3 CCR 718-1
DEPARTMENT OF REGULATORY AGENCIES PASSENGER TRAMWAYS 3 CCR 718-1 [Editor’s Notes follow the text of the rules at the end of this CCR Document.] _______________________________________________________________________________ Rule 0.1 Preamble and incorporation by reference.
Section 25-5-704(1)(a) of the Colorado Revised Statutes allows the Colorado Passenger Tramway Safety Board (“Board”) to “use as general guidelines the standards contained in the 'American Standard Safety Code for Aerial Passenger Tramways', as adopted by the American Standards Association, Incorporated, as amended from time to time.” Since 1965, when this provision was enacted, the American Standards Association, Inc., has been succeeded by the American National Standards Institute, Inc. and the American Standard Safety Code updated. The relevant publications are now known as the “American National Standard for Passenger Ropeways – Aerial Tramways, Aerial Lifts, Surface Lifts, Tows and Conveyors – Safety Requirements” (“ANSI B77.1-2011”) and the “American National Standard for Funiculars – Safety Requirements” (“ANSI B77.2-2004”).
The Board adopts and incorporates by reference, with certain additions, revisions, and deletions, the ANSI standards as listed below:
B77.1-1960 June 8, 1960 USA standard Safety Code for Aerial Passenger Tramways B77.1a-1963 July 1, 1963 Addenda to USA standard Safety Code for Aerial Passenger Tramways B77.1b-1965 July 26, 1965 Addenda to USA standard Safety Code for Aerial Passenger Tramways B77.1-1970 March 17, 1970 American National Standard - Safety Requirements for Aerial Passenger Tramways B77.1-1973 January 25, 1973 American National Standard - Safety Requirements for Aerial Passenger Tramways B77.1-1976 November 19, 1975 American National Standard - Safety Requirements for Aerial Passenger Tramways B77.1a-1978 January 17, 1978 Addendum to American National Standard - Safety Requirements for Aerial Passenger Tramways B77.1-1982 July 16, 1982 American National Standard - for passenger tramways - aerial tramways and lifts, surface lifts and tows – Safety Requirements B77.1a-1986 December 2, 1985 Supplement to American National Standard - for passenger tramways - aerial tramways and lifts, surface lifts and tows - Safety Requirements B77.1b-1988 March 14, 1988 Supplement to American National Standard - for passenger tramways - aerial tramways and lifts, surface lifts and tows – Safety Requirements B77.1-1990 March 26, 1990 American National Standard for Passenger Tramways - Aerial Tramways and Lifts, Surface Lifts and Tows - Safety Requirements B77.1-1992 December 2, 1992 American National Standard for Passenger Tramways - Aerial Tramways, Aerial Lifts, Surface Lifts, Tows - Safety Requirements B77.1-1999 March 11, 1999 American National Standard for Passenger Ropeways - Aerial Tramways, Aerial Lifts, Surface Lifts, Tows and Conveyors - Safety Requirements B77.2-2004 December 31, 2003 American National Standard for Funiculars- Safety Requirements Aerial Tramways, Aerial Lifts, Surface Lifts, Tows and Conveyors - Safety Requirements B77.1-2006 April 17, 2006 American National Standard for Passenger Ropeways - Aerial Tramways, Aerial Lifts, Surface Lifts, Tows and Conveyors - Safety Requirements B77.1-2011 May 2, 2011 American National Standard for Passenger Ropeways - Aerial Tramways, Aerial Lifts, Surface Lifts, Tows and Conveyors - Safety Requirements As used in this document, the term “rules and regulations” means the referenced ANSI Standards and the “State of Colorado Department of Regulatory Agencies Passenger Tramway Safety Board Rules and Regulations.” The Board Rules and Regulations do not include any later amendments to or editions of the standards listed above.
A copy of each of the standards, codes, and guidelines listed above are available for public inspection at the Board office at the Division of Professions and Occupations, Department of Regulatory Agencies, 1560 Broadway, Suite 1350, Denver, Colorado, 80202, and at any state publications depository library. For further information regarding how this material can be obtained or examined, contact the Board's Program Director at 1560 Broadway, Suite 1350, Denver, Colorado, 80202, (303) 894-7785. Section 1 General Requirements
1.1 Scope.
These rules and regulations are promulgated by the Colorado Passenger Tramway Safety Board pursuant to the authority conferred by C.R.S. 25-5-701 et. seq., as amended.
1.2 Purpose.
Strict application of the provisions of this standard may not be appropriate in every instance. Wherever it may be proposed to depart from the provisions of this standard, the authority having jurisdiction may grant exceptions from the literal requirements or permit the use of other devices or methods that provide features comparable to those included in this standard, providing that after receiving such evidence as the Board may require, the Board determines that:
1.2.4.1 Existing installations.
Existing tramways, when reinstalled, shall be classified as new installations (see 1.2.4.2). For tramways that have not been relocated, but have not had routine maintenance performed within the previous two years or longer, these tramways shall be subject to an acceptance test as outlined in 2.1.1.11, 3.1.1.11, 4.1.1.11, 5.1.1.11, 6.1.1.11, 7.1.1.11 (ANSI B77.1) and 2.1.1.11 (ANSI B77.2) Acceptance Test. This test and inspection shall verify that the tramway is in compliance with the rules and regulations that were in effect at the time the tramway was originally constructed and current rules that affect all tramways. A tramway modification or alteration shall be defined by 21.1 and meet the requirements of 21.3, 21.4, and 21.5.
If an ANSI B77.1 or CPTSB rule was in existence at the time of the ropeway installation date or modification date of an existing tramway and is absent from the current CPTSB rules and regulations, it shall continue to be required.
1.2.4.2 New Installations.
New installations which have not received their initial registration by the effective date of these rules and regulations shall meet the requirements in effect at the time of initial registration.
1.2.4.3 Major Tramway Modification.
A major Tramway modification shall be defined as an alteration of the current design of the Tramway which results in:
1.2.5 Interpretation of Rules and Regulations.
Additional explanation or interpretation of these rules and regulations shall be the responsibility and at the reasonable discretion of the Board. An appeal to the ruling of the Board may be made in conformance with C.R.S. 24-4-106.
1.2.6 Existing Laws or Ordinances.
This standard shall be considered as supplementary to any existing law or ordinance covering the installation or operation of these facilities. All construction shall be in accordance with applicable codes of the state or its political subdivisions and the codes and standards of the industry.
1.4 Definitions.
Qualified Engineer: An engineer who is licensed as a Professional Engineer in the State of Colorado.
Qualified Software Programmer: A qualified software programmer is a person who, by his/her knowledge, experience, and training in the field of software programming and ropeways, or authorized by the ropeway manufacturer, is capable of developing and changing the software logic to operate the protection, operational and supervision circuits for the aerial ropeway. The software programmer is expected to be familiar with the current CPTSB and ANSI standards. safety gate: See Stop Gate.
stop gate: A stop gate is a type of automatic stopping device that, when actuated by a passenger's weight, contact, or passage, will automatically stop the tramway. For the purposes of complying with these rules and regulations, stop gate and safety gate shall be considered to have the same meaning.
1.5 Quality assurance program.
Written Quality Assurance (QA) programs shall be developed and utilized to ensure the integrity of the design, manufacture, installation, operation, and maintenance of passenger ropeways. The objective of these QA programs is to assure that passenger ropeways meet the applicable requirements of this standard.
The designer's QA program for new, modified, or relocated ropeways shall include verification and documentation of the design criteria. This program shall include calculations, analysis, and checking procedures.
For relocated ropeways the designer of the relocation shall be responsible for the establishment of the QA program for that installation. The designer shall describe what QA methods were used for the various components of the relocated ropeway. These methods may include sampling procedures, nondestructive testing, and prior satisfactory “in use” service.
The ropeway manufacturer's QA program for ropeways shall include verification and documentation that manufactured parts conform to the design criteria. For relocated ropeways, this requirement is for newly manufactured parts only.
For new or modified ropeways, a qualified engineer shall certify to the owner that the construction and installation has been completed in accordance with the final design criteria for such work. The installer's QA program for all new or modified ropeways, including rope tows, shall include verification and documentation that the ropeways installation conforms to the design criteria.
The owner's QA program for all ropeways shall include verification and documentation that the ropeway is operated and maintained in accordance with the design criteria, including the performance of in-use periodic testing by qualified personnel. Section 2 Aerial Tramways Note: Timeframes relate to the ropeway installation date or modification date whichever controls, unless otherwise noted.
2.1.1.3.1 Location of power lines. Power lines shall be located a minimum distance equal to the height of poles or support structures from any passenger tramway so that poles and electrical lines cannot touch any portion of the tramway, loading or unloading points or platforms and tow path, if applicable, upon collapse of poles or lines, unless suitable and approved precautions are taken to safeguard human lives.
2.1.1.3.2 Air space requirements.
No passenger tramway installation shall be permitted to operate when a structure encroaches into the air space of the passenger tramway, defined as the area bounded by vertical planes commencing at a point thirty-five (35) feet from the intersection of the vertical planes of the ropes or cables and ground surface.
For purposes of this rule, buildings controlled by the licensee used primarily for maintenance and operation of the lift and other tramways shall not be considered structures; however, buildings must comply with the following.
Note: Timeframes stated for this rule define the air space requirements for each ropeway at the time when the encroachment was known to the area and DO NOT pertain to the installation date of the ropeway.
Any cable or rope installed on or near a ropeway that may represent a hazard to the ropeway shall be monitored to automatically stop the ropeway if the cable or rope fails. Failure would be defined as per Section 23.1 (g).
2.1.1.11.2 Acceptance tests.
Before an aerial tramway that is new or relocated or that has not been operated for routine maintenance within the previous 2 years is opened to the public, it shall be given thorough tests by qualified personnel to verify compliance with the plans and specifications of the designer. The designer or manufacturer shall propose and submit an acceptance test procedure.
Thorough load and operating tests shall be performed under full loading and any partial loadings that may provide the most adverse operating conditions. Test load per carrier shall be 110% of the design live load. The functioning of all manual and automatic stops, limit switches, deropement switches, and communications shall be checked. Acceleration and deceleration rates shall be confirmed under all loadings (see 2.1.2.4, 2.1.2.5). Motive power and all braking devices (see 2.1.2.6) shall be proved adequate under the most adverse loading conditions.
A plot of rope speed versus time shall be recorded for stops that the manufacturer or Qualified Engineer has designated in the acceptance test procedure. As a minimum, the plot shall show the rope speed every 0.2seconds from the initiation of the stop to when the rope is stopped. The final brake system settings and brake force test values shall be documented in the acceptance test results (see also 2.1.2.6).
Any changes to software logic that would affect a Protection or Operation Circuit after the start of initial testing shall result in a restart of testing to ensure software logic changes have not affected those systems already tested. Retesting for changes in software parameters shall be at the discretion of the Authorities Having Jurisdiction (AHJ).
2.1.1.12 Safety of operating and maintenance personnel.
Provision shall be incorporated in the aerial tramway design to render the system inoperable when necessary for the protection of personnel working on the aerial tramway. See 2.3.1.1 for placement of applicable warning signs.
The aerial tramway shall incorporate an audible warning device that signals of an impending start of the ropeway. After the start button is pressed, the device shall sound an audible alarm for a minimum of 2 seconds and shall continue until the ropeway begins to move. The audible device shall be heard inside and outside all terminals and machine rooms above the ambient noise level.
2.1.2.1.1 Auxiliary power unit.
An auxiliary power unit (APU) with an independent power source shall be provided to move the carrier(s) to a terminal in the event of failure of the primary power unit. A single auxiliary power unit shall not be used except to unload passengers and for maintenance purposes. This unit shall be electrically wired to meet the requirements of 2.2.1.7.2 so that it can be stopped by the Emergency Shutdown Circuit. The auxiliary power unit shall not depend upon the mechanical integrity of the prime mover to drive the unit. The prime mover shall be disconnectable in event of a mechanical lockup.
The auxiliary power unit shall be designed to become operational and move the carriers to terminal areas within 1 hour from the time of initiating its connection.
2.1.2.5 Brakes.
The aerial tramways shall have the following friction-type brakes: - service brake (see 2.1.2.5.1);
All drive braking systems shall be designed and monitored to ensure that:
Deceleration rates specified in 2.1.2.4 shall be achieved by each brake without the aid of other braking devices or drive regeneration.
All drive braking systems shall be capable of operation to comply with the daily inspections and periodic testing.
A qualified engineer shall furnish a written procedure to be followed and specify the auxiliary equipment necessary for periodic testing and adjustment of the holding force of each brake. This procedure shall be performed during the acceptance test, and at the frequency specified, to demonstrate the ability of each brake to produce the required torque.
Such testing shall be accomplished as part of normal maintenance during the operating season, but shall be performed when the aerial tramway is not open to the public.
Drive sheave brake controls shall be located and the brake activated in a manner that deceleration will begin within 3 seconds after the operator or attendant reacts to the stimulus to apply the brake.
The drive sheave brake shall operate on the drive sheave assembly. Application of the drive sheave brake shall automatically disconnect the power source to the power unit in use. This brake shall act automatically when the speed of the haul rope exceeds the design speed by 15% in either direction or if the carriers travel beyond their normal stopping position in either terminal.
The drive sheave brake shall be an automatic brake to stop and hold the aerial tramway under the most unfavorable design loading condition. The rate of application of this brake shall be adjustable. This brake shall have the design capability to decelerate the aerial tramway operating at full speed, with the design loading condition most unfavorable to stopping, at 1.5 feet (0.5 meter) per second squared and within the parameters specified in 2.1.2.4.
Moving machine parts that normally may be in reach of personnel shall be fitted with guards conforming to American National Standard Safety standard for mechanical power transmission apparatus, ANSI/ASME B15.1-1992.
Protection against static electricity shall be provided. Fire-fighting device(s) shall be available.
2.1.2.11 Manual and automatic control devices.
All control devices and switches shall conform to the requirements of 2.2.1.7.
The following automatic stop devices or systems shall be installed:
2.1.3.3.2 Sheave and sheave unit design.
Sheave flanges shall be as deep as possible, considering other features of the system. At the same time, rope attachments shall be designed in relation to the sheave groove so as not to contact sheave flanges during normal operations, taking into consideration the anticipated amount of wear of the sheave liner groove. Attachments shall be allowed to contact sheave flanges adjacent to the haul rope when the carrier swings, provided that this is considered in the design of the attachments and sheaves. Furthermore, rope attachments, sheave flanges, and hanger guides shall be designed so that hangers cannot be caught behind guides, and so that ropes and attachments cannot be deroped from sheaves if the carrier is swinging within design limits as it approaches or passes the tower. Suitable guards, of sufficient strength to resist the lateral forces caused by an inside deropement, shall be installed.
Construction of the entire sheave unit shall be such that the rope cannot become entangled in the sheave unit in the event the rope leaves the sheave toward the outside. On each sheave unit, rope-catching devices shall be installed to reduce the risk of the rope moving excessively in the direction of the load on the sheave unit in the event of deropement. These devices shall be located less than one-half the diameter of the sheaves from the normal operating position of the rope and shall extend a minimum of two rope diameters beyond the sheave flange. They shall be designed to permit the passage of the rope and attachments after deropement. On each sheave unit, suitable devices shall be installed and maintained that will stop the aerial tramway in case of deropement (see 2.1.2.11.2(h)).
If the gage of the haul rope system is varied at any point along the line, the horizontal departure at any one tower shall be provided for in the design so that deropement cannot occur by virtue of such a departure.
Sheave mounts or mounting frames shall be designed to be adjustable, allowing the sheave units to be aligned and held in the plane of the rope.
See also 2.1.1.4 through 2.1.1.4.7 for the effect of tower height and location on sheave units.
2.1.5 Provisions for operating personnel.
Operator and attendant stations shall be located to provide visual surveillance of the station and the line in the vicinity of the station or in a cabin. When enclosed, they shall be heated, ventilated, and lighted as required to perform the function of the station. They shall contain, inside the station when enclosed:
This does not preclude additional communications and controls located outside the enclosed station. All enclosed stations shall be locked to prevent unauthorized entry when unattended. The operator shall be located where he/she can observe the aerial tramway in operation and may be located in a cabin. The physical appearance, operation, and location of emergency shutdown devices shall differentiate them from other operating devices or controls. The operator’s controls and communicating devices shall be within reach without leaving his/her position.
2.1.6.1 Operational manual.
The designer of each new or reinstalled aerial tramway shall prepare an operational manual for use with each installation. The manual shall describe the function and operation of the components and provide instructions for the correct usage of the installation.
2.2.1.3 Protection.
All transformer stations and other high voltage electrical equipment shall be marked with conspicuous warning signs and shall be protected so as to prevent unauthorized persons from entering the area or coming in contact with any portion of the equipment or wiring. All power equipment shall be protected against overloads by circuit breakers or fuses.
2.2.1.4 Voltage limitations for overhead circuits.
Signal, communication, and control circuits may be supported between towers that support the aerial tramway. Voltage on overhead or exposed circuits shall be limited to 50 volts with the exception of the intermittent ring-down circuits for telephone systems.
2.2.1.7 Operating control circuits.
Operating circuits shall not have anything across or parallel with the contacts of switches, relays, or automatic stopping devices (including solid state devices monitoring the circuits or devices), unless it can be shown that any failure mode of the device placed across the contacts does not defeat the purpose of the operating circuit devices.
All start/run/stop and speed control switches shall be conspicuously and permanently marked with the proper function.
All automatic and manual stop and shutdown devices shall be of the manually reset type. An exception to this requirement is allowed for magnetic or optically operated automatic stop devices, if the operating circuit is such that it indicates that such devices initiated the stop and the circuit is of the manually reset type.
Manual stop switches (push button) shall be positively opened mechanically and their opening shall not be dependent upon springs.
All aerial tramway systems shall include a normally de-energized circuit that, when energized, allows the system to run and when interrupted, effects a shutdown (see 1.4.22). The shutdown shall have priority over all other control stops or commands. If, for any reason, the operator has lost control of the aerial tramway while using the operating control circuitry, the controls shall include an emergency shutdown circuit allowing the operator/attendant to stop the aerial tramway. Any one of the following conditions is considered a loss of control of an aerial tramway:
The shutdown circuit shall not have anything across or parallel with the contacts of switches, relays, or other devices in this circuit, but can have such devices as solid state monitoring devices and microprocessors in series with the manual shutdown device and main control contactor (main control disconnect coil).
This circuit shall include a manual shutdown device at each station and in the machine room. The shutdown device shall be conspicuously and permanently marked and shall be red in color (see 2.1.5).
A temporary bypass circuit may be installed for malfunctions in operating control circuitry (see 2.3.2.5.9).
2.2.9 Manual control devices
All automatic and manual stop and shutdown devices shall be of the manually reset type. An exception to this requirement is allowed for magnetic or optically operated automatic stop devices, if the operating circuit is such that it indicates that such devices initiated the stop and the circuit is of the manually reset type.
Manual stop switches (push button) shall be positively opened mechanically and their opening shall not be dependent upon springs.
Manual control devices shall be installed at all conductor and operator work positions, control rooms, machine rooms, and out-of-doors in proximity to all loading and unloading areas. As a minimum, each operator and conductor work position shall include an emergency shutdown device and a Normal Stop device. All manual control devices located in or on a control cabinet shall be mounted so that they are in the same plane or face of the cabinet. All control devices shall be conspicuously and permanently marked with the proper function and color code.
2.2.12 Software security.
The “as built” documents shall include a procedure, developed by the aerial lift manufacturer or a Qualified Engineer, to ensure the security of the software logic and operating parameters that will control the aerial lift. Upon completion of the acceptance testing this procedure shall be implemented in a manner that will prevent unauthorized personnel from making changes to the software logic or operating parameters. All programmable logic and parameters shall be documented. Software programming and changes to the software logic shall be made by a qualified software programmer. Software programmers shall provide documents that include:
2.3.1.3 Operational plan for transportation of recreational equipment. Each licensee shall have an operational plan that has procedures for transportation of sports equipment and recreational devices by foot passengers. This plan shall be consistent with the tramway manufacturer's specifications and instructions, if any.
2.3.2.5 Operational requirements
Each licensee shall have an operational plan that identifies criteria for pre-operational tramway inspections for the transportation of personnel on aerial ropeways. Implementation of these procedures is intended for the protection of all personnel and shall be the responsibility of the area operator, supervisor, and the authorized individual. The preoperational plan shall include, but not be limited to: Minimum Requirements Prior to the daily preoperational ride and the completion of X.3.2.4.2 Daily preoperational inspection, or any initial start-up of the ropeway, the following minimum steps shall be taken;
Following procedural clearances, the aerial lift shall be started by the operator or at the direction of the operator.
After any stop of an aerial lift, the operator shall determine the cause of the stop, and not restart until clearance has been obtained from all attended stations.
Procedures shall be established for terminating daily operations in such a manner that passengers will not be left on the aerial lift after it has been shut down. Loading ramps, as required, shall be closed and so marked.
When either loading or unloading portions of an intermediate station are not in operation, it shall be so signed and the loading station shall be closed to public access.
Should any carrier become damaged or otherwise rendered unfit for passenger transportation during normal operation, it shall be clearly and distinctively marked and not used for passengers until repaired or replaced. It shall be removed from the line as soon as feasible.
When wind or icing conditions are such that operation is hazardous to passengers or equipment, according to predetermined criteria based upon the area’s operational experience and the designer’s design considerations, the aerial lift shall be unloaded and the operation discontinued. If necessary under the predetermined criteria, device(s) shall be installed at appropriate location(s) to ascertain wind velocity and direction when aerial lifts are operated. No aerial lift shall operate when there is an electrical storm in the immediate vicinity. Should such conditions develop while the aerial lift is in operation, loading of passengers shall be terminated, and operation shall be continued only as long as necessary to unload all passengers. When such shutdown has been caused by an electrical storm, grounding of control circuits and haul ropes that are used as conductors in communication systems is permissible. Such grounding shall be removed prior to resumption of passenger operations.
The use of temporary circuits that have been installed for the purpose of bypassing failed electrical circuit(s) (see 2.2.6) shall meet these requirements in the following order:
A plan for evacuation of passengers from each aerial lift shall be developed and documented. The plan shall include:
All nonmetallic rope used for evacuation shall be of nylon or polyester (Dacron) fiber of either laid or braided construction. Laid rope of nylon shall be of a hard lay. These ropes shall be either of a static rescue type or a dynamic mountaineering type. Breaking strength, when new, shall be at least 15 times the maximum expected operating load but in no case less than 4000 pounds (17.8 kilonewtons). No natural fiber or polypropylene ropes shall be used. These ropes shall be carefully stored when not in use and shall be examined after each completed aerial lift evacuation and prior to each season of operation, both summer and winter, to ascertain that they are in satisfactory condition.
Carabiners, if used, shall be of the locking type.
2.3.5.5 Software parameter log.
A software parameters log shall be maintained for each aerial lift. This log is intended for changes in software parameters that can be altered which affect the supervision circuit. The log shall include, but not be limited to:
Section 3 Detachable grip aerial lifts Note: Timeframes relate to the ropeway installation date or modification date whichever controls, unless otherwise noted.
3.1.1.3.1 Location of power lines.
3.1.1.3.2 Air space requirements.
May 15, 2000 to Present:
No passenger tramway installation shall be permitted to operate when a structure encroaches into the air space of the passenger tramway, defined as the area bounded by vertical planes commencing at a point thirty-five (35) feet from the intersection of the vertical planes of the ropes or cables and ground surface.
For purposes of this rule, buildings controlled by the licensee used primarily for maintenance and operation of the lift and other tramways shall not be considered structures; however, buildings must comply with the following.
No passenger tramway installation shall be permitted to operate when a structure encroaches into the air space of the passenger tramway, defined as the area bounded by planes having an outward slope of one horizontal and two vertical and commencing at a point twenty (20) feet horizontally outside of the intersection of the vertical planes of ropes or cables and ground surface Dec. 30, 1977 to Jan. 1, 1994:
No passenger tramway installation shall be permitted whenever the Passenger Tramway Operator does not have permanent and irrevocable control of the following air space (except when the passenger tramway is located on Forest Service land): the area bounded by planes having an outward slope of one horizontal and two vertical and commencing at a point twenty (20) feet horizontally outside of the intersection of the vertical planes of ropes or cables and ground surface Prior to Dec. 30, 1977:
None required
Note: Timeframes stated for this rule define the air space requirements for each ropeway at the time when the encroachment was known to the area and DO NOT pertain to the installation date of the ropeway.
May 15, 2000 to Present:
Any cable or rope installed on or near a ropeway that may represent a hazard to the ropeway shall be monitored to automatically stop the ropeway if the cable or rope fails. Failure would be defined as per Section 23.1 (g).
Not required
3.1.1.5.2 Clearances.
The minimum distance between passing carriers, each swung 10 degrees inward from the vertical, shall be the greater of the following:
The distance between haul ropes, (or track cables), for the purpose of these checks, shall be considered as equal to the gauge of the line.
External structures, posts, or obstructions, other than lift structural components, shall have at least 4 feet (1.22 meters) of clearance from either edge of a loaded open carrier passenger seat or open cabin body (measured from the outermost attachments on or parts of the carrier while the carrier is hanging in a vertical position).
Prior to Jan. 1, 1984:
Terminals and towers shall be designed and installed to provide the clearances as herein specified and to minimize surge of the line under operating conditions. Local wind conditions shall be taken into consideration.
The minimum distance between passing carriers, each swung 10 degrees inward from the vertical, shall be the greater of the following:
The distance between haul ropes, (or track cables), for the purpose of these checks, shall be considered as equal to the gauge of the line.
3.1.1.5.3 Terminal clearances.
3.1.1.11.2 Acceptance tests.
Before an aerial lift that is new or relocated or that has not been operated for routine maintenance within the previous 2 years is opened to the public, it shall be given thorough tests by qualified personnel to verify compliance with the plans and specifications of the designer. The designer or manufacturer shall propose and submit an acceptance test procedure.
Thorough load and operating tests shall be performed under full loading and any partial loadings that may provide the most adverse operating conditions. Test load per carrier shall be 110% of the design live load. The functioning of all push-button stops, stop cords, automatic stops, limit switches, deropement switches, and communications shall be checked. Acceleration and deceleration rates shall be confirmed under all loadings (see 3.1.2.4, 3.1.2.5). Motive power and all braking and rollback devices (see 3.1.2.6) shall be proved adequate under the most adverse loadings. On systems operating at 600 feet per minute (3 meters per second) or greater, a plot of rope speed versus time shall be recorded for stops that the manufacturer or Qualified Engineer has designated in the acceptance test procedure. As a minimum, the plot shall show the rope speed every 0.2 seconds from the initiation of the stop to when the rope is stopped. The final brake system settings and brake test values shall be documented in the acceptance test results.
Any changes to software logic that would affect a Protection or Operation Circuit after the start of initial testing shall result in a restart of testing to ensure software logic changes have not affected those systems already tested. Retesting for changes in software parameters shall be at the discretion of the Authorities Having Jurisdiction (AHJ).
3.1.2.1.3 Power unit interlock.
3.1.2.5 Stops and shutdowns.
For all stops, the minimum average rate of the carrier’s horizontal deceleration shall be adequate to prevent carrier collision in the receiving and launching mechanisms. The maximum rate of the rope deceleration shall be 5 feet per second squared (1.52 meters per second squared). These measurements shall be measured over any one second interval under any operating condition while the carrier is attached to the haul rope and referenced to the rope speed at the drive terminal.
Normal stop: (see 1.4 – normal stop). If a service brake is required (see table 3-1), it shall have been applied by the time the aerial lift comes to a stop.
Emergency shutdown: (see 1.4 – emergency shutdown) The drive sheave brake shall be applied. The service brake, if installed, shall have been applied by the time the aerial lift comes to a stop. The designer shall designate which control functions of the ropeway system shall initiate an emergency shutdown. The designer may define other stopping modes other than normal and emergency shutdown. For other stopping modes, the designer shall specify the method of stopping, including the type and timing of brake(s) that may be applied, and the stopping criteria. Table 3-1 Required Stopping Devices Aerial lift category Service Drive Rollback Retarding Brake sheave device device brake (see 3.1.2.4)
Self braking: A lift that decelerates, stops & Required* Required Not Required Not Required remains stopped within the service brake performance requirements without a braking device Non-overhauling: A lift that will not accelerate Required Required Not Required Not Required in either direction when it is not driven, but is not self-braking Overhauling reverse direction: A lift that will Required* Required Required Not Required accelerate in the reverse direction when it is not driven Overhauling forward: A lift that will accelerate Required Required Not Required Required in the forward direction when it is not driven * A service brake is not required if the overhauling, reverse direction aerial lift will meet the service brake stopping requirements under the most unfavorable design loading conditions
3.1.2.6 Brakes and rollback devices.
May 15, 2006 to Present:
The aerial lift shall have the following friction-type brakes and other devices as specified in table 3-1: - service brake (see 3.1.2.6.1);
All braking systems shall be designed and monitored to ensure that:
The service brake, drive sheave brake, and rollback device shall be designed such that failure of one braking system will not impair the function of the other systems. All brakes shall have the braking force applied by springs, weights, or other approved forms of stored energy. The service brake, drive sheave brake, and rollback device shall be designed to assure operation under all anticipated conditions.
Each braking system shall be capable of operation to comply with daily inspections and periodic testing. The manufacturer or a Qualified Engineer shall furnish a written procedure to be followed and specify the auxiliary equipment necessary for periodic testing and adjustment of the holding force of each brake, rollback, and backstop device. The procedure shall additionally specify:
If a device is permanently installed to cause a brake, or rollback device, to be disabled for testing or reverse rotation, it shall be electronically monitored so that the aerial lift cannot be operated in its normal mode when the brake is so disabled.
Prior to May 15, 2006:
The aerial lift shall have the following friction-type brakes and other devices as specified in table 3-1: - service brake (see 3.1.2.6.1);
All braking systems shall be designed and monitored to ensure that:
The service brake, drive sheave brake, and rollback device shall be designed such that failure of one braking system will not impair the function of the other systems, and all brakes shall have the braking force applied by springs, weights, or other approved forms of stored energy. The service brake, drive sheave brake, and rollback device shall be designed to assure operation under all anticipated conditions.
Deceleration rates specified in 3.1.2.4 shall be achieved by each brake without the aid of other braking devices or drive regeneration.
Each braking system shall be capable of operation to comply with daily inspections and periodic testing. A Qualified Engineer shall furnish a written procedure to be followed and specify the auxiliary equipment necessary for periodic testing and adjustment of the holding force of each brake, rollback, and backstop device. This procedure shall be performed during the acceptance test, and then at the frequency specified, to demonstrate the ability of each brake to produce the required torque. Such testing shall be accomplished as part of normal maintenance during the operating season, but shall be performed when the aerial lift is not open to the public. If a device is permanently installed to cause a brake, or rollback device, to be disabled for testing or reverse rotation, it shall be electronically monitored so that the aerial lift cannot be operated in its normal mode when the brake is so disabled.
The drive sheave brake shall operate on the drive sheave assembly. The drive sheave brake shall be an automatic brake to stop and hold the aerial lift under the most unfavorable design loading condition. Deceleration rates specified in 3.1.2.5 shall be achieved by the drive sheave brake without the aid of other braking devices or drive regeneration. Application of the drive sheave brake shall automatically disconnect the power source to the power unit in use. This brake shall act automatically when the speed of the haul rope exceeds the design value by 15% in either direction.
The rollback device shall act directly on the drive sheave assembly or on the haul rope. Under the most unfavorable design loading condition, the rollback device shall automatically control reverse rotation of the aerial lift, as defined herein. The rollback device shall bring the aerial lift to a stop if unintentional reverse rotation occurs. The rollback device shall be activated if the haul rope travels in excess of 36 inches (915 mm) in the reverse direction (see 3.2.3.7 for electrical requirements).
A drive train backstop device may be installed on an aerial lift. If used, it shall conform to the following requirements:
The acceleration/deceleration areas, conveyor areas, and associated access ways shall be well ventilated. These areas shall have a permanently installed lighting system which is adequate for proper machinery maintenance and safety of personnel. Access ways shall be provided for inspection and proper maintenance while the equipment is in operation. Access ways shall have:
Prior to Jan 1, 1988:
Not required.
3.1.2.7.5 Egress.
Jan. 1, 1994 to Present:
Permanent stairs and walkways shall be provided for egress from all machinery areas. The maximum angle of inclination for the stairs shall not exceed 70 degrees. Stairs and walkways shall have a minimum width of 18 inches. Stair treads shall have a minimum depth of 4 inches. Walkway surfaces and stair treads shall be constructed of non-skid bar grating or expanded metal. Handrails shall be provided. Prior to Jan 1, 1994:
Not required.
3.1.2.8.2 Hall rope terminal sheaves (Bullwheel and deflection sheaves):
Haul rope terminal sheave frames shall be designed to retain the rope in the event of the failure of the sheave, shaft, or mounting. In instances where the sheave is cantilevered, the design working stresses shall not be more than 60% of those otherwise allowable. The minimum diameter of terminal sheaves shall be 72 times the nominal diameter of the haul rope. The sheave assembly shall be designed to retain the haul rope in the event of a deropement from the sheave. A flange extension of 1-½ times the rope diameter (measured from the bottom of the rope groove) shall be deemed adequate for retention.
Haul rope terminal sheaves that act as driving, braking, or holding sheaves shall be so designed tht the haul rope does not slip in the sheave groove. The design coefficient of friction for a particular sheave liner shall not exceed the following values:
Sheave Liner Coefficient of Friction Steel or cast iron grooves 0.070 Leather 0.150 Rubber, neoprene, or other 0.205
3.1.2.10 Tension systems.
Prior to May 15, 2006:
Counterweights, hydraulic and pneumatic cylinders, or other suitable devices shall be used to provide the tensioning requirements of the particular installation. All devices used to provide the tension shall have sufficient travel to adjust to all normal operating changes in loading and temperature. The tension for haul ropes and track cables for all modes of operation shall be determined by the design engineer. Tension systems may be automatic or manual; however, all systems shall have monitoring equipment that will automatically prevent operation outside of design limits (see 3.1.2.11.2(c)). Tension systems may be adjustable to provide proper tensions for different modes of aerial lift operation. The tension system design shall consider changes, for each mode of operation, in tensions due to rope elongation, friction, and other forces affecting traction on driving, braking, or holding sheaves, tower and sheave loading, and maximum vertical loads on grips to assure that tensions remain within design limits.
If the system fails to provide the design operating pressure, the aerial lift shall be able to be operated to unload passengers.
Cylinders and their attachments shall each have a minimum factor of safety of 5. The factor of safety is equal to the ultimate tensile strength of the cylinder divided by the maximum steady state design tension.
The systems providing operating pressure for the cylinder shall have a minimum factor of safety of 5 unless a high velocity check valve or flow control device is used where the pressure line is connected to the cylinder. The check valve shall be rated to hold twice the normal operating pressure. The remainder of the system shall not exceed the manufacturer’s published working pressure. Provisions shall be made to restrict the movement of pressure lines or hoses should they become severed under pressure. When pneumatic storage cylinders, accumulators, or other similar devices are used, they shall be located so that they cannot be knocked over or damaged.
Counterweights, when used, shall be arranged to move freely up and down. Enclosures for counterweights shall be provided where necessary to prevent snow, ice, water, and other materials from accumulating under and around the counterweights and interfering with their free movement. Visual access shall be provided to areas beneath and above all counterweights contained in enclosures or pits. When a counterweight is contained in a structural frame, guides shall be provided to protect the frame and to ensure free movement of the counterweight. Where snow enclosures are not required, guardrails or enclosures shall be provided to prevent unauthorized persons from coming in contact with or passing under counterweights.
Wire ropes in tension systems shall have a minimum factor of safety of 6 when new (see 7.1.3.1). On arrangements involving rope reeving, the maximum design static tension with sheave friction taken into account shall be the basis for determining the factor of safety. See 7.3 for additional requirements. No rotation-resistant ropes shall be used in tension systems (see 1.4 B rotation- resistant rope).
Wire ropes in tension systems shall be adjusted so that the counterweight will reach the end of its travel before the attached tension sheave carriage comes within 6 inches (150 mm) of the end of its travel. When wire ropes are used with pneumatic or hydraulic cylinders, they shall be adjusted so that connecting devices will not contact the reeving devices before the ram reaches the travel limits of the cylinder.
Roller, leaf, or welded link chains may be used in tension systems (see section 7). For chain used as a tensioning component, where the chain does not pass through or around sprockets, the minimum factor of safety shall be 5 (see 7.1.3.3). For applications of chain where any sprockets are used, the minimum factor of safety shall be 6.
Winches or other mechanical devices that are used for take-up and remain part of the system shall have a minimum factor of safety of 6 against their ultimate capacity. They shall have a positive lock against release. Where this factor cannot be established by the manufacturer’s endorsement, a device shall be installed on the tension system rope or chain ahead of the winch/mechanical device that will keep the tension system intact in the event of a failure or release of the device.
The diameter of the winding drum shall not be less than the specified minimum sheave diameters referenced as Condition C in 3.1.2.7.3 for rope.
3.1.3.1 Towers.
Prior to Nov. 1, 1991:
The design of the tower structure and foundation shall be in accordance with the requirements of 3.1.1.6. Where guyed towers are used and guys intersect the ground within or near ski runs, the guys shall be marked for visibility.
Means shall be provided for ready access from the ground to all tower tops. Permanent ladders are required for heights above those accessible by portable ladders. Portable ladders, if used, shall be in at least sufficient quantity to be available at each point where attendants are positioned. Portable ladders extending more than 20 feet (6.10 meters) shall not be used. Towers shall be identified with successive numbers clearly visible to passengers. Where towers are designed to permit variations in rope height, sheave unit supports shall be guided and attached so as to prevent misalignment by rotation
3.1.3.3.2 Sheave and sheave unit design
May 15, 1994 to May 15, 2006:
Sheave flanges shall be as deep as possible, considering other features of the system. At the same time, rope grips shall be designed in relation to the sheave groove so as not to contact sheave flanges during normal operations, taking into consideration the anticipated amount of wear of the sheave liner groove. Grips shall be allowed to contact sheave flanges adjacent to the haul rope when the carrier swings, provided that this is considered in the design of the grips and sheaves. Furthermore, rope grips, sheave flanges, and hanger guides shall be designed so that hangers cannot be caught behind guides, and so that haul ropes and grips cannot be deroped from sheaves if the carrier is swinging within design limits as it approaches or passes the tower.
Suitable guards, of sufficient strength to resist the lateral forces caused by an inside deropement, shall be installed.
Construction of the entire sheave unit shall be such that the haul rope cannot become entangled in the sheave unit in the event the rope leaves the sheave toward the outside. On each sheave unit, rope-catching devices shall be installed to reduce the risk of the haul rope moving excessively in the direction of the load on the sheave unit in the event of deropement. These devices shall be located less than one-half the diameter of the sheaves from the normal operating position of the rope and shall extend a minimum of two rope diameters beyond the sheave flange. Alternatively, when the catcher is located so that the rope cannot move in the direction of the load when it passes from the edge of the sheave to a position in the catcher, the catcher shall extend a minimum of two rope diameters beyond the center of the rope when the rope has reached the point where the deropement switch device initiates a stop. Rope-catching devices shall be designed to permit the passage of the haul rope and grips after deropement. The catcher shall be independent from the sheave. On each sheave unit, suitable deropement switch devices shall be installed and maintained that will stop the lift in case of deropement.
On lifts where the carrier speed exceeds 600 feet per minute (3.0 meters per second), at least one device that senses the position of the rope shall be installed on each sheave unit. The device shall initiate a stop before the rope leaves the sheave in the horizontal direction or when the rope is displaced in the vertical direction by one rope diameter plus the distance that the rope is displaced vertically from the sheave by the grip.
If the gage of the haul rope system is varied at any point along the line, the horizontal departure at any one tower shall be provided for in the design so that deropement cannot occur by virtue of such a departure.
Sheave mounts or mounting frames shall be designed to be adjustable, allowing the sheave units to be aligned and held in the plane of the rope.
See also 3.1.1.4 through 3.1.1.4.7 for the effect of tower height and location on sheave units. Prior to May 15, 1994:
Sheave flanges shall be as deep as possible, considering other features of the system. At the same time, rope grips shall be designed in relation to the sheave groove so as not to contact sheave flanges during normal operations, taking into consideration the anticipated amount of wear of the sheave liner groove. Grips shall be allowed to contact sheave flanges adjacent to the haul rope when the carrier swings, provided that this is considered in the design of the grips and sheaves. Furthermore, rope grips, sheave flanges, and hanger guides shall be designed so that hangers cannot be caught behind guides, and so that haul ropes and grips cannot be deroped from sheaves if the carrier is swinging within design limits as it approaches or passes the tower.
Suitable guards, of sufficient strength to resist the lateral forces caused by an inside deropement, shall be installed to prevent the rope from falling into a dangerous position within the tower structure. Construction of the entire sheave unit shall be such that the haul rope cannot become entangled in the sheave unit in the event the rope leaves the sheave toward the outside. On each sheave unit, rope-catching devices shall be installed to reduce the risk of the haul rope moving excessively in the direction of the load on the sheave unit in the event of deropement. These devices shall be located less than one-half the diameter of the sheaves from the normal operating position of the rope and shall extend a minimum of two rope diameters beyond the sheave flange. They shall be designed to permit the passage of the haul rope and grips after deropement. On each sheave unit, suitable deropement switch devices shall be installed and maintained that will stop the lift in case of deropement.
If the gage of the haul rope system is varied at any point along the line, the horizontal departure at any one tower shall be provided for in the design so that deropement cannot occur by virtue of such a departure.
Sheave mounts or mounting frames shall be designed to be adjustable, allowing the sheave units to be aligned and held in the plane of the rope.
See also 3.1.1.4 through 3.1.1.4.7 for the effect of tower height and location on sheave units.
3.1.4.4.2 Cabin.
May 15, 2000 to May 15, 2006:
Fully enclosed passenger cabins shall be ventilated. They shall be equipped with doors that fill the entire entrance opening. The minimum clearance width opening shall be 32 inches (815 mm). Each door shall be provided with a lock located in such a manner that it can be unlocked only by authorized persons or by automatic means.
The horizontal gap between the cabin door opening floor edge and platform edge shall not be greater than 1 inch (25.4 mm). The height of the cabin floor to the platform shall be within ± ½ inch (±12.7 mm). Where it is not operationally or structurally practical to meet these requirements, platform devices, vehicle devices, system devices, or bridge plates shall be provided for independent loading. All windows shall be of shatter-resistant material.
Means of emergency evacuation of passengers shall be provided. The maximum capacity of each cabin, both in pounds and kilograms and number of passengers, shall be posted in a conspicuous place in each cabin (see table D-1(r)). The minimum clear floor space in accessible cabins shall be 48 inches by 30 inches (1220 mm x 760 mm). Where special accessible cabins are used, it is recommended the waiting interval should not exceed 10 minutes.
All carriers shall be clearly identified with numbers located on each end of each carrier. Semi-open carriers shall meet applicable requirements for enclosed cabins and open chairs.
Jan. 1, 1994 to May 15, 2000:
Fully enclosed passenger cabins shall be ventilated. They shall be equipped with doors that fill the entire entrance opening. Each door shall be provided with a lock located in such a manner that it can be unlocked only by authorized persons or by automatic means. All windows shall be of shatter-resistant material.
Means of emergency evacuation of passengers shall be provided. The maximum capacity of each cabin, both in pounds and kilograms and number of passengers, shall be posted in a conspicuous place in each cabin.
If passengers are to remain standing, floor space of 2.5 square feet (0.23 square meter) per person shall be available; the width of cabin seats shall be at least 18 inches (46 cm) per person. All carriers shall be clearly identified with numbers located on each end of each carrier. Semi-open carriers shall meet applicable requirements for enclosed cabins and open chairs.
3.2.1.1 Applicable codes.
May 15, 2000 to May 15, 2006:
All electrical systems shall comply with 3.2.1.1 Applicable codes of the B77.1-1999 ANSI Standard.
Jan. 1, 1994 to May 15, 2000:
All electrical systems shall comply with 3.2.1.1 Applicable codes of the B77.1-1992 ANSI Standard.
Nov. 1, 1991 to Jan 1, 1994:
All electrical systems shall comply with 3.2.1.1 Applicable codes of the B77.1-1990 ANSI Standard.
Jan. 1, 1984 to Nov 1, 1991:
All electrical systems shall comply with 3.2.1.1 Applicable codes of the B77.1-1982 ANSI Standard. Jan 1, 1977 to Jan. 1, 1984:
All electrical work shall comply with 3.2.1.1 Applicable codes of the B77.1-1976 ANSI Standard. Jan 1, 1974 to Jan. 1, 1977:
All electrical work shall comply with 3.2.1.1 Applicable codes of the B77.1-1973 ANSI Standard. Jan 1, 1972 to Jan 1, 1974:
All electrical work shall comply with 3.2.1.1 Applicable codes of the B77.1-1970 ANSI Standard. Prior to Jan 1, 1972:
All electrical work shall comply with 3.2.1.1 Applicable codes of the B77.1-1960 ANSI Standard.
3.2.1.2 Location.
May 15, 2000 to May 15, 2006:
All electrical power transmission wiring located near or proposed to cross over aerial lifts shall comply with 3.2.1.2 Location of the B77.1-1999 ANSI Standard.
Jan. 1, 1994 to May 15, 2000:
All electrical power transmission wiring located near or proposed to cross over aerial lifts shall comply with 3.2.1.2 Location of the B77.1-1992 ANSI Standard.
Nov. 1, 1991 to Jan 1, 1994:
All electrical power transmission wiring located near or proposed to cross over aerial lifts shall comply with 3.2.1.2 Location of the B77.1-1990 ANSI Standard.
Jan. 1, 1984 to Nov 1, 1991:
All electrical power transmission wiring located near or proposed to cross over aerial lifts shall comply with 3.2.1.2 Location of the B77.1-1982 ANSI Standard.
Prior to Jan. 1, 1984:
All exposed electrical power transmission wiring shall be so located that in case of collapse or breakage of the power line it will not come into contact with carriers, ropes, or passengers.
3.2.1.3 Protection.
Prior to May 15, 2006:
All transformer stations and other high voltage electrical equipment shall be marked with conspicuous warning signs and shall be protected so as to prevent unauthorized persons from entering the area or coming in contact with any portion of the equipment or wiring. All power equipment shall be protected against overloads by circuit breakers or fuses.
3.2.1.4 Overhead cables.
Prior to May 15, 2006:
Signal, communication, and control circuits may be supported between towers that support the aerial lift. Voltage on overhead or exposed circuits shall be limited to 50 volts with the exception of the intermittent ring-down circuits for telephone systems.
3.2.1.5.5 Ground fault interrupter protection.
Prior to May 15, 2006:
Not required.
3.2.1.6.3 Haul rope grounding.
Jan 1, 1984 to Present:
Grounding sheaves with conductive liners or equivalent means should be provided at each end of the tramway for the he purpose of grounding haul ropes and track cables, as applicable, for static electrical discharge. For the haul rope on bicable systems or monocable systems with an isolated or insulated haul rope incorporated in the operating circuitry, no means of grounding are required when the operating circuit takes into consideration static electrical discharge. Prior to Jan 1, 1984:
Not required.
3.2.3.2 Stop gates.
On aerial lifts using chairs, an automatic stopping device beyond each unloading area are required where passengers wearing skis are required to disembark. The device shall automatically stop the aerial lift in the event a passenger rides beyond the intended point of unloading. The operation of the automatic stop device may be delayed or overridden momentarily by the operator or attendant.
3.2.9 Manual control devices.
May 15, 2006 to Present All automatic and manual stop and shutdown devices shall be of the manually reset type. An exception to this requirement is allowed for magnetic or optically operated automatic stop devices, if the operating circuit is such that it indicates that such devices initiated the stop and the circuit is of the manually reset type.
Manual stop switches (push button) shall be positively opened mechanically and their opening shall not be dependent upon springs.
Manual control devices shall be installed in all attendants’ and operators’ work positions, in machine rooms, and out-of-doors in proximity to all loading and unloading areas. As a minimum, each of these control locations shall include an Emergency Shutdown device and a Normal Stop device. All manual control devices located in or on a control cabinet shall be mounted so that they are in the same plane or face of the cabinet. The control devices shall not be located in a position that would require the operator or attendant to pass through the path of moving carriers in order to operate the controls. All control devices shall be conspicuously and permanently marked with the proper function and color code.
A full length stop cord or equivalent shall be provided adjacent to the terminal conveying equipment access ways provided for the inspection and maintenance while equipment is in operation. Prior to May 15, 2006 All automatic and manual stop and shutdown devices shall be of the manually reset type. An exception to this requirement is allowed for magnetic or optically operated automatic stop devices, if the operating circuit is such that it indicates that such devices initiated the stop and the circuit is of the manually reset type. Manual stop switches (push button) shall be positively opened mechanically and their opening shall not be dependent upon springs.
Manual control devices shall be installed in all attendants’ and operators’ work positions, in machine rooms, and out-of-doors in proximity to all loading and unloading areas. As a minimum at downhill loading stations, each of these control locations shall include an Emergency Shutdown device or a Normal Stop device. All manual control devices located in or on a control cabinet shall be mounted so that they are in the same plane or face of the cabinet. The control devices shall not be located in a position that would require the operator or attendant to pass through the path of moving carriers in order to operate the controls.
The devices shall be conspicuously and permanently marked with the proper function and color code.
3.2.12 Software security.
The “as built” documents shall include a procedure, developed by the aerial lift manufacturer or a Qualified Engineer, to ensure the security of the software logic and operating parameters that will control the aerial lift. Upon completion of the acceptance testing this procedure shall be implemented in a manner that will prevent unauthorized personnel from making changes to the software logic or operating parameters. All programmable logic and parameters shall be documented. Software programming and changes to the software logic shall be made by a qualified software programmer. Software programmers shall provide documents that include:
3.3.1.2.1 Requirements for signs.
(a) The design of any sign as well as its support and the installation procedure of such sign shall be considered a minor modification if the sign or aggregate of signs on a given tower is greater than three feet square (nine square feet).
(b) Signs, fasteners, or supporting members shall not interfere with the operation of the tramway.
(c) The design of structural components shall be reviewed to consider the increase in loading caused by any sign.
(d) Signs shall not interfere with passenger or attendant vision.
3.3.1.3 Operational plan for transportation of recreational equipment. Each licensee shall have an operational plan that has procedures for transportation of sports equipment and recreational devices by foot passengers. This plan shall be consistent with the tramway manufacturer's specifications and instructions, if any.
3.3.2.5 Operational requirements
Each licensee shall have an operational plan that identifies criteria for pre-operational tramway inspections for the transportation of personnel on aerial ropeways. Implementation of these procedures is intended for the protection of all personnel and shall be the responsibility of the area operator, supervisor, and the authorized individual. The preoperational plan shall include, but not be limited to: Minimum Requirements Prior to the daily preoperational ride and the completion of X.3.2.4.2 Daily preoperational inspection, or any initial start-up of the ropeway, the following minimum steps shall be taken;
Following procedural clearances, the aerial lift shall be started by the operator or at the direction of the operator. Capability for starting from other locations may be provided for maintenance or emergency operation.
The maze or corral, loading platform surface, breakover point, and the load/unload seat height shall be reasonably maintained according to the prevailing weather conditions and established procedures.
After any stop of an aerial lift, the operator shall determine the cause of the stop, and not restart until clearance has been obtained from all attended stations.
Procedures shall be established for terminating daily operations in such a manner that passengers will not be left on the aerial lift after it has been shut down. Loading ramps, as required, shall be closed and so marked.
When either loading or unloading portions of an intermediate station are not in operation, it shall be so signed and the loading station shall be closed to public access.
Should any carrier become damaged or otherwise rendered unfit for passenger transportation during normal operation, it shall be clearly and distinctively marked and not used for passengers until repaired or replaced. It shall be removed from the line as soon as feasible.
When wind or icing conditions are such that operation is hazardous to passengers or equipment, according to predetermined criteria based upon the area’s operational experience and the designer’s design considerations, the aerial lift shall be unloaded and the operation discontinued. If necessary under the predetermined criteria, device(s) shall be installed at appropriate location(s) to ascertain wind velocity and direction when aerial lifts are operated. No aerial lift shall operate when there is an electrical storm in the immediate vicinity. Should such conditions develop while the aerial lift is in operation, loading of passengers shall be terminated, and operation shall be continued only as long as necessary to unload all passengers. When such shutdown has been caused by an electrical storm, grounding of control circuits and haul ropes that are used as conductors in communication systems is permissible. Such grounding shall be removed prior to resumption of passenger operations.
The use of temporary circuits that have been installed for the purpose of bypassing failed electrical circuit(s) (see 3.2.6) shall meet these requirements in the following order:
A plan for evacuation of passengers from each aerial lift shall be developed and documented. The plan shall include:
All nonmetallic rope used for evacuation shall be of nylon or polyester (Dacron) fiber of either laid or braided construction. Laid rope of nylon shall be of a hard lay. These ropes shall be either of a static rescue type or a dynamic mountaineering type. Breaking strength, when new, shall be at least 15 times the maximum expected operating load but in no case less than 4000 pounds (17.8 kilonewtons). No natural fiber or polypropylene ropes shall be used. These ropes shall be carefully stored when not in use and shall be examined after each completed aerial lift evacuation and prior to each season of operation, both summer and winter, to ascertain that they are in satisfactory condition.
Carabiners, if used, shall be of the locking type.
3.3.4.3.1 Acceptance criteria for grips and hangers - minimum requirements. [Repealed eff. 05/15/2014]
3.3.5.5 Software parameter log.
A software parameters log shall be maintained for each aerial lift. This log is intended for changes in software parameters that can be altered which affect the supervision circuit. The log shall include, but not be limited to:
Section 4 Fixed grip aerial lifts Note: Timeframes relate to the ropeway installation date or modification date whichever controls, unless otherwise noted.
4.1.1.3.1 Location of power lines.
Jan, 1, 1977 to Present:
Power lines shall be located a minimum distance equal to the height of poles or support structures from any passenger tramway so that poles and electrical lines cannot touch any portion of the tramway, loading or unloading points or platforms and tow path, if applicable, upon collapse of poles or lines, unless suitable and approved precautions are taken to safeguard human lives.
4.1.1.3.2 Air space requirements.
May 15, 2000 to Present:
No passenger tramway installation shall be permitted to operate when a structure encroaches into the air space of the passenger tramway, defined as the area bounded by vertical planes commencing at a point thirty-five (35) feet from the intersection of the vertical planes of the ropes or cables and ground surface.
For purposes of this rule, buildings controlled by the licensee used primarily for maintenance and operation of the lift and other tramways shall not be considered structures; however, buildings must comply with the following.
No passenger tramway installation shall be permitted to operate when a structure encroaches into the air space of the passenger tramway, defined as the area bounded by planes having an outward slope of one horizontal and two vertical and commencing at a point twenty (20) feet horizontally outside of the intersection of the vertical planes of ropes or cables and ground surface.
No passenger tramway installation shall be permitted whenever the Passenger Tramway Operator does not have permanent and irrevocable control of the following air space (except when the passenger tramway is located on Forest Service land): the area bounded by planes having an outward slope of one horizontal and two vertical and commencing at a point twenty (20) feet horizontally outside of the intersection of the vertical planes of ropes or cables and ground surface.
Prior to Dec. 30, 1977:
None required
Note: Timeframes stated for this rule define the air space requirements for each ropeway at the time when the encroachment was known to the area and DO NOT pertain to the installation date of the ropeway.
May 15, 2000 to Present:
Any cable or rope installed on or near a ropeway that may represent a hazard to the ropeway shall be monitored to automatically stop the ropeway if the cable or rope fails. Failure would be defined as per Section 23.1 (g).
Not required
4.1.1.5.2 Clearances.
Jan, 1, 1984 to Nov. 1, 1991:
Terminals and towers shall be designed and installed to provide the clearances as herein specified and to minimize surge of the line under operating conditions. Local wind conditions shall be taken into consideration.
The minimum distance between passing carriers, each swung 10 degrees inward from the vertical, shall be the greater of the following:
The distance between haul ropes, (or track cables), for the purpose of these checks, shall be considered as equal to the gauge of the line.
External structures, posts, or obstructions, other than lift structural components, shall have at least 4 feet (1.22 meters) of clearance from either edge of a loaded open carrier passenger seat or open cabin body (measured from the outermost attachments on or parts of the carrier while the carrier is hanging in a vertical position).
Dec. 31, 1977 to Jan. 1, 1984:
Terminals and towers shall be designed and installed to provide the clearances as herein specified and to minimize surge of the line under operating conditions. Local wind conditions shall be taken into consideration.
The minimum distance between passing carriers, each swung 10 degrees inward from the vertical, shall be the greater of the following:
The distance between haul ropes, (or track cables), for the purpose of these checks, shall be considered as equal to the gauge of the line.
Prior to Dec. 31, 1977:
All towers shall be equipped with guards to prevent contact of carriers or hangers with a tower structure or tower machinery except that such guards shall not be required if such contact does not occur when the carrier is swung freely 15 degrees from the vertical position. In the absence of guards described herein, the following minimum clearances shall prevail when the carrier is swung inward 10 degrees from the vertical position:
The following clearance requirements shall be met to prevent entanglement of skis with tower structure. Clearance is here defined to mean the distance between inner limit of passenger seat and clearance line or surface of tower.
With the chair swinging laterally 10 degrees from the vertical position, or to the limit permitted by the guards, if any, if clearance is less than 24 inches from any open frame tower or 18 inches from any closed tubular tower, guards shall be provided on the up-going side to keep skis from being caught in the structure. Such guards shall be at least 72 inches in height, extending 36 inches above and below average foot level.
A tubular tower with permanent ladder rungs shall be considered as an open frame tower, with the following exceptions:
4.1.1.5.3 Terminal Clearances.
Prior to Nov. 1, 1991:
Not required.
4.1.1.11.2 Acceptance tests.
Before an aerial lift that is new or relocated or that has not been operated for routine maintenance within the previous 2 years is opened to the public, it shall be given thorough tests by qualified personnel to verify compliance with the plans and specifications of the designer. The designer or manufacturer shall propose and submit an acceptance test procedure.
Test load per carrier shall be 110% of the design live load. Thorough load and operating tests shall be performed under full loading and any partial loadings that may provide the most adverse operating conditions. The functioning of all push-button stops, automatic stops, limit switches, deropement switches, and communications shall be checked. Acceleration and deceleration rates shall be satisfactory under all loadings (see 4.1.2.4). Motive power and all braking and rollback devices (see 4.1.2.6) shall be proved adequate under the most adverse loadings.
On systems operating at 600 feet per minute (3 meters per second) or greater, a plot of rope speed versus time shall be recorded for stops that the manufacturer or Qualified Engineer has designated in the acceptance test procedure. As a minimum, the plot shall show the rope speed every 0.2 seconds from the initiation of the stop to when the rope is stopped. The final brake system settings and brake test values shall be documented in the acceptance test results.
Any changes to software logic that would affect a Protection or Operation Circuit after the start of initial testing shall result in a restart of testing to ensure software logic changes have not affected those systems already tested. Retesting for changes in software parameters shall be at the discretion of the Authorities Having Jurisdiction (AHJ).
4.1.2.1.3 Power unit interlock.
Prior to May 15, 2006:
Not required.
4.1.2.6 Brakes and rollback devices.
May 15, 2006 to Present:
The aerial lift shall have the following friction-type brakes and other devices as specified in table 4-3: - service brake (see 4.1.2.6.1);
- drive train backstop (see 4.1.2.6.4).
All braking systems shall be designed to ensure that:
Each braking system shall be capable of operation to comply with daily inspections and periodic testing. The manufacturer or a Qualified Engineer shall furnish a written procedure to be followed, and specify the auxiliary equipment necessary for periodic testing and adjustment of the holding force of each brake and backstop device. The procedure shall additionally specify:
If a device is permanently installed to cause a brake, rollback, or drive train backstop device to be disabled for testing, it shall be electronically monitored so that the aerial lift cannot be operated in its normal mode when the brakes are so disabled.
Self-braking: A lift that decelerates, Not Required Not Not Not Required stops, & remains stopped within the Required Required Required service brake performance requirements without a braking device Nonoverhauling: A lift that will not Required* Required Not Not Not Required accelerate in either direction when it is Required Required not driven, but is not self-braking Overhauling, reverse direction: A lift Required Required Required Required Not Required that will accelerate in the reverse direction when it is not driven Overhauling, forward direction: A lift Required Required Not Not Required that will accelerate in forward direction Required Required when it is not driven * A service brake is not required if the overhauling, reverse direction lift will meet the service brake stopping requirements under most unfavorable design loading conditions.
Prior to May 15, 2006:
The aerial lift shall have the following friction-type brakes and other devices as specified in table 4-3: – service brake (see 4.1.2.6.1);
– drive train backstop (see 4.1.2.6.4).
All braking systems shall be designed to ensure that:
The service brake, drive sheave brake, rollback device, and drive train backstop device shall be designed such that failure of one system will not impair the function of the other systems, and all brakes shall have the braking force applied by springs, weights, or other approved forms of stored energy. The service brake, drive sheave brake, rollback, and drive train backstop devices shall be designed to assure operation under all anticipated conditions.
Stopping distances specified in 4.1.2.5.1 shall be achieved by each brake without the aid of other braking devices or drive regeneration.
Each braking system shall be capable of operation to comply with daily inspections and periodic testing. A Qualified Engineer shall furnish a written procedure to be followed, and specify the auxiliary equipment necessary for periodic testing and adjustment of the holding force of each brake and backstop device. This procedure shall be performed during the acceptance test, and at the frequency specified, to demonstrate the ability of each brake to produce the required torque. Such testing shall be accomplished as part of normal maintenance during the operating season, but shall be performed when the aerial lift is not open to the public. If a device is permanently installed to cause a brake, rollback, or drive train backstop device to be disabled for testing, it shall be electronically monitored so that the aerial lift cannot be operated in its normal mode when the brakes are so disabled.
Self-braking: Not Required Not Not Not Required A lift that decelerates, stops, & Required Required Required remains stopped within the service brake performance requirements without a braking device Nonoverhauling: Required* Required Not Not Not Required A lift that will not accelerate in either Required Required direction when it is not driven, but is not self-braking Overhauling, reverse direction: Required Required Required Required Not Required A lift that will accelerate in the reverse direction when it is not driven Overhauling, forward direction: Required Required Not Not Required A lift that will accelerate in forward Required Required direction when it is not driven * A service brake is not required if the overhauling, reverse direction lift will meet the service brake stopping requirements under most unfavorable design loading conditions.
The brake shall be in a normally applied position. It shall be held open for operation of the aerial lift and shall be applied when the aerial lift is stopped.
The drive sheave brake shall operate on the drive sheave assembly. The drive sheave brake shall be capable of being activated both manually and automatically to stop and hold the aerial lift under the most unfavorable design loading condition. Deceleration rates or stopping distances specified in 4.1.2.5 shall be achieved by the drive sheave brake without the aid of other braking devices or drive regeneration. Application of the drive sheave brake shall automatically disconnect the power source to the power unit in use. This brake shall act automatically when the speed of the haul rope exceeds the design value by 15% in either direction of an overhauling lift.
The rollback device shall act directly on the drive sheave assembly or on the haul rope. When it has been determined that under the most unfavorable design loading condition, haul rope slippage will not occur, the rollback device may be located at the return sheave assembly. However, the rollback device shall not be located at other than the drive station, unless its location will not decrease the factor of safety of the haul rope below the minimum permissible value whenever the rollback device is statically engaged. Under the most unfavorable design loading condition, the rollback device shall automatically stop reverse rotation of the aerial lift before the haul rope travels in excess of 36 inches (915 mm) in the reverse direction (see 4.2.3.7 for electrical requirements).
A drive train backstop device shall conform to the following requirements:
4.1.2.7.4 Egress.
Jan. 1, 1994 to Present:
Permanent stairs and walkways shall be provided for egress from all machinery areas. The maximum angle of inclination for the stairs shall not exceed 70 degrees. Stairs and walkways shall have a minimum width of 18 inches. Stair treads shall have a minimum depth of 4 inches. Walkway surfaces and stair treads shall be constructed of non-skid bar grating or expanded metal. Handrails shall be provided. Prior to Jan 1, 1994:
Not required.
4.1.2.8.2 Hall rope terminal sheaves (Bullwheel and deflection sheaves):
Haul rope terminal sheave frames shall be designed to retain the rope in the event of the failure of the sheave, shaft, or mounting. In instances where the sheave is cantilevered, the design working stresses shall not be more than 60% of those otherwise allowable. The minimum diameter of terminal sheaves shall be 72 times the nominal diameter of the haul rope. The sheave assembly shall be designed to retain the haul rope in the event of a deropement from the sheave. A flange extension of 1-½ times the rope diameter (measured from the bottom of the rope groove) shall be deemed adequate for retention.
Haul rope terminal sheaves that act as driving, braking, or holding sheaves shall be so designed tht the haul rope does not slip in the sheave groove. The design coefficient of friction for a particular sheave liner shall not exceed the following values:
Sheave Liner Coefficient of Friction Steel or cast iron grooves 0.070 Leather 0.150 Rubber, neoprene, or other 0.205
4.1.2.10 Tension systems.
Prior to May 15, 2006:
Counterweights, hydraulic and pneumatic cylinders, or other suitable devices shall be used to provide the tensioning requirements of the particular installation. All devices used to provide the tension shall have sufficient travel to adjust to all normal operating changes in loading and temperature. The tension for haul ropes for all modes of operation shall be determined by the design engineer. Tension systems may be automatic or manual; however, all systems shall have monitoring equipment that will automatically prevent operation outside of design limits (see 4.1.2.11.2(c)). Tension systems may be adjustable to provide proper tensions for different modes of aerial lift operation. The tension system design shall consider changes, for each mode of operation, in tensions due to rope elongation, friction and other forces affecting traction on driving, braking, or holding sheaves, tower and sheave loading, and maximum vertical loads on grips to assure that tensions remain within design limits.
If the system fails to provide the design operating pressure, the aerial lift shall be able to be operated to unload passengers.
Cylinders and their attachments shall each have a minimum factor of safety of 5. The factor of safety is equal to the ultimate tensile strength of the cylinder divided by the maximum steady- state design tension.
The systems providing operating pressure for the cylinder shall have a minimum factor of safety of 5 unless a high-velocity check-valve or flow-control device is used where the pressure line is connected to the cylinder. The check-valve shall be rated to hold twice the normal operating pressure. The remainder of the system shall not exceed the manufacturer’s published working pressures. Provisions shall be made to restrict the movement of pressure lines or hoses should they become severed under pressure. When pneumatic storage cylinders, accumulators, or other similar devices are used, they shall be located so that they cannot be knocked over or damaged.
Counterweights, when used, shall be arranged to move freely up and down. Enclosures for counterweights shall be provided where necessary to prevent snow, ice, water, and other materials from accumulating under and around the counterweights and interfering with their free movement. Visual access shall be provided to areas beneath and above all counterweights contained in enclosures or pits. When a counterweight is contained in a structural frame, guides shall be provided to protect the frame and to ensure free movement of the counterweight. Where snow enclosures are not required, guardrails or enclosures shall be provided to prevent unauthorized persons from coming in contact with or passing under counterweights.
Wire ropes in tension systems shall have a minimum factor of safety of 6 when new (see 7.1.3.1). On arrangements involving rope reeving, the maximum design static tension with sheave friction taken into account shall be the basis for determining the factor of safety. See 7.3 for additional requirements. No rotation-resistant ropes shall be used in tension systems (see 1.4 B rotation- resistant ropes).
Wire ropes in tension systems shall be adjusted so that the counterweight will reach the end of its travel before the attached tension sheave carriage comes within 6 inches (150 mm) of the end of its travel. When wire ropes are used with pneumatic or hydraulic cylinders, they shall be adjusted so that connecting devices will not contact the reeving devices before the ram reaches the travel limits of the cylinder.
Roller, leaf, or welded link chains may be used in tension systems (see section 7). For chain used as a tensioning component, where the chain does not pass through or around sprockets, the minimum factor of safety shall be 5 (see 7.1.3.3). For applications of chain where any sprockets are used, the minimum factor of safety shall be 6.
Winches or other mechanical devices that are used for take-up and remain part of the system shall have a minimum factor of safety of 6 against their ultimate capacity. They shall have a positive lock against release. Where this factor cannot be established by the manufacturer’s endorsement, a device shall be installed on the tension system rope or chain ahead of the winch/mechanical device that will keep the tension system intact in the event of failure or release of the device.
The diameter of the winding drum shall not be less than the specified minimum sheave diameters referenced as Condition C in 4.1.2.7.3 for rope.
4.1.3.1 Towers.
Prior to Nov. 1, 1991:
The design of the tower structure and foundation shall be in accordance with the requirements of 4.1.1.6. Where guyed towers are used and guys intersect the ground within or near ski runs, the guys shall be marked for visibility.
Means shall be provided for ready access from the ground to all tower tops. Permanent ladders are required for heights above those accessible by portable ladders. Portable ladders, if used, shall be in at least sufficient quantity to be available at each point where attendants are positioned. Portable ladders extending more than 20 feet (6.10 meters) shall not be used. Towers shall be identified with successive numbers clearly visible to passengers. Where towers are designed to permit variations in rope height, sheave unit supports shall be guided and attached so as to prevent misalignment by rotation
4.1.3.3.2 (g) Sheave and sheave unit design.
Prior to May 15, 1994:
Sheave flanges shall be as deep as possible, considering other features of the system. At the same time, rope grips shall be designed in relation to the sheave groove so as not to contact sheave flanges during normal operations, taking into consideration the anticipated amount of wear of the sheave liner groove. Grips shall be allowed to contact sheave flanges adjacent to the haul rope when the carrier swings, provided that this is considered in the design of the grips and sheaves. Furthermore, rope grips, sheave flanges, and hanger guides shall be designed so that hangers cannot be caught behind guides, and so that haul ropes and grips cannot be deroped from sheaves if the carrier is swinging within design limits as it approaches or passes the tower.
Suitable guards, of sufficient strength to resist the lateral forces caused by an inside deropement, shall be installed.
Construction of the entire sheave unit shall be such that the haul rope cannot become entangled in the sheave unit in the event the rope leaves the sheave toward the outside. On each sheave unit, rope-catching devices shall be installed to reduce the risk of the rope moving excessively in the direction of the load on the sheave unit in the event of deropement. These devices shall be located less than one-half the diameter of the sheaves from the normal operating position of the rope and shall extend a minimum of two rope diameters beyond the sheave flange. Alternatively, when the catcher is located so that the rope cannot move in the direction of the load when it passes from the edge of the sheave to a position in the catcher, the catcher shall extend a minimum of two rope diameters beyond the center of the rope when the rope has reached the point where the deropement switch device initiates a stop. Rope-catching devices shall be designed to permit the passage of the haul rope and grips after deropement. The catcher shall be independent from the sheave. On each sheave unit, suitable deropement switch devices shall be installed and maintained that will stop the lift in case of deropement.
On lifts where the carrier speed exceeds 600 feet per minute (3.0 meters per second), at least one device that senses the position of the rope shall be installed on each sheave unit. The device shall initiate a stop before the rope leaves the sheave in the horizontal direction or when the rope is displaced in the vertical direction by one rope diameter plus the distance that the rope is displaced vertically from the sheave by the grip.
If the gage of the haul rope system is varied at any point along the line, the horizontal departure at any one tower shall be provided for in the design so that deropement cannot occur by virtue of such a departure.
Sheave mounts or mounting frames shall be designed to be adjustable, allowing the sheave units to be aligned and held in the plane of the rope.
See also 4.1.1.4 through 4.1.1.4.3 for the effect of tower height and location on sheave units.
4.1.4.4.2 Cabin.
May 15, 2000 to May 15, 2006:
Fully enclosed passenger cabins shall be ventilated. They shall be equipped with doors that fill the entire entrance opening. The minimum clearance width opening shall be 32 inches (815 mm). Each door shall be provided with a lock located in such a manner that it can be unlocked only by authorized persons or by automatic means.
The horizontal gap between the cabin door opening floor edge and platform edge shall not be greater than 1 inch (25.4mm). The height of the cabin floor and the platform shall be within ± ½ inch (±12.7mm). Where it is not operationally or structurally practical to meet these requirements, platform devices, vehicle devices, system devices, or bridge plates shall be provided for independent loading. All windows shall be of shatter-resistant material.
Means of emergency evacuation of passengers shall be provided. The maximum capacity of each cabin, both in pounds and kilograms and number of passengers, shall be posted in a conspicuous place in each cabin (see Annex D). The minimum clear floor space in accessible cabins shall be 48 inches by 30 inches (1220 mm X 760 mm). Where special accessible cabins are used, it is recommended the waiting interval should not exceed 10 minutes.
All carriers shall be clearly identified with numbers located on each end of each carrier. Semi-open carriers shall meet applicable requirements for enclosed cabins and open chairs.
Jan. 1, 1994 to May 15, 2000:
Fully enclosed passenger cabins shall be ventilated. They shall be equipped with doors that fill the entire entrance opening. The minimum opening door width shall be 32 inches (815 mm). Each door shall be provided with a lock located in such a manner that it can be unlocked only by authorized persons or by automatic means.
The horizontal gap between the cabin door opening floor edge and platform edge shall not be greater than 1 inch (25.4mm). The height of the cabin floor and the platform shall be within 2 inch (12.7mm). Where it is not operationally or structurally practical to meet these requirements, platform devices, vehicle devices, system devices, or bridge plates shall be provided for independent loading. All windows shall be of shatter-resistant material.
Means of emergency evacuation of passengers shall be provided. The maximum capacity of each cabin, both in pounds and kilograms and number of passengers, shall be posted in a conspicuous place in each cabin.
The width of cabin seats shall be at least 18 inches (460 mm) per person. If passengers are to remain standing, floor space of 2.5 square feet (0.232 square meter) per person shall be available. The minimum clear floor space in accessible cabins shall be 48 inches by 30 inches (1220 mm X 760 mm). Where special accessible cabins are used, it is recommended the waiting interval should not exceed 10 minutes. All carriers shall be clearly identified with numbers located on each end of each carrier. Semi-open carriers shall meet applicable requirements for enclosed cabins and open chairs.
4.1.4.5.4 Chair safety details.
Prior to May 15, 1999:
Each chair shall be equipped with a railing at each side, to a height of not less than 4 inches (10 cm) above the seat for a distance of not less than 12 inches (30 cm) from the back of the seat. For aerial lifts operating primarily for foot passengers, each chair shall be equipped with a restraining device that will not open under forward pressure.
4.2.1.1 Applicable codes.
May 15, 2000 to May 15, 2006:
All electrical systems shall comply with 4.2.1.1 Applicable codes of the B77.1-1999 ANSI Standard.
Jan. 1, 1994 to May 15, 2000:
All electrical systems shall comply with 4.2.1.1 Applicable codes of the B77.1-1992 ANSI Standard.
Nov. 1, 1991 to Jan 1, 1994:
All electrical systems shall comply with 4.2.1.1 Applicable codes of the B77.1-1990 ANSI Standard.
Jan. 1, 1984 to Nov 1, 1991:
All electrical systems shall comply with 4.2.1.1 Applicable codes of the B77.1-1982 ANSI Standard. Jan 1, 1977 to Jan. 1, 1984:
All electrical work shall comply with 4.2.1.1 Applicable codes of the B77.1-1976 ANSI Standard. Jan 1, 1974 to Jan. 1, 1977:
All electrical work shall comply with 4.2.1.1 Applicable codes of the B77.1-1973 ANSI Standard. Jan 1, 1972 to Jan 1, 1974:
All electrical work shall comply with 4.2.1.1 Applicable codes of the B77.1-1970 ANSI Standard. Prior to Jan 1, 1972:
All electrical work shall comply with 4.2.1.1 Applicable codes of the B77.1-1960 ANSI Standard.
4.2.1.2 Location.
May 15, 2000 to May 15, 2006:
All electrical power transmission wiring located near or proposed to cross over aerial lifts shall comply with 4.2.1.2 Location of the B77.1-1999 ANSI Standard.
Jan. 1, 1994 to May 15, 2000:
All electrical power transmission wiring located near or proposed to cross over aerial lifts shall comply with 4.2.1.2 Location of the B77.1-1992 ANSI Standard.
Nov. 1, 1991 to Jan 1, 1994:
All electrical power transmission wiring located near or proposed to cross over aerial lifts shall comply with 4.2.1.2 Location of the B77.1-1990 ANSI Standard.
Jan. 1, 1984 to Nov 1, 1991:
All electrical power transmission wiring located near or proposed to cross over aerial lifts shall comply with 4.2.1.2 Location of the B77.1-1982 ANSI Standard.
Prior to Jan. 1, 1984:
All exposed electrical power transmission wiring shall be so located that in case of collapse or breakage of the power line it will not come into contact with carriers, ropes, or passengers.
4.2.1.3 Protection.
Prior to May 15, 2006:
All transformer stations and other high voltage electrical equipment shall be marked with conspicuous warning signs and shall be protected so as to prevent unauthorized persons from entering the area or coming in contact with any portion of the equipment or wiring. All power equipment shall be protected against overloads by circuit breakers or fuses.
4.2.1.4 Overhead cables.
Prior to May 15, 2006:
Signal, communication, and control circuits may be supported between towers that support the aerial lift. Voltage on overhead or exposed circuits shall be limited to 50 volts with the exception of the intermittent ring-down circuits for telephone systems.
4.2.1.5.5 Ground fault interrupter protection.
Prior to May 15, 2006:
Not required.
4.2.1.6.3 Haul rope grounding.
Jan 1, 1984 to Present:
Grounding sheaves or equivalent means shall be provided at each end of the tramway for the purpose of grounding haul ropes, as applicable, for static electrical discharge. For systems with an isolated or insulated haul rope incorporated in the operating circuitry, no means of grounding are required when the operating circuit takes into consideration static electrical discharge. Prior to Jan 1, 1984:
Not required.
4.2.2 Electrical system circuit design and classification.
Prior to May 15, 2006:
Not required.
4.2.3.8 Acceleration/deceleration monitoring.
Prior to May 15, 2006:
Not required.
4.2.9 Manual control devices.
May 15, 2006 to Present All automatic and manual stop and shutdown devices shall be of the manually reset type. An exception to this requirement is allowed for magnetic or optically operated automatic stop devices, if the operating circuit is such that it indicates that such devices initiated the stop and the circuit is of the manually reset type.
Manual stop switches (push button) shall be positively opened mechanically and their opening shall not be dependent upon springs.
Manual control devices shall be installed in all attendants’ and operators’ work positions, in machine rooms, and out-of-doors in proximity to all loading and unloading areas. As a minimum, each of these control locations shall include an Emergency Shutdown device and a Normal Stop device. All manual control devices located in or on a control cabinet shall be mounted so that they are in the same plane or face of the cabinet. The control devices shall not be located in a position that would require the operator or attendant to pass through the path of moving carriers in order to operate the controls. All control devices shall be conspicuously and permanently marked with the proper function and color code.
Prior to May 15, 2006:
All automatic and manual stop and shutdown devices shall be of the manually reset type. An exception to this requirement is allowed for magnetic or optically operated automatic stop devices, if the operating circuit is such that it indicates that such devices initiated the stop and the circuit is of the manually reset type. Manual stop switches (push button) shall be positively opened mechanically and their opening shall not be dependent upon springs.
Manual control devices shall be installed in all attendants’ and operators’ work positions, in machine rooms, and out-of-doors in proximity to all loading and unloading areas. As a minimum at downhill loading stations, each of these control locations shall include an Emergency Shutdown device or a Normal Stop device. All manual control devices located in or on a control cabinet shall be mounted so that they are in the same plane or face of the cabinet. The control devices shall not be located in a position that would require the operator or attendant to pass through the path of moving carriers in order to operate the controls.
The devices shall be conspicuously and permanently marked with the proper function and color code.
4.2.10 Safety of operating and maintenance personnel.
Prior to May 15, 1999:
The sign “Personnel Working on Lift - Do Not Start” or a similar warning sign shall be hung on the main disconnect switch or at control points for starting the power unit(s) when persons are working on the aerial lift.
Provision shall be incorporated in the ropeway design to render the system inoperable when necessary for the Lock-out Tag-out protection of personnel working on the aerial lift.
4.2.12 Software security.
The “as built” documents shall include a procedure, developed by the aerial lift manufacturer or a Qualified Engineer, to ensure the security of the software logic and operating parameters that will control the aerial lift. Upon completion of the acceptance testing this procedure shall be implemented in a manner that will prevent unauthorized personnel from making changes to the software logic or operating parameters. All programmable logic and parameters shall be documented. Software programming and changes to the software logic shall be made by a qualified software programmer. Software programmers shall provide documents that include:
4.3.1.2.1 Requirements for signs.
4.3.1.3 Operational plan for transportation of recreational equipment. Each licensee shall have an operational plan that has procedures for transportation of sports equipment and recreational devices by foot passengers. This plan shall be consistent with the tramway manufacturer's specifications and instructions, if any.
4.3.2.5 Operational requirements
Each licensee shall have an operational plan that identifies criteria for pre-operational tramway inspections for the transportation of personnel on aerial ropeways. Implementation of these procedures is intended for the protection of all personnel and shall be the responsibility of the area operator, supervisor, and the authorized individual. The preoperational plan shall include, but not be limited to: Minimum Requirements Prior to the daily preoperational ride and the completion of X.3.2.4.2 Daily preoperational inspection, or any initial start-up of the ropeway, the following minimum steps shall be taken;
Following procedural clearances, the aerial lift shall be started by the operator or at the direction of the operator. Capability for starting from other locations may be provided for maintenance or emergency operation.
The maze or corral, loading platform surface, breakover point, and the load/unload seat height shall be reasonably maintained according to the prevailing weather conditions and established procedures.
After any stop of an aerial lift, the operator shall determine the cause of the stop, and not restart until clearance has been obtained from all attended stations.
Procedures shall be established for terminating daily operations in such a manner that passengers will not be left on the aerial lift after it has been shut down. Loading ramps, as required, shall be closed and so marked.
When either loading or unloading portions of an intermediate station are not in operation, it shall be so signed and the loading station shall be closed to public access.
Should any carrier become damaged or otherwise rendered unfit for passenger transportation during normal operation, it shall be clearly and distinctively marked and not used for passengers until repaired or replaced. It shall be removed from the line as soon as feasible.
When wind or icing conditions are such that operation is hazardous to passengers or equipment, according to predetermined criteria based upon the area’s operational experience and the designer’s design considerations, the aerial lift shall be unloaded and the operation discontinued. If necessary under the predetermined criteria, device(s) shall be installed at appropriate location(s) to ascertain wind velocity and direction when aerial lifts are operated. No aerial lift shall operate when there is an electrical storm in the immediate vicinity. Should such conditions develop while the aerial lift is in operation, loading of passengers shall be terminated, and operation shall be continued only as long as necessary to unload all passengers. When such shutdown has been caused by an electrical storm, grounding of control circuits and haul ropes that are used as conductors in communication systems is permissible. Such grounding shall be removed prior to resumption of passenger operations.
The use of temporary circuits that have been installed for the purpose of bypassing failed electrical circuit(s) (see 4.2.6) shall meet these requirements in the following order:
A plan for evacuation of passengers from each aerial lift shall be developed and documented. The plan shall include:
All nonmetallic rope used for evacuation shall be of nylon or polyester (Dacron) fiber of either laid or braided construction. Laid rope of nylon shall be of a hard lay. These ropes shall be either of a static rescue type or a dynamic mountaineering type. Breaking strength, when new, shall be at least 15 times the maximum expected operating load but in no case less than 4000 pounds (17.8 kilonewtons). No natural fiber or polypropylene ropes shall be used. These ropes shall be carefully stored when not in use and shall be examined after each completed aerial lift evacuation and prior to each season of operation, both summer and winter, to ascertain that they are in satisfactory condition.
Carabiners, if used, shall be of the locking type.
4.3.4.3.1 Carrier inspection plan.
The carrier inspection plan shall include the following:
4.3.5.5 Software parameter log.
A software parameters log shall be maintained for each aerial lift. This log is intended for changes in software parameters that can be altered which affect the supervision circuit. The log shall include, but not be limited to:
Section 5 Surface lifts Note: Timeframes relate to the ropeway installation date or modification date whichever controls, unless otherwise noted.
5.1.1.3.4 Location of power lines.
Jan, 1, 1977 to Present:
Power lines shall be located a minimum distance equal to the height of poles or support structures from any passenger tramway so that poles and electrical lines cannot touch any portion of the tramway, loading or unloading points or platforms and tow path, if applicable, upon collapse of poles or lines, unless suitable and approved precautions are taken to safeguard human lives.
5.1.1.3.5 Air space requirements.
May 15, 2000 to Present:
No passenger tramway installation shall be permitted to operate when a structure encroaches into the air space of the passenger tramway, defined as the area bounded by vertical planes commencing at a point thirty-five (35) feet from the intersection of the vertical planes of the ropes or cables and ground surface.
For purposes of this rule, buildings controlled by the licensee used primarily for maintenance and operation of the lift and other tramways shall not be considered structures; however, buildings must comply with the following.
No passenger tramway installation shall be permitted to operate when a structure encroaches into the air space of the passenger tramway, defined as the area bounded by planes having an outward slope of one horizontal and two vertical and commencing at a point twenty (20) feet horizontally outside of the intersection of the vertical planes of ropes or cables and ground surface Dec. 30, 1977 to Jan. 1, 1994:
No passenger tramway installation shall be permitted whenever the Passenger Tramway Operator does not have permanent and irrevocable control of the following air space (except when the passenger tramway is located on Forest Service land): the area bounded by planes having an outward slope of one horizontal and two vertical and commencing at a point twenty (20) feet horizontally outside of the intersection of the vertical planes of ropes or cables and ground surface Prior to Dec. 30, 1977:
Not required
Note: Timeframes stated for this rule define the air space requirements for each ropeway at the time when the encroachment was known to the area and DO NOT pertain to the installation date of the ropeway.
May 15, 2000 to Present:
Any cable or rope installed on or near a ropeway that may represent a hazard to the ropeway shall be monitored to automatically stop the ropeway if the cable or rope fails. Failure would be defined as per Section 23.1 (g).
EXCEPTION: Track or haul ropes are excluded from this rule. Prior to May 15, 2000:
Not required
5.1.1.5.2 Clearances.
Prior to Dec. 31, 1977:
A minimum clearance of 36 inches shall be maintained between the base of the tower and the vertical plane of the upward traveling cable. With respect to the downward traveling cable, a minimum clearance of 24 inches shall be provided between towing outfit in its normal position and the tower. This paragraph is not to be construed as preventing the authority having jurisdiction from requiring larger minimum clearances, at its discretion. A definite need for additional clearances arises when it is proposed to transport more than two skiers per towing outfit.
5.1.2.8.2 Haul rope terminal sheaves (Bullwheel and deflection sheaves):
Haul rope terminal sheave frames shall be designed to retain the rope in the event of the failure of the sheave, shaft, or mounting. In instances where the sheave is cantilevered, the design working stresses shall not be more than 60% of those otherwise allowable. The minimum diameter of terminal sheaves shall be 72 times the nominal diameter of the haul rope. The sheave assembly shall be designed to retain the haul rope in the event of a deropement from the sheave. A flange extension of 1-½ times the rope diameter (measured from the bottom of the rope groove) shall be deemed adequate for retention.
Haul rope terminal sheaves that act as driving, braking, or holding sheaves shall be so designed tht the haul rope does not slip in the sheave groove. The design coefficient of friction for a particular sheave liner shall not exceed the following values:
Sheave Liner Coefficient of Friction Steel or cast iron grooves 0.070 Leather 0.150 Rubber, neoprene, or other 0.205
5.1.3.1 Towers.
Prior to Nov. 1, 1991:
The design of the tower structure and foundation shall be in accordance with the requirements of 5.1.1.6. Where guyed towers are used and guys intersect the ground within or near ski runs, the guys shall be marked for visibility.
Means shall be provided for ready access from the ground to all tower tops. Permanent ladders are required for heights above those accessible by portable ladders. Portable ladders, if used, shall be in at least sufficient quantity to be available at each point where attendants are positioned. Portable ladders extending more than 20 feet (6.10 meters) shall not be used. Towers shall be identified with successive numbers clearly visible to passengers. Where towers are designed to permit variations in rope height, sheave unit supports shall be guided and attached so as to prevent misalignment by rotation
5.2.1.1 Applicable codes.
May 15, 2000 to May 15, 2006:
All electrical systems shall comply with 5.2.1.1 Applicable codes of the B77.1-1999 ANSI Standard.
Jan. 1, 1994 to May 15, 2000:
All electrical systems shall comply with 5.2.1.1 Applicable codes of the B77.1-1992 ANSI Standard.
Nov. 1, 1991 to Jan 1, 1994:
All electrical systems shall comply with 5.2.1.1 Applicable codes of the B77.1-1990 ANSI Standard.
Jan. 1, 1984 to Nov 1, 1991:
All electrical systems shall comply with 5.2.1.1 Applicable codes of the B77.1-1982 ANSI Standard. Jan 1, 1977 to Jan. 1, 1984:
All electrical work shall comply with 5.2.1.1 Applicable codes of the B77.1-1976 ANSI Standard. Jan 1, 1974 to Jan. 1, 1977:
All electrical work shall comply with 5.2.1.1 Applicable codes of the B77.1-1973 ANSI Standard. Jan 1, 1972 to Jan 1, 1974:
All electrical work shall comply with 5.2.1.1 Applicable codes of the B77.1-1970 ANSI Standard. Prior to Jan 1, 1972:
All electrical work shall comply with 5.2.1.1 Applicable codes of the B77.1-1960 ANSI Standard.
5.2.1.2 Location.
May 15, 2000 to May 15, 2006:
All electrical power transmission wiring located near or proposed to cross over aerial lifts shall comply with 5.2.1.2 Location of the B77.1-1999 ANSI Standard.
Jan. 1, 1994 to May 15, 2000:
All electrical power transmission wiring located near or proposed to cross over aerial lifts shall comply with 5.2.1.2 Location of the B77.1-1992 ANSI Standard.
Nov. 1, 1991 to Jan 1, 1994:
All electrical power transmission wiring located near or proposed to cross over aerial lifts shall comply with 5.2.1.2 Location of the B77.1-1990 ANSI Standard.
Jan. 1, 1984 to Nov 1, 1991:
All electrical power transmission wiring located near or proposed to cross over aerial lifts shall comply with 5.2.1.2 Location of the B77.1-1982 ANSI Standard.
Prior to Jan. 1, 1984:
All exposed electrical power transmission wiring shall be so located that in case of collapse or breakage of the power line it will not come into contact with carriers, ropes, or passengers.
5.2.1.3 Protection.
Prior to May 15, 2006:
All transformer stations and other high voltage electrical equipment shall be marked with conspicuous warning signs and shall be protected so as to prevent unauthorized persons from entering the area or coming in contact with any portion of the equipment or wiring. All power equipment shall be protected against overloads by circuit breakers or fuses.
5.2.1.4 Overhead cables.
Prior to May 15, 2006:
Signal, communication, and control circuits may be supported between towers that support the aerial lift. Voltage on overhead or exposed circuits shall be limited to 50 volts with the exception of the intermittent ring-down circuits for telephone systems.
5.2.1.5.5 Ground fault interrupter protection.
Prior to May 15, 2006:
Not required.
5.2.2 Electrical system circuit design and classification.
Prior to May 15, 2006:
Not required.
5.2.9 Manual control devices
All automatic and manual stop and shutdown devices shall be of the manually reset type. An exception to this requirement is allowed for magnetic or optically operated automatic stop devices, if the operating circuit is such that it indicates that such devices initiated the stop and the circuit is of the manually reset type.
Manual stop switches (push button) shall be positively opened mechanically and their opening shall not be dependent upon springs.
Manual control devices shall be installed at all attendants’ and operators’ work positions, in machine rooms, and out-of-doors in proximity to all loading and unloading areas. As a minimum, each of these control locations shall include an Emergency Shutdown device. All manual control devices located in or on a control cabinet shall be mounted so that they are in the same plane or face of the cabinet. The control devices shall not be located in a position that would require the operator or attendant to pass through the path of moving carriers in order to operate the controls. All control devices shall be conspicuously and permanently marked with the proper function and color code.
5.2.10 Safety of operating and maintenance personnel.
Prior to May 15, 2006:
The sign “Personnel Working on Lift - Do Not Start” or a similar warning sign shall be hung on the main disconnect switch or at control points for starting the power unit(s) when persons are working on the aerial lift.
Provision shall be incorporated in the ropeway design to render the system inoperable when necessary for the Lock-out Tag-out protection of personnel working on the aerial lift.
5.3.1.2.1 Requirements for signs.
(a) The design of any sign as well as its support and the installation procedure of such sign shall be considered a minor modification if the sign or aggregate of signs on a given tower is greater than three feet square (nine square feet).
(b) Signs, fasteners, or supporting members shall not interfere with the operation of the tramway.
(c) The design of structural components shall be reviewed to consider the increase in loading caused by any sign.
(d) Signs shall not interfere with passenger or attendant vision.
5.3.1.3 Operational plan for transportation of recreational equipment. Each licensee shall have an operational plan that has procedures for transportation of sports equipment and recreational devices by foot passengers. This plan shall be consistent with the tramway manufacturer's specifications and instructions, if any.
Section 6 Tows Note: Timeframes relate to the ropeway installation date or modification date whichever controls, unless otherwise noted.
6.1.1.3.3 Location of power lines.
Jan, 1, 1977 to Present:
Power lines shall be located a minimum distance equal to the height of poles or support structures from any passenger tramway so that poles and electrical lines cannot touch any portion of the tramway, loading or unloading points or platforms and tow path, if applicable, upon collapse of poles or lines, unless suitable and approved precautions are taken to safeguard human lives.
6.1.1.3.4 Air space requirements.
May 15, 2000 to Present:
No passenger tramway installation shall be permitted to operate when a structure encroaches into the air space of the passenger tramway, defined as the area bounded by vertical planes commencing at a point thirty-five (35) feet from the intersection of the vertical planes of the ropes or cables and ground surface.
For purposes of this rule, buildings controlled by the licensee used primarily for maintenance and operation of the lift and other tramways shall not be considered structures; however, buildings must comply with the following.
No passenger tramway installation shall be permitted to operate when a structure encroaches into the air space of the passenger tramway, defined as the area bounded by planes having an outward slope of one horizontal and two vertical and commencing at a point twenty (20) feet horizontally outside of the intersection of the vertical planes of ropes or cables and ground surface Dec. 30, 1977 to Jan. 1, 1994:
No passenger tramway installation shall be permitted whenever the Passenger Tramway Operator does not have permanent and irrevocable control of the following air space (except when the passenger tramway is located on Forest Service land): the area bounded by planes having an outward slope of one horizontal and two vertical and commencing at a point twenty (20) feet horizontally outside of the intersection of the vertical planes of ropes or cables and ground surface Prior to Dec. 30, 1977:
Not required
Note: Timeframes stated for this rule define the air space requirements for each ropeway at the time when the encroachment was known to the area and DO NOT pertain to the installation date of the ropeway.
May 15, 2000 to Present:
Any cable or rope installed on or near a ropeway that may represent a hazard to the ropeway shall be monitored to automatically stop the ropeway if the cable or rope fails. Failure would be defined as per Section 23.1 (g).
EXCEPTION: Track or haul ropes are excluded from this rule. Prior to May 15, 2000:
Not required
6.2.1.1 Applicable codes.
May 15, 2000 to May 15, 2006:
All electrical systems shall comply with 6.2.1.1 Applicable codes of the B77.1-1999 ANSI Standard.
Jan. 1, 1994 to May 15, 2000:
All electrical systems shall comply with 6.2.1.1 Applicable codes of the B77.1-1992 ANSI Standard.
Nov. 1, 1991 to Jan 1, 1994:
All electrical systems shall comply with 6.2.1.1 Applicable codes of the B77.1-1990 ANSI Standard.
Jan. 1, 1984 to Nov 1, 1991:
All electrical systems shall comply with 6.2.1.1 Applicable codes of the B77.1-1982 ANSI Standard. Jan 1, 1977 to Jan. 1, 1984:
All electrical work shall comply with 6.2.1.1 Applicable codes of the B77.1-1976 ANSI Standard. Jan 1, 1974 to Jan. 1, 1977:
All electrical work shall comply with 6.2.1.1 Applicable codes of the B77.1-1973 ANSI Standard. Jan 1, 1972 to Jan 1, 1974:
All electrical work shall comply with 6.2.1.1 Applicable codes of the B77.1-1970 ANSI Standard. Prior to Jan 1, 1972:
All electrical work shall comply with 6.2.1.1 Applicable codes of the B77.1-1960 ANSI Standard.
6.2.1.2 Location.
May 15, 2000 to May 15, 2006:
All electrical power transmission wiring located near or proposed to cross over aerial lifts shall comply with 6.2.1.2 Location of the B77.1-1999 ANSI Standard.
Jan. 1, 1994 to May 15, 2000:
All electrical power transmission wiring located near or proposed to cross over aerial lifts shall comply with 6.2.1.2 Location of the B77.1-1992 ANSI Standard.
Nov. 1, 1991 to Jan 1, 1994:
All electrical power transmission wiring located near or proposed to cross over aerial lifts shall comply with 6.2.1.2 Location of the B77.1-1990 ANSI Standard.
Jan. 1, 1984 to Nov 1, 1991:
All electrical power transmission wiring located near or proposed to cross over aerial lifts shall comply with 6.2.1.2 Location of the B77.1-1982 ANSI Standard.
Prior to Jan. 1, 1984:
All exposed electrical power transmission wiring shall be so located that in case of collapse or breakage of the power line it will not come into contact with carriers, ropes, or passengers.
6.2.1.3 Protection.
Prior to May 15, 2006:
All transformer stations and other high voltage electrical equipment shall be marked with conspicuous warning signs and shall be protected so as to prevent unauthorized persons from entering the area or coming in contact with any portion of the equipment or wiring. All power equipment shall be protected against overloads by circuit breakers or fuses.
6.2.1.4 Overhead cables.
Prior to May 15, 2006:
Signal, communication, and control circuits may be supported between towers that support the aerial lift. Voltage on overhead or exposed circuits shall be limited to 50 volts with the exception of the intermittent ring-down circuits for telephone systems.
6.2.1.5.5 Ground fault interrupter protection.
Prior to May 15, 2006:
Not required.
6.2.2 Electrical system circuit design and classification.
Prior to May 15, 2006:
Not required.
6.2.9 Manual control devices
Manual control devices shall be installed at all attendants’ and operators’ work positions, in machine rooms, and out-of-doors in proximity to all loading and unloading areas. As a minimum, each of these control locations shall include an Emergency Shutdown device. All manual control devices located in or on a control cabinet shall be mounted so that they are in the same plane or face of the cabinet. The control devices shall not be located in a position that would require the operator or attendant to pass through the path of moving carriers in order to operate the controls. All control devices shall be conspicuously and permanently marked with the proper function and color code.
6.3.1.2.1 Requirement for signs.
(a) The design of any sign as well as its support and the installation procedure of each sign shall be considered a minor modification if the sign or aggregate of signs on a given tower is greater than three feet square (nine square feet).
(b) Signs, fasteners, or supporting members shall not interfere with the operation of the tramway.
(c) The design of structural components shall be reviewed to consider the increase in loading caused by any sign.
(d) Signs shall not interfere with passenger or attendant vision.
6.3.1.3 Operational plan for transportation of recreational equipment. Each licensee shall have an operational plan that has procedures for transportation of sports equipment and recreational devices by foot passengers. This plan shall be consistent with the tramway manufacturer's specifications and instructions, if any.
Section 7 Conveyors Note: Timeframes relate to the ropeway installation date or modification date whichever controls, unless otherwise noted.
7.2.1.1 Applicable codes.
May 15, 2000 to May 15, 2006:
All electrical systems shall comply with 8.2.1.1 Applicable codes of the B77.1-1999 ANSI Standard.
Jan. 1, 1994 to May 15, 2000:
All electrical systems shall comply with 6.2.1.1 Applicable codes of the B77.1-1992 ANSI Standard.
7.2.1.2 Location.
May 15, 2000 to May 15, 2006:
All electrical power transmission wiring located near or proposed to cross over aerial lifts shall comply with 8.2.1.2 Location of the B77.1-1999 ANSI Standard.
Jan. 1, 1994 to May 15, 2000:
All electrical power transmission wiring located near or proposed to cross over aerial lifts shall comply with 6.2.1.2 Location of the B77.1-1992 ANSI Standard.
7.2.1.3 Protection.
Prior to May 15, 2006:
All transformer stations and other high voltage electrical equipment shall be marked with conspicuous warning signs and shall be protected so as to prevent unauthorized persons from entering the area or coming in contact with any portion of the equipment or wiring. All power equipment shall be protected against overloads by circuit breakers or fuses.
7.2.1.5.5 Ground fault interrupter protection.
Prior to May 15, 2006:
Not required.
7.2.2 Electrical system circuit design and classification.
Prior to May 15, 2006:
Not required
7.2.3.3 Belt transition device.
Prior to May 15, 2006:
A belt transition stop device shall be provided. If an object continues to follow the belt past the belt transition stop device, the device shall move to relieve the pinch point and initiate the stop. As a minimum, the belt transition stop device shall have the following features:
7.2.9 Manual control devices
All automatic and manual stop and shutdown devices shall be of the manually reset type. An exception to this requirement is allowed for magnetic or optically operated automatic stop devices, if the operating circuit is such that it indicates that such devices initiated the stop and the circuit is of the manually reset type.
Manual stop switches (push button) shall be positively opened mechanically and their opening shall not be dependent upon springs.
Manual control devices that will initiate a stop shall be installed at all attendants' and operators' work position, in machine rooms, machine compartments, access points to crawl spaces, and out-of-doors in proximity to all loading and unloading areas.
All control devices shall be conspicuously and permanently marked with the proper function and color code.
Section 8 Reserved Section 9 Funiculars (ANSI B77.2-2004)
2.1.1.8 Internal combustion engine installation. This rule is superceded by ANSI B77.1-2006 Annex F Combustion engine(s) and fuel handling.
Section 10 Reserved Section 11 Reserved Section 12 Reserved Section 13 Reserved Section 14 Reserved Section 15 Reserved Section 16 Reserved Section 17 Reserved Section 18 Reserved Section 19 Reserved Section 20 Tramway Licensing
20.1 License Required.
A passenger Tramway not in compliance with these rules and regulations may be licensed if it has been granted the necessary exceptions pursuant to Section 1.2.3. Terms, conditions or requirements limiting any license may be imposed if reasonably necessary to effect compliance with these rules and regulations or to protect the safety of the public.
20.2 Issuance of license.
No license applied for shall be issued by the Board until it has received a letter from the area’s designated agent or appointed substitute designee stating that all the deficiencies listed in the inspection report have been corrected and the authority appointed by the Board has corroborated such letter. Such corroboration may be made by review of the above verified letter; subsequent inspection; the Board's own investigation; the receipt of additional documentation requested by the Board; or any other means which the Board or appointed authority deems appropriate. Such letter shall bear a recognizable signature, printed name, and title and be submitted as an original or transmitted by electronic means. The certificate shall be issued as soon as possible, but no later than seven (7) days after receipt of such letter, unless the Board has reasonable grounds to delay issuance and has given notice of such action and its reasons to the area operator affected prior to expiration of such seven (7) day period. The license, or copy thereof, shall be displayed prominently at the place where passengers are loaded.
20.3 Expiration of licenses.
Tramways are licensed during the fall licensing period or the spring licensing period as designated by the Board for one calendar year.
21.1 Definitions.
Design and construction verifications are required. A major tramway modification may be deemed a new installation by the Board and current requirements shall be applicable (reference rule 1.2.4.3).
21.2 Procedures prior to public operation for new and relocated Installations.
21.3 Procedures prior to public operation for tramways with major tramway modifications. In addition to the applicable requirements of Section 20 and rule 1.2, the following procedure shall be completed prior to public operation of the passenger tramway.
21.4 Procedures for tramways with minor modifications.
Each area operator's log of minor modifications shall be readily available to the Board's inspectors during every inspection.
21.5 Documentation of Minor Alterations.
Section 22 Inspections
22.1 Duty of the Area Operator.
22.2 Duty of the Board.
22.3 Required Inspections
Depending on the circumstances, the Board may reasonably require special procedures and conditions to be followed, including but not limited to, the following:
22.4 Inspection Procedures for Annual Licensing and Unannounced Inspections
Deficiencies stated in the annual unannounced inspection report and in any additional required inspection report(s) shall be remedied. A letter from the area’s designated agent or appointed substitute designee stating that all the deficiencies listed in the inspection report have been corrected, must be received by the Board office within twenty-eight (28) days from the completion of the inspection. Such letter shall bear a recognizable signature, printed name, and title and be submitted as an original or transmitted by electronic means.
Deficiencies stated in an acceptance test report(s) as required in 22.3.3.1 shall be remedied. A letter from the area’s designated agent or appointed substitute designee stating that all the deficiencies listed in the inspection report have been corrected, must be received and acknowledged by the Board office before the tramway can open for public operation. Such letter shall bear a recognizable signature, printed name, and title and be submitted as an original or transmitted by electronic means. The inspection completion date shall be noted on both the preliminary and final inspection report.
22.5 Qualified Inspectors
This policy is not intended per se to prohibit employees or members of an inspector's firm or company from doing work for an area operator, provided that disclosures of potential conflict are made and that appropriate measures are in place to ensure that the inspector is not involved in, or privy to, information concerning the work. Section 23 Passenger Tramway Incidents
23.1 Definitions.
For the purposes of this rule, the “unload zone” is defined is the area approaching the unload area where the vertical clearance is less than eight (8) feet. This is measured from the bottom of an open carrier to the terrain or snow surface.
23.2 Reporting to the Board
23.3 Limitation of Operation.
23.4 Logs - Components.
23.5 Logs - Stoppages.
This log shall be available for inspection and, if requested by the Board or its duly authorized representative, the area operator shall make copies available of the relevant records relating to any of the stoppages.
23.6 Logs - Loading, Unloading Incidents and Passengers Falling or Jumping from Lifts Area operators shall maintain a log which shall contain reports of all loading and unloading incidents in which injury occurs. This log shall also contain any incident in which a passenger falls or jumps from a chair with no injury, of which the area personnel has knowledge, that is outside the load or unload zone. For the purposes of this rule, the “load zone” and “unload zone” is defined in 23.1(b).
For each such fall or jumping incident, the log shall contain the following information:
This log shall be available for inspection and, if requested by the Board or its duly authorized representative, the area operator shall make copies available of the relevant records relating to any of the incidents.
Section 24 Rules of board procedure.
24.1 Declaratory orders.
Annex E Operator control devices (Normative)
Table E-1 – Device function and characteristics FUNCTION COLOR LABEL FEATURES Mushroom actuator with a Normal Stop RED STOP minimum diameter of 1-3/8 inches (38 mm)
Annex F Combustion engine(s) and fuel handling F.3.1 (c) Evacuation power unit.
Prior to December 2, 2002:
Not required.
F.4.1 Structural members used as fuel tanks.
Prior to October 15, 2001:
Not required.
F.4.4 Outside aboveground or underground fuel supply tanks. Prior to October 15, 2001:
Not required.
F.4.6 Provisions for internal corrosion.
Prior to October 15, 2001:
Not required.
F.4.7.3 Supply tanks.
Prior to October 15, 2001:
Not required.
F.4.10.11 Fill pipes.
Prior to October 15, 2001:
Not required.
Annex G Welded link chain G.1.1 Chain Specifications.
Prior to May 15, 2006:
Not required.
G.1.2 Breaking strength.
Prior to May 15, 2006:
Not required.
G.1.3 Test procedures.
Prior to May 15, 2006:
Not required.
G.1.4 Chain test reports.
Prior to May 15, 2006:
Not required.
_______________________________________________________________________________ Editor’s Notes History Sections 1, 24 eff. 05/01/2007.
Rule 24.1 eff. 05/01/2008.
Section 20, Rule 22.4 eff. 01/01/2009.
Rules 20.2, 22.4.4 eff. 07/01/2009.
Rule 22.3.4 eff. 11/01/2009.
Section 0.1, Rule 1.2.4.1, Sections 2, 3, 4, 5, 6, 7, Annexes E, F, G eff. 05/15/2010. Rule 3.1.3.3.2 eff. 05/15/2011.
Rules 0.1, 1.5 eff. 05/15/2012.
Rules 1.4, 2.1.1.11.2, 2.2.12, 2.3.5.5, 3.1.1.11.2, 3.2.9, 3.2.12, 3.3.5.5, 4.1.1.11.2, 4.2.9, 4.2.12, 4.3.5.5
Rule 4.3.4.3.1 eff. 07/01/2013; Annex E repealed eff. 07/01/2013. Rule 3.3.4.3.1 repealed eff. 05/15/2014.
Annex E eff. 07/01/2014.
Rule 0.1, Section 1.2.4.1 eff. 11/01/2014.
Rules 2.2.9, 3.2.9, 4.2.9, 5.2.9, 6.2.9, 7.2.9 eff. 05/01/2015. Rules 3.2.9, 4.2.9 eff. 11/01/2015.
Section 21 eff. 01/01/2016.
Rules 2.3.2.5, 3.3.2.5, 4.3.2.5 eff. 05/15/2017.