Indiana Administrative Code › Title 355 - STATE CHEMIST OF THE STATE OF INDIANA › Article 3 - AGRICULTURAL AMMONIA › Rule 2 - Basic Rules › Section 2-6 - Piping, tubing, and fittings; construction

Current through July 10, 2024
Authority: IC
				  15-16-1-6;
				  IC
				  15-16-1-7
Affected: IC
				  15-16-1-10;
				  IC
				  15-16-1-11
Sec. 6.
(a) All
				piping, tubing, and fittings shall be made of steel or other material suitable
				for anhydrous ammonia d service. Brass, copper, or galvanized steel pipe or
				tubing shall not be used.
(b)
				Piping used on nonrefrigerated systems shall be at least ASTM A53 Grade B
				seamless or Electric Resistance Welded Pipe. Pipe joints shall be threaded,
				welded, or flanged. Pipe shall be at least Schedule 40 when joints are welded
				or welded and flanged. Pipe shall be at least Schedule 80 when joints are
				threaded. Threaded nipples shall be seamless. Welding shall be done by a welder
				certified in accordance with the ASME Code, Section IX, "Welding
				Qualifications". Tubing joints shall be made up with flared, flareless, or
				compression type fittings complying with ANSI/ASE J513, ANSI/ASME B31.1, or
				ANSI/ASME B31.5. Standards refer to current amendments and latest edition of
				the same.
(c) All pipe lines shall
				be installed as nearly as possible in a straight line with a minimum amount of
				pipe and shall not be restricted by an excessive number of tees or
				elbows.
(d) Rigid connections, or
				all metal flexible connections with a bursting pressure of one thousand (1,000)
				psig, shall be used for permanent installation. Flexible connections shall be
				installed and used in accordance with the manufacturer's recommendations. For
				temporary installations, hose meeting the requirements of this rule may be
				used. Piping between the tank discharge nozzle and primary pump suction of
				refrigerated storage systems is exempt from this subsection.
(e) Adequate provisions shall be made to
				protect all exposed piping from physical damage that might result from impact
				by moving machinery, automobiles, or trucks or any other undue strain that may
				be placed upon the piping.
(f)
				After assembly, all piping, fittings, and tubing shall be tested and proved to
				be free from leaks at a pressure not less than the normal operating pressure of
				the system.
(g) All piping, tubing,
				and fittings shall be designed for a pressure no less than the maximum pressure
				to which they may be subjected in service.
(h) All piping shall be supported in
				accordance with good piping practices, and provisions shall be made as
				necessary for expansion, contraction, impact, vibration, and settling. All
				piping should conform to ANSI/ASME B31.3, Process Piping, except ANSI/ASME
				B31.5, Refrigeration Piping shall be used for refrigeration piping systems
				within its scope. Standards refer to current amendments and latest edition of
				the same.
(i) Cast iron fittings
				shall not be used. Those parts of valves that are subjected to gas pressure
				should be made of steel, ductile (nodular) iron, or malleable iron. Valves, in
				this case, include the following:
(1) Shutoff
				valves.
(2) Excess flow
				valves.
(3) Back pressure check
				valves.
(4) Emergency shutoff
				valves.
(5) Remotely controlled
				valves.
Ductile iron shall meet the requirements of ANSI/ASTM A395,
				  and malleable iron shall meet the requirements of ANSI/ASTM A47. Standards
				  refer to current amendments and latest edition of the same.