Ind. Admin. Code tit. 355, r. 3-6-4 – Container valves and appurtenances

Sec. 4. (a) All containers shall be equipped with a fixed liquid level gauge.

(b) All containers with a capacity of two hundred fifty (250) gallons or more shall be equipped with a pressure-indicating gauge having a dial graduated from zero (0) to four hundred (400) psig.

(c) The filling connection shall be fitted with an approved positive shutoff valve in conjunction with either an internal back-pressure check valve or an internal excess flow valve.

(d) All containers with a capacity of two hundred fifty (250) gallons or more shall be equipped with an approved shutoff vapor valve.

(e) All vapor and liquid connections, except pressure relief valves and those specifically exempted in 355 IAC 3-2-5(c) and 355 IAC 3-2-5(d), shall be equipped with approved excess flow valves or may be fitted with approved quick-closing internal valves, which, except during operating periods, shall remain closed.

(f) Fittings shall be adequately protected from physical damage by means of a rigid guard designed to withstand static loading in any direction equal to twice the weight of the container and lading using a safety factor of four (4) based upon the ultimate strength of the material used. If the guard encloses the pressure relief valve, the valve shall be properly vented through the guard. The design of the roll cage shall prevent pockets of standing water or ice that might pit or erode any portion of the container, valves, gauges, or appurtenances. The following are requirements for containers:

(1) Containers with head mount roll cages used for the field application of ammonia shall have roll cage protection extending three hundred sixty (360) degrees in the vertical plane transverse to the direction of application such that all valves, gauges, and appurtenances, including any attached hose end valve, nozzle, and hose fitting, are protected from physical impact by the tongue of the wagon (running gear) striking said valves, gauges, and appurtenances, including instances whereupon the tongue may be deformed around the front head of the container.
(2) For nurse tank containers constructed with recessed domes for vapor relief or other valves, the wall thickness of the domes shall be measured every ten (10) years by properly equipped personnel, qualified to perform nondestructive examination, in order to determine if the wall thickness has deteriorated to an unsafe condition. If testing determines that repair or alteration has become necessary, it shall be done in accordance with the National Board Inspection Code, by a firm holding a valid Certificate of Authorization to use the Repair Symbol from the National Board of Boiler and Pressure Vessel Inspectors. The repair or alteration shall be completed in accordance with 355 IAC 3-2-2(b).

(g) If a liquid withdrawal line is installed in the bottom of a container, the connections thereto, including the hose, shall not be lower than the lowest horizontal edge of the wagon or trailer axle.

(h) Provision shall be made to secure both ends of the hose while in transit.

(State Chemist of the State of Indiana; Agricultural Ammonia PT A, Sec VI, Rule 6.3; filed Dec 30, 1965, 2:15 p.m.: Rules and Regs. 1966, p. 19; filed Jan 19, 2001, 2:04 p.m.: 24 IR 1641; errata filed Apr 24, 2001, 9:06 a.m.: 24 IR 2709; readopted filed Jun 20, 2001, 3:22 p.m.: 24 IR 3822; readopted filed Apr 27, 2007, 2:03 p.m.: 20070509-IR-355070039RFA; readopted filed Nov 25, 2013, 3:27 p.m.: 20131225-IR-355130482RFA; readopted filed Jul 2, 2019, 10:42 a.m.: 20190731-IR-355190258RFA; readopted filed Nov 4, 2025, 2:37 p.m.: 20251119-IR-355240619RFA)