Section 7-12-01-05 - Specific requirements for nonrefrigerated anhydrous ammonia storage facilities1.Facility siting requirements:a. The siting of the facility must comply with North Dakota Century Code section 4.1-37-05 and this compliance must be verified by the agriculture commissioner.b. The facility must be properly licensed by the board of county commissioners in which the facility is located and by the agriculture commissioner.c. The facility must be accessible to emergency vehicles at all times.d. A facility identification sign must be displayed stating the name, the 911 address, and telephone number of the nearest representative, agent, or owner. An emergency telephone number must also be displayed. This sign must be posted near the entrance of the facility. Letters must be at least two inches [50.8 millimeters] high, and the sign visible from no less than fifty feet [15.24 meters].2.Storage container requirements:a. The ASME manufacturer's data report must be provided when requested by the agriculture commissioner should repairs, alterations, or metallurgical data be required.b. The container must be ASME constructed, if installed after November 1, 1987.c. The container must be national board registered, if installed after November 1, 1987. For secondhand and reinstalled storage containers, a manufacturer's data report must be furnished to the agriculture commissioner if the container is not national board registered.d. The condition of the paint shall be such that no more than ten percent of the tank surface is corroded or missing paint.e. Container markings and/or decals must meet the requirements of ANSI/CGA G-2.1.f. Postconstruction repairs and alterations, if made, must meet the requirements of the national board inspection code and the proper documentation must be available for inspection if requested by the agriculture commissioner.g. Container fittings, nozzles, and welded seams must be in compliance with the code of construction as judged by the requirements of the national board inspection code.h. Supports and saddles adequately must support the container as required by ANSI/CGA G-2.1, and there must be no concentration of excessive loads on the supporting portion of the shell.i. A container liquid level gauge must be installed and be operable.j. A pressure gauge graduated from zero to four hundred pounds per square inch [0 to 2760 kilopascals] and designated for use in anhydrous ammonia service must be installed on the container.k. Safety valve manifolds meeting the requirements of ANSI/CGA G-2.1 must be installed between the container and the safety valves required to be installed.l. Container safety valves must be ASME and national board stamped.m. Container safety valves must be date current and in operable condition.n. Container safety valves must have rain caps in place.o. Installed safety valve capacity must comply with appendix B of ANSI/CGA G-2.1. The installed capacity must be sufficient with a manifold or manifolds in operation as designed by the manufacturer.3.Requirements for piping and appurtenances:a. Excess flow valves must be installed at all tank openings, or in lieu thereof, approved quick-closing internal valves may be installed which, except during operating periods, must remain closed.b. Main stop valves must be labeled for anhydrous ammonia service and be in good operating condition.c. Main stop valves must be labeled or color coded to indicate liquid or vapor service.d. System piping must be at least schedule 40 where welded and schedule 80 where threaded. Threaded and seal welded connections must be at least schedule 80. Piping must be at least ASTM A-53 grade B seamless or electric resistance welded (ERW) pipe. ASTM A-53 type F piping is prohibited.e. Welded piping must be welded by an ASME section IX certified welder, and proof of the certification must be available if requested by the agriculture commissioner.f. Threaded piping must not be used underground for new installations.g. Pipe and pipe fittings must not be cast iron, brass, copper, zinc, or galvanized.h. Flexible fittings or expansion joints, or both, must be used where necessary.i. Underground piping must be installed using approved corrosion protection.j. For new systems, the system piping must be pneumatically or hydraulically pressure tested to 1.1 times the design pressure of the system and the integrity of the system proven. A written report of the testing must be retained for a minimum of five years and be furnished to the agriculture commissioner upon request. Underground piping shall be evaluated at a minimum of every five years to ensure leak tightness. To perform the leak test, the underground piping must be isolated and pressurized to two hundred pounds per square inch. The test pressure of two hundred pounds per square inch must be maintained for a minimum of ten minutes. A report of the leak test must be retained for at least five years and furnished to the agriculture commissioner upon request. All tests must be performed with a calibrated gauge.k. Approved bulkheads or breakaways, or both, must be provided at nurse tank fill stations. Emergency shutoff valves must be in place on liquid and vapor piping before the bulkhead or breakaways, or both. Approved cables must be connected to the emergency shutoff valves and these cables can be activated both at the valves and at a remote location. Breakaway action will close the valves.l. Approved bulkheads or breakaways or both must be provided at truck unloading stations. There must be an emergency shutoff valve on the vapor piping on the system side of the bulkhead and a backcheck valve is installed on the liquid piping on the system side of the bulkhead. Approved cables must be connected to the emergency shutoff valve and these cables can activate the valve both at the valve and at a remote location.m. Date current hydrostatic relief valves must be installed wherever liquid may become trapped between closed valves.n. Transfer hoses must be date current and not be weather checked or cut to expose the cords and must comply with all provisions of ANSI/CGA G-2.1 except provision 5.7.10.o. Transfer pump, if used, must be rated for anhydrous ammonia service.p. A pressure gauge graduated from zero to four hundred pounds per square inch [0 to 2760 kilopascals] and designated for use in anhydrous ammonia service must be installed on the discharge side of the pump, before the bypass piping loop. This gauge must be a liquid filled gauge.q. Compressors, if used, must be rated for anhydrous ammonia service.r. Approved pressure gauges and stop valves must be installed on the suction and discharge sides of the compressor.s. An approved date current pressure relief valve of sufficient capacity must be installed on the discharge side of the compressor prior to any shutoff valve.t. Locks and lock boxes must be installed on the main system stop valves, when the facility is unattended.u. The system must be leak free in operation.v. Adequate provisions for protection of exposed piping and appurtenances from moving vehicles at the facility must be in place.w. Loading platforms or other equivalent method must be used to allow safe filling of nurse tanks. Climbing on tires is not permitted for filling nurse tanks.x. Bleeder valves must be installed at truck unloading stations to relieve pressure prior to connecting or disconnecting the truck transfer hoses. The bleeder hoses must be vented to a suitable closed water container.y. Excess flow protection is required for nurse tank filling station risers to shut down ammonia flow should a transfer hose break or a pull-away occur. Storage facilities utilizing bulkheads with emergency shutoff valves below the bulkhead must install the required excess flow valves integral with the riser shutoff valves or as in-line excess flow valves. For these systems, an approved installed location cable must be used between the emergency shutoff valve actuator and the riser shutoff valve. Storage facilities utilizing breakaway devices with positive closure must install excess flow valves integral with the riser shutoff valve or as an approved in-line excess flow valve installed prior to the positive closure device. The installer must verify the operation of any excess flow valve covered by this section. 4.Requirements for safety equipment:a. The following personal safety equipment must be available at a readily accessible location: (1) A minimum of two emergency escape-only respirators shall be provided at a prominent and marked location at the storage facility. The escape-only respirator and training must be in compliance with title 29 Code of Federal Regulations part 1910.134 section 12;(2) One pair of protective gloves impervious to ammonia for each of the maximum number of employees that may be storing, handling, transferring, or otherwise working with anhydrous ammonia at the same time, plus one spare pair;(3) Chemical splash goggles or chemical splash goggles with full-face shield to be worn over the goggles for each of the maximum number of employees that may be storing, handling, transferring, or otherwise working with anhydrous ammonia at the same time, plus at least one spare pair;;(4) One pair of protective boots impervious to ammonia;(5) One "slicker suit" impervious to ammonia;(6) Safety shower or open top container holding at least one hundred fifty gallons [567.8 liters] of clean water; and(7) One class C fire extinguisher or class C-compatible fire extinguisher.b. A telephone, or other method of communication, is required to be on location at each anhydrous ammonia storage facility during transfer operations.N.D. Admin Code 7-12-01-05
Effective July 1, 1996; amended effective April 1, 1998; June 1, 2005; April 1, 2013.Amended byAdministrative Rules Supplement 2020-377, July 2020, effective 7/1/2020.General Authority: NDCC 4.1-37-01
Law Implemented: NDCC 14.1-37-01