1. (a) Design and construction.

   1. (1)

      1. (A)

2. (i) All containers, except containers designed to operate under refrigerated or cryogenic conditions, in which liquefied petroleum gases are stored and/or transported or in which liquefied petroleum gases are placed for utilization through a liquefied petroleum gas system, shall be constructed to comply with the provisions of the latest edition of Section VIII, ASME Boiler Construction Code.

   1. (ii) All vessels shall be constructed for a safe working pressure of not less than two hundred fifty pounds per square inch gauge (250 psig).

      1. (iii) For motor fuel containers mounted on automobiles, buses, industrial and forklift trucks, see 15 CAR § 270-114(b)(1)(B).

      2. (B) Exceptions.

         1. (i) Vessels, except those designed to operate under refrigerated or cryogenic conditions, used for commercial fuel purposes located at cotton gins, rice dryers, and rice wells, and vessels used for any other stationary fuel purposes, underground installation where permitted, vessels used in connection with a vaporizer, and vessels used exclusively for the storage and/or transportation of butane, may be constructed for a safe working pressure of not less than one hundred twenty-five pounds per square inch gauge (125 psig).
         2. (ii) The safety valves on all containers must be set to start to discharge at the maximum allowable working pressure of the container.
         3. (iii) A plus ten percent (10%) tolerance will be permitted.
   2. (2) Blueprints showing the type or types of all containers shall be filed with the Liquefied Petroleum Gas Board for approval before shipment is made into the state.

   3. (3) Refrigerated or cryogenic storage of liquefied petroleum gases.

      1. (A) All plans and specifications covering the storage of liquefied petroleum gases aboveground or underground under refrigerated or cryogenic conditions shall be submitted to the Liquefied Petroleum Gas Board for review and approval prior to installation.
      2. (B) The location or site for the storage of liquefied petroleum gases aboveground or underground under refrigerated or cryogenic conditions shall be examined and approved by a representative of the Liquefied Petroleum Gas Board prior to installation.

3. (b) Shop inspection shall be made of all containers during construction by a duly authorized inspector who:

   1. (1) Holds a National Board Commission; and

   2. (2) Is employed by an insurance company, state, or municipality.

      1. (c) Exception.

   3. (1)

      1. (A) Small containers of thirty (30) water gallon capacity, or less, may be constructed to comply with the regulations of the United States Department of Transportation (DOT) covering containers used for the storage of liquefied petroleum gases.

      2. (B)

         1. (i) Such containers shall be:
4. (a) (a) Constructed for a pressure of not less than two hundred forty pounds per square inch (240 psi); and

5. (b) (b) Used only for the storage of a liquefied petroleum gas mixture known as propane.

   1. (ii) These small containers shall be filled only by weight at approved central filling stations, the amount of gas placed in a container to be determined by weighing in accordance with the appropriate densities given in Table 4 of this part, United States Department of Transportation (DOT), formerly Interstate Commerce Commission (ICC).

   2. (2)

      1. (A) Larger DOT containers are approved for domestic use but must be filled on the customer's premises.

      2. (B)

         1. (i) DOT containers larger than thirty (30) water gallon capacity are not to be transported for filling.
         2. (ii) These stationary DOT containers must be set the proper distance from a building according to the distance chart outlined in this part.
   3. (3) All DOT cylinders using liquefied petroleum gases shall be maintained and inspected in compliance with DOT requirements (for location of bottle filling plants, see 15 CAR § 250-117).

   4. (4)

      1. (A) DOT forklift cylinders may be filled by volume rather than weight if so equipped and designed for filling by volume as outlined in NFPA 58.

      2. (B) The volumetric method shall be permitted to be used for the following containers if designed and equipped for filling by volume:

         1. (i) DOT specifications cylinders of less than two hundred pounds (200 lbs.), or ninety-one kilograms (91 kg), water capacity that are not subject to United States Department of Transportation jurisdiction (such as, but not limited to, motor fuel containers on vehicles not in interstate commerce or cylinders filled at the installation);
         2. (ii) DOT specification cylinders of two hundred pounds (200 lbs.), or ninety-one kilograms (91 kg), water capacity or more (see United States Department of Transportation regulations requiring spot weight checks);
         3. (iii) Cargo tanks or portable tank containers complying with United States Department of Transportation Specifications MC-330, MC-331, or DOT 51; and
         4. (iv) ASME and API-ASME containers complying with the latest edition National Fire Protection Association Pamphlet No. 58.

      3. (C)

         1. (i) When the volumetric method is used, it shall be in accordance with the following:

6. (a) (a) If a maximum fixed liquid level gauge, or a variable liquid level gauge without liquid volume temperature correction is used, the liquid level indicated by these gauges must be computed on the basis of the maximum permitted filling density when the liquid is at:

   1. (1) (1) Forty degrees Fahrenheit (40° F) or four and four-tenths degrees Celsius (4.4° C) for aboveground containers; or
   2. (2) (2) Fifty degrees Fahrenheit (50° F) or ten degrees Celsius (10° C) for underground containers;

7. (b) (b) When a variable liquid level gauge is used and the liquid volume is corrected for temperature, the maximum permitted liquid level shall be in accordance with Table 4; and

   1. (c) (c) Containers with a water capacity of two thousand (2,000) gallons, seven and six-tenths meters (7.6 m), or less, filled at consumer sites, shall be gauged in accordance with the following:
   2. (1) (1) The variable gauge shall have been checked for accuracy by comparison with the liquid level indicated by the fixed maximum liquid level gauge; and

   3. (2) (2) If the container is to be filled beyond the level indicated by the fixed maximum liquid level gauge, the reading of the variable gauge, adjusted for the error indicated by the check with the fixed maximum liquid level gauge, shall be corrected for the liquefied petroleum gas liquid temperature.

      1. (ii) Exception. Containers fabricated on or before December 31, 1965, shall be exempt from this provision.

         1. (iii) When containers are to be filled volumetrically by a variable liquid level gauge, provisions shall be made for determining the liquid temperature.
      2. (D) Filling of DOT forklift cylinders from a delivery truck is prohibited.

   4. (5) Transportation of DOT cylinder.

      1. (A) Containers having an individual water capacity not exceeding forty-five pounds (45 lbs.) (liquefied petroleum gas capacity) transported in open vehicles may be transported in other than the upright position.
      2. (B) One-hundred-pound (liquefied petroleum gas capacity) cylinders shall not be transported in the trunk of an automobile or in any vehicle unless it can be transported in an upright manner with the vapor space in communication with the safety relief device.

      3. (C)

         1. (i) All cylinders with a capacity of over forty pounds (40 lbs.) of propane that are not fitted with an OPD valve must be transported and stored with a POL plug.
         2. (ii) Cylinder valves requiring maintenance that are fifteen (15) years or older must be replaced.
         3. (iii) Liquefied Petroleum Gas Board-approved signage must be displayed in a prominent location.
         4. (iv) Permit holders must use the Liquefied Petroleum Gas Board-approved form to report new and existing station locations.
         5. (v) Class 1 and Class 3 permit holders will provide Liquefied Petroleum Gas Board-approved training for exchange station employees.
         6. (vi) Record of such training will be transmitted to the Liquefied Petroleum Gas Board office.
         7. (d)

   5. (1) All containers shall have the manufacturer's name plate firmly attached to the container, designating the:

      1. (A) Manufacturer’s serial number;
      2. (B) Maximum allowable working pressure;
      3. (C) Year built;
      4. (D) Diameter and length;
      5. (E) Shell and head thickness; and
      6. (F) Capacity in water gallons.

   6. (2)

      1. (A) On underground containers, the manufacturer's name plate shall also be attached in a firm manner in the dome cover, as well as on the tank itself.
      2. (B) See also subsection (i) of this section, the “Fit for Service” subsection regarding replacement name plates.

8. (e)

   1. (1) All containers, except storage, shall be fully equipped by the manufacturer with the required fittings, and all connections tested under air pressure of not less than seventy-five pounds per square inch gauge (75 psig).
   2. (2) Air pressure of not less than twenty-five pounds per square inch gauge (25 psig) or more than seventy-five pounds per square inch gauge (75 psig) shall be left in the container when shipment is made into the state by the manufacturer or jobber, and this information shall be included in the report of shipment provided for in subsection (f) of this section.
9. (f) Manufacturers and jobbers shall forward to the board notice of shipment and manufacturer's data report, together with the applicable fee, for each container on the same day that shipment of container is made into the state.

10. (g)

    1. (1) All containers constructed for domestic, fuel, or commercial use, equipped with liquid and vapor outlets, shall have the liquid and vapor outlets plainly marked with the words "LIQUID" and "VAPOR" on a permanent plate in letters not less than three-sixteenths inch (3/16”) in height.

    2. (2) This plate is to be attached to the:

       1. (A) Tank as near the liquid and vapor outlet valves as possible; or
       2. (B) Valve connections at the time the valves are installed.

    3. (3) When a connection is provided for liquid transfer purposes, this connection must be equipped with both:

       1. (A) An excess flow check valve; and
       2. (B) A liquid shutoff valve.

11. (h)

    1. (1) Containers with foundations attached (portable or semiportable containers with suitable steel runners or skids, popularly known in the industry as "skid tanks") shall be equipped with skids not less than two inches (2”) or more than twelve inches (12”) below the outside bottom of the container shell.

    2. (2) When connected to the piping, and not permanently located on fire resisting foundations, such connections shall be sufficiently flexible to minimize the possibility of breakage or leakage of connections if container:

       1. (A) Settles;
       2. (B) Moves; or
       3. (C) Is otherwise displaced.
    3. (3) Skids, or lugs for attachment of skids, shall be secured to container in accordance with the State Liquefied Petroleum Gas Board Code or rules under which the container is designed and built, with a minimum factor of safety of four (4), to withstand loading in any direction equal to four (4) times the weight of the container and attachments filled to the maximum permissible loaded weight.

    4. (4) Field welding where necessary shall be made only on saddle plates or brackets which were applied by the manufacturer of tank.

       1. (i) “Fit for Service” designation. As set out below, certain containers that have a missing name plate may be placed back into service if they meet the following criteria:
    5. (1) All containers with missing name plates must be certified “Fit for Service” using Liquefied Petroleum Gas Board-approved inspection methodology;
    6. (2) All entities seeking to inspect and designate “Fit for Service” containers must be approved and permitted by the Liquefied Petroleum Gas Board;

    7. (3)

       1. (A) Storage containers allowed under “Fit for Service” are limited in size from five hundred water gallons (500 w.g.) up to one thousand water gallons (1000 w.g.).
       2. (B) This limitation does not apply to large bulk storage located at permit holders’ bulk plant; and

    8. (4) “Fit for Service” containers can be used only in the agricultural industry and for the following purposes:

       1. (A) Provide fuel to field irrigation units;
       2. (B) Provide fuel for commercial livestock operations;
       3. (C) Provide fuel for crop drying; and
       4. (D) Other agricultural applications as may be brought before the Liquefied Petroleum Gas Board for consideration.

Codification Notes: “API-ASME” means American Petroleum Institute-American Society of Mechanical Engineers. "ASME" means American Society of Mechanical Engineers. "OPD" means overfill protection device.