Fixed tube liquid-level gages shall be designed and installed to indicate that level at which the container is filled to 85 percent of its water capacity in gallons. Refrigeration plants where ammonia is used solely as a refrigerant. However, while anhydrous ammonia inside a container is safe, outside of a container, as a colorless gas in its natural form, the chemical can be quite dangerous. On the discharge side of the pump, before the relief valve line, there shall be installed a pressure gage graduated from 0 to 400 p.s.i. The resources below include safety measures and the state requirements for storage of NH3. z may be any sharply contrasting color. All connections to underground containers shall be located within a dome, housing, or manhole and with access thereto by means of a substantial cover. Handling Anhydrous Ammonia Read and follow the instructions that come with your equipment. Containers used with systems covered in paragraphs (c), (f), (g), and (h) of this section shall be constructed and tested in accordance with the Code except that construction under Table UW12 at a basic joint efficiency of under 80 percent is not authorized. Positive displacement pumps shall have, installed off the discharged port, a constant differential relief valve discharging into the suction port of the pump through a line of sufficient size to carry the full capacity of the pump at relief valve setting, which setting and installation shall be according to the pump manufacturer's recommendations. The vent lines shall be installed to prevent accumulation of liquid in the lines. Threaded connections shall not be back-welded. … When anhydrous ammonia comes in contact with any moisture, the water and ammonia rapidly combine. Filling connections shall be provided with automatic back-pressure check valves, excess-flow valves, or quick-closing internal valves, to prevent back-flow in case the filling connection is broken. (This requirement does not apply to farm vehicles used for the application of ammonia as covered in paragraph (h) of this section.). 64 The area within 25 feet of a storage tank exceeding 200 Imperial gallons, a loading or unloading rack, pump, building, etc. Every container shall be supported to prevent the concentration of excessive loads on the supporting portion of the shell. Each compressor shall have its individual driving unit. All automatic controls shall be installed in a manner to preclude operation of alternate compressors unless the controls will function with the alternate compressors. Overview of air permitting requirements and options for new anhydrous ammonia storage and handling operations. The applicator tank may be filled by venting to open air provided the bleeder valve orifice does not exceed seven-sixteenths inch in diameter. Tubing made of brass, copper, or other material subject to attack by ammonia shall not be used. Horizontal aboveground containers shall be so mounted on foundations as to permit expansion and contraction. F. or gallons, U.S. Standard. Anhydrous ammonia - Storage and handling: AS/NZS 2022:2003 AMDT 1: Anhydrous ammonia - Storage and handling: AS/NZS 2022-2003: Anhydrous ammonia - Storage and handling: AS/NZS 2022-2003 AMDT 1: Anhydrous ammonia - Storage and handling At lower concentrations, ammonia gas is irritating to the eyes, skin, and mucous membranes of the nose, throat, and lungs. Storage of ammonia and handling it is not easy. working pressure. Adequate protection against flotation or other water damage shall be provided wherever high flood water might occur. The weak roof-to-shell seam is not to be considered as providing any of the capacity required in (a) of this subdivision. While the guidelines for ammonia usage do not apply to those involved with its transport, drivers who transport anhydrous ammonia should still be adequately trained in understanding ammonia and any problems that might arise from a portable ammonia system. Aboveground uninsulated containers may be charged 87.5 percent by volume provided the temperature of the anhydrous ammonia being charged is determined to be not lower than 30 deg. Anhydrous Ammonia Pumped into Propane Storage Tanks, October 21,1999 Two 30,000-gallon propane tanks, each at seventy percent capacity were accidentally topped off with anhydrous ammonia. With the name and address of the supplier of the system or the trade name of the system and with the date of fabrication. The refrigeration system shall be arranged with suitable controls to govern the compressor operation in accordance with the load as evidenced by the pressure in the container(s). Anhydrous ammonia (ammonia)1 is an industrial and commercial compound with ever increasing popularity in a multitude of applications. F. and 130 deg. Load imposed by heat flow into the container caused by maximum sun radiation. All foundations shall extend below the frost line. Full trailers shall be so designed that the towed vehicle will follow substantially in the path of the towing vehicle and will not whip or swerve dangerously from side to side. Hose assemblies, when made up, shall be capable of withstanding a test pressure of 500 p.s.i.g. Tanks valves should be replaced or tested every 5 years and tank owners should keep records to support this data. Containers with a design pressure of 15 p.s.i.g. A suitable "stop" or "stops" shall be mounted on the vehicle or on the container in such a way that the container shall not be dislodged from its mounting due to the vehicle coming to a sudden stop. Provisions for unloading tank cars shall conform to the applicable recommendations contained in the DOT regulations. This site uses Akismet to reduce spam. F. and 130 deg. Compressors used for transferring or refrigerating ammonia shall be recommended for ammonia service by the manufacturer. for plumbing multi-tank anhydrous ammonia systems have been developed by a coalition of state government, academia and industry representatives. Signs shall be of metal or other suitable material, at least 12 by 15 inches in size and bear the words "STOP - Tank Car Connected" or "STOP - Men at Work" the word, "STOP," being in letters at least 4 inches high and the other words in letters at least 2 inches high. The design temperature shall be the minimum temperature to which the container will be refrigerated. The provisions of subdivision (i) of this subparagraph shall not be construed as prohibiting the continued use or reinstallation of containers constructed and maintained in accordance with the 1949, 1950, 1952, 1956, 1959, and 1962 editions of the Code or any revisions thereof in effect at the time of fabrication. With the wall thickness of the shell and heads. Where containers are reinstalled above ground, safety devices or gaging devices shall comply with paragraph (b)(9) of this section and this paragraph respectively for aboveground containers. 1.3.4 Depot A stationary anhydrous ammonia storage system, including the container or containers, container fittings and the ancillary equipment essential for … The document shall be signed by a registered professional engineer or other person having special training or experience sufficient to permit him to form an opinion as to safety of the unit involved. 3], EN 14620 [Ref. Made for you. Pipe shall be Schedule 80. how to mark your ammonia tank - 2011 edition office of indiana state chemist page 2 marking of stationary equipment - ammonia storage tanks : required types of markings : ' caution ammonia' or ' anhydrous ammonia' : z must be in lettering at least 6" tall. 60 drill-size opening to allow equalization of pressures. The filling connection shall be fitted with combination back-pressure check valve and excess-flow valve; one double or two single back-pressure check valves; or a positive shutoff valve in conjunction with either an internal back-pressure check valve or an internal excess flow valve. A cylinder or tank specifically designed and constructed for the storage or transport of anhydrous ammonia. The shell or head thickness of any container shall not be less than three-sixteenth inch. This document is available on the ANSI Webstore. Containers shall be gaged and charged only in the open atmosphere or in buildings or areas thereof provided for that purpose. ººº z may be stenciled if desired. All vehicles shall carry a can containing 5 gallons or more of water. This distance shall be measured from the gauge side of the nearest rail to the nearest point on the tank shell. Some of these new laws are effective immediately and some have a due date as soon as 2020. Underground containers shall be set on a firm foundation (firm earth may be used) and surrounded with earth or sand well tamped in place. "Farm vehicle" (implement of husbandry) - A vehicle for use on a farm on which is mounted a container of not over 1,200 gallons water capacity. Excess flow valves where required by these standards shall close automatically at the rated flows of vapor or liquid as specified by the manufacturer. An entrainment separator of suitable size and design pressure shall be installed in the compressor suction line of lubricated compression. Means shall be provided to protect hoses while the vehicle is in motion. Such pipe shall be at least schedule 40 when joints are welded, or welded and flanged. The maximum allowable water level to which the container may be filled for test purposes. Hose used in ammonia service shall conform to the joint Agricultural Ammonia Institute - Rubber Manufacturers Association Specifications for Anhydrous Ammonia Hose. 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