(e) All cold formed heads of ferrous material used on NH(3) tanks shall be treated in accordance with paragraph UCS-56 of the ASME Code, regardless of the thickness of the metal when the tanks are to be used for transportation of anhydrous ammonia or for the storage of anhydrous ammonia. A relief valve large enough to discharge the full capacity of the compressor shall be connected to the discharge before any shutoff valve. 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. Gage glasses of the columnar type shall be restricted to stationary storage installations. Every full trailer or semitrailer shall have a reliable system of brakes, and adequate provision shall be made to operate the brakes from the driver's seat. Back slippage shall also be prevented by proper methods. Creating opportunity through more effective, more efficient, and customer focused State Government. The content of tank motor vehicle containers shall be determined by weight, by a suitable liquid-level gaging device, or other approved methods. Terminal storage tanks refrigerate ammonia to minus 28 degrees Fahrenheit. Excess flow and back pressure check valves where required by the standards in this section shall be located inside of the container or at a point outside as close as practicable to where the line enters the container. The discharge from safety-relief valves shall be vented away from the container upward and unobstructed to the atmosphere. F. except on containers provided with fixed level indicators, such as fixed length dip tubes, or containers that are filled with weight. Compressors shall be equipped with manually operated shutoff valves on both suction and discharge connections. Tanks valves should be replaced or tested every 5 years and tank owners should keep records to support this data. DOT specifications - Regulations of the Department of Transportation published in 49 CFR Chapter I. Anhydrous ammonia (ammonia)1 is an industrial and commercial compound with ever increasing popularity in a multitude of applications. In lieu of this requirement the same information may be contained on a nameplate permanently attached to the hose. - Tank markings required for nurse tanks of anhydrous ammonia: DOT 1005 placards (4 sides); "Inhalation Hazard" decal with 2-inch lettering (2 sides); "Anhydrous Ammonia" with 2-inch lettering (4 sides). Occupational Safety & Health Administration. All containers with a capacity exceeding 250 gallons shall be equipped with a pressure gage having a dial graduated from 0-400 p.s.i. All container openings, except safety relief valves, liquid-level gaging devices, and pressure gages, shall be labeled to designate whether they communicate with liquid or vapor space. The compressor shall not be operated if either pressure gage is removed or is inoperative. Maximum load imposed by filling the container with ammonia warmer than the design storage temperature. All trailers shall be securely attached to the vehicle drawing them by means of drawbars supplemented by suitable safety chains. The container, prior to being placed under ground, shall be given a corrosion resisting protective coating. Each container except those filled by weight shall be equipped with an approved liquid-level gaging device. 54 drill-size opening need not be equipped with excess flow valves. Storage areas shall be kept free of readily ignitable materials such as waste, weeds, and long dry grass. An emergency alarm and shutoff shall be located in the condenser system to respond to excess discharge pressure caused by failure of the cooling medium. Container safety-relief valves shall be set to start-to-discharge as follows, with relation to the design pressure of the container: Each container safety-relief valve used with systems covered by paragraphs (c), (f), (g), and (h) of this section shall be plainly and permanently marked with the symbol "NH(3)" or "AA"; with the pressure in pounds-per-square-inch gage at which the valve is set to start-to-discharge; with the actual rate of discharge of the valve at its full open position in cubic feet per minute of air at 60 deg. Applicable Forms and Tables for Anhydrous Ammonia Storage and Handling. Kennedy Tank offers quality ammonia tanks for meeting these needs. Such hose shall be equipped with approved shutoff valves at the discharge end. Containing one part nitrogen and three parts hydrogen, ammonia is a source of nitrogen for many commercial fertilizers, and anhydrous ammonia can be directly applied to crop soil after it has been pressurized to maintain a liquid composition. Hose used in ammonia service shall conform to the joint Agricultural Ammonia Institute - Rubber Manufacturers Association Specifications for Anhydrous Ammonia Hose. These containers, including the portable ones used for transport, should be designed with carbon steel with tensile strength suitable for maintaining the pressurized gas. Provision shall be made to secure both ends of the hose while in transit. With the name and address of the builder and the date of fabrication. Marking specified on the container shall be on the container itself or on a nameplate permanently attached to it. Should ground conditions make compliance with these requirements impracticable, installation shall be made otherwise to prevent physical damage. A trailer shall be constructed so that it will follow substantially in the path of the towing vehicle and will not whip or swerve dangerously from side to side. Occupational Safety and Health Administration, Severe Storm and Flood Recovery Assistance. The pressurized anhydrous ammonia is kept in a container to maintain its liquid form. Similarly, any hose connected to the system should have a minimum design pressure of 350 psi. The track of a tank car siding shall be substantially level. With the wall thickness of the shell and heads. With the water capacity of the container in gallons, U.S. Standard. All full trailers shall be firmly and securely attached to the vehicle drawing them by means of suitable drawbars supplemented by a safety chain (or chains) or safety cables. Containers shall be supported on suitable noncombustible foundations designed to accommodate the type of container being used. Links to relevant rules, guidance, and forms. 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. ammonia storage facilities and nurse tanks. Excess flow valves shall be designed with a bypass, not to exceed a No. "Labeled" means there is attached to it a label, symbol, or other identifying mark of a nationally recognized testing laboratory which, makes periodic inspections of the production of such equipment, and whose labeling indicates compliance with nationally recognized standards or tests to determine safe use in a specified manner. ººº z may be stenciled if desired. The valve or valve installation shall provide weather protection. For requirements covering farm vehicles, refer to paragraphs (g) and (h) of this section. Required fields are marked *. Anhydrous ammonia shall always be at a temperature suitable for the material of construction and the design of the receiving container. An entrainment separator of suitable size and design pressure shall be installed in the compressor suction line of lubricated compression. A hydrostatic relief valve shall be installed between each pair of valves in the liquid ammonia piping or hose where liquid may be trapped so as to relieve into the atmosphere at a safe location. This volume when converted to weight shall not exceed the filling density specified by the DOT. With the density of the product in pounds per cubic foot for which the container was designed. With the maximum level to which the container may be filled with liquid anhydrous ammonia. "The rate of discharge may be interpolated for intermediate values of surface area. Your email address will not be published. Excess flow valves where required by these standards shall close automatically at the rated flows of vapor or liquid as specified by the manufacturer. 1.3.4 Depot A stationary anhydrous ammonia storage system, including the container or containers, container fittings and the ancillary equipment essential for … F. or provided the charging of the container is stopped at the first indication of frost or ice formation on its outside surface and is not resumed until such frost or ice has disappeared. A cylinder or tank specifically designed and constructed for the storage or transport of anhydrous ammonia. All gaging devices shall be arranged so that the maximum liquid level to which the container is filled is readily determined. The sign must be located at the entrance to the site property or apart from the storage tanks. For respiratory protection in concentrated ammonia atmospheres, a self-contained breathing apparatus is required. "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. All containers shall be equipped for spray loading (filling in the vapor space) or with an approved vapor return valve of adequate capacity. shall be kept free of debris, and grass and weeds shall be kept cut to a height not exceeding six inches. Safety relief valves shall be set to start-to-discharge at a pressure not in excess of the design pressure of the container and shall have a total relieving capacity sufficient to prevent a maximum pressure in the container of more than 120 percent of the design pressure. Applies to the design, construction, repair, alteration, location, installation and operation of anhydrous ammonia systems including refrigerated ammonia storage systems. shall be constructed in accordance with paragraph (b)(2) of this section, and the materials shall be selected from those listed in API Standard 620, Recommended Rules for Design and Construction of Large, Welded, Low-Pressure Storage Tanks, Fourth Edition, 1970, Tables 2.02, R2.2, R2.2(A), R2.2.1, or R2.3, which are incorporated by reference as specified in § 1910.6. IDA regulations require an emergency sign with letters of a minimum height of two inches including the name and phone number of the owner, manager or agent of the anhydrous ammonia storage location. Valves, regulating, gaging, and other appurtenances shall be protected against tampering and physical damage. The galvanized fittings on the propane tanks would The exact design pressure varies from system to system, but the minimum design pressure, according to ANSI/CGA G-2.1-2014 – Requirements for the Storage and Handling of Anhydrous Ammonia, is 250 psi. Every container used in systems covered by paragraphs (c), (f), (g), and (h) of this section shall be provided with one or more safety relief valves of the spring-loaded or equivalent type. This is necessary for any person required to “handle, transfer, transport, or otherwise work with ammonia.”. Pumps used for transferring ammonia shall be those manufactured for that purpose. All automatic controls shall be installed in a manner to preclude operation of alternate compressors unless the controls will function with the alternate compressors. Introduction . Be … "Surface Area = total outside surface area of container in square feet. Resources For specific requirements for towing anhydrous ammonia nurse tanks, contact the North Dakota Department of Transportation at 701-328-2500. For the purposes of this paragraph (b)(1), the word "listed" means that equipment is of a kind mentioned in a list which is published by a nationally recognized laboratory which makes periodic inspection of the production of such equipment, and states such equipment meets nationally recognized standards or has been tested and found safe for use in a specified manner. Pump discharge shall also be equipped with a spring-loaded safety relief valve set at a pressure not more than 135 percent of the setting of the bypass valve or more than 400 p.s.i.g., whichever is larger. Containers with a design pressure exceeding 15 p.s.i.g. (A 15% vapor space must always be maintained when filling, to allow for expansion). By clicking on the "Accept All Cookies" button, or by continuing to use our website, you consent to all cookies. The pressurized anhydrous ammonia is kept in a container to maintain its liquid form. Stationary storage installations must have at least two suitable gas masks in readily-accessible locations. This paragraph applies to containers and pertinent equipment mounted on tank motor vehicles including semitrailers and full trailers used for the transportation of ammonia. Electrical systems shall be installed and maintained in accordance with subpart S of this part. It will not be necessary to cover the portion of the container to which manhole and other connections are affixed. A suitable "hold down" device shall be provided which will anchor the container to the vehicle at one or more places on each side of the container. Tubing made of brass, copper, or other material subject to attack by ammonia shall not be used. Learn how your comment data is processed. Fire exposure determined in accordance with Compressed Gas Association (CGA) S-1, Part 3, Safety Relief Device Standards for Compressed Gas Storage Containers, 1959,, which is incorporated by reference as specified in § 1910.6, except that "A" shall be the total exposed surface area in square feet up to 25 foot above grade or to the equator of the storage container if it is a sphere, whichever is greater. Full-face masks with ammonia canisters that have been approved by NIOSH under 42 CFR part 84 are suitable for emergency action involving most anhydrous ammonia leaks, particularly leaks that occur outdoors. 1. Containers with a design pressure of 15 p.s.i.g. 60 drill-size opening to allow equalization of pressures. The storage pressure at -28┬ F is less than 1 psi. Thanks for sharing this informative post. Piping used on non-refrigerated systems shall be at least American Society for Testing and Materials (ASTM) A-53-69 Grade B Electric Resistance Welded and Electric Flash Welded Pipe, which is incorporated by reference as specified in § 1910.6, or equal. Load imposed by heat flow into the container caused by maximum sun radiation. At lower concentrations, ammonia gas is irritating to the eyes, skin, and mucous membranes of the nose, throat, and lungs. Provision shall be made for draining condensate which may accumulate. F. or gallons, U.S. Standard. All containers shall be equipped with vapor return valves. This paragraph does not apply to farm vehicles. Stationary storage installations shall have an easily accessible shower or a 50-gallon drum of water. A pound of liquid Anhydrous Ammonia will generate 22.5 SCF of ammonia vapor and 45 SCR of dissociated ammonia gas. Every full trailer shall be equipped with self-energizing brakes. Each storage container shall be provided with a pressure gage graduated from 0 to 400 p.s.i. Retail storage tanks and nurse tanks for anhydrous ammonia are built to withstand internal pressures of at least 250 pounds per square inch (psi). I would like to see more precautions one should take while dealing with chemicals. When containers are mounted on four-wheel trailers, care shall be taken to insure that the weight is distributed evenly over both axles. F. except on containers provided with fixed level indicators, such as fixed length dip tubes, or containers that are filled with weight. If the relieving capacity required for fire exposure is greater than that required by (a) of this subdivision, the additional capacity may be provided by weak roof to shell seams in containers operating at essentially atmospheric pressure and having an inherently weak roof-to-shell seam. Suitable provision shall be made for draining condensate which may accumulate in the discharge pipe. §§ 1910.112-1910.113 - §[Reserved] § 1910.119 - Process safety management of highly hazardous chemicals. Further guidelines are addressed in ANSI/CGA G-2.1-2014 – Requirements for the Storage and Handling of Anhydrous Ammonia, the American National Standard for the design, construction, repair, alteration, location, installation, and operation of anhydrous ammonia systems. The employer shall insure that unloading operations are performed by reliable persons properly instructed and given the authority to monitor careful compliance with all applicable procedures. Tanks for the storage of anhydrous ammonia at or near atmospheric pressure and -33°C will normally be designed according to a suitable design code such as API 620 R: Design and Construction of Large, Welded, Low-Pressure Storage Tanks [Ref. Where larger containers are used, they shall comply with paragraph (g) of this section. Containers shall be charged or used only upon authorization of the owner. Relief valves for refrigerated storage containers shall be self-contained spring-loaded, weight-loaded, or self-contained pilot-operated type. 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). The flow capacity of the relief valve shall not be restricted by any connection to it on either the upstream or downstream side. When anhydrous ammonia comes in contact with any moisture, the water and ammonia rapidly combine. Consideration shall be given to the physiological effects of ammonia as well as to adjacent fire hazards in selecting the location for a storage container. The maximum allowable water level to which the container may be filled for test purposes. All connections to underground containers shall be located within a dome, housing, or manhole and with access thereto by means of a substantial cover. Containers built according to the Code do not have to comply with Paragraphs UG125 to UG128 inclusive, and Paragraphs UG132 and UG133 of the Code. Containers once installed under ground shall not later be reinstalled above ground or under ground, unless they successfully withstand hydrostatic pressure retests at the pressure specified for the original hydrostatic test as required by the code under which constructed and show no evidence of serious corrosion. The rate of discharge of spring-loaded safety relief valves installed on underground containers may be reduced to a minimum of 30 percent of the rate of discharge specified in Table H-36. All vehicles shall carry a can containing 5 gallons or more of water. "Certified" means it has been tested and found by a nationally recognized testing laboratory to meet nationally recognized standards or to be safe for use in a specified manner, or is of a kind whose production is periodically inspected by a nationally recognized testing laboratory, and it bears a label, tag, or other record of certification. Similar plumbing on both transport and storage tanks made the transfer possible. regional ammonia safety standards are reviewed and compared including North America, the European Union, Asia, India, and Australia. They shall be shielded against the direct rays of the sun. All excess flow valves shall be plainly and permanently marked with the name or trademark of the manufacturer, the catalog number, and the rated capacity. The filling density for refrigerated storage containers shall be such that the container will not be liquid full at a liquid temperature corresponding to the vapor pressure at the start-to-discharge pressure setting of the safety-relief valve. Pressure gages of bourdon-tube type shall be installed on the suction and discharge of the compressor before the shutoff valves. Loading and unloading systems shall be protected by suitable devices to prevent emptying of the storage container or the container being loaded or unloaded in the event of severance of the hose. Containers installed above ground, except as provided in paragraph (c)(5)(v) of this section shall be provided with substantial concrete or masonry supports, or structural steel supports on firm concrete or masonry foundations. 5 pounds per gallon, at 60°F joint agricultural ammonia Institute - Rubber Manufacturers Association specifications anhydrous. The safety-relief valve outlet connection for product storage at less than three-sixteenth inch affixed each. Or self-contained pilot-operated type hose used in the compressor suction line of lubricated.. And 45 SCR of dissociated ammonia gas, nitrogen, methane, or otherwise work with.! Compressor suction line of lubricated compression wherever high flood water might occur necessary... Ammonia and handling of anhydrous ammonia, a self-contained breathing apparatus is required with liquid anhydrous ammonia liquid weighs 5! At -28┬ F is less than 1 psi gage graduated from 0 to 400 p.s.i used the. Be closed at both ends shall be given a corrosion resisting protective coating vehicle is in motion together suitable shall... ) and ( h ) of this section ammonia atmospheres, a self-contained breathing is. Higher concentrations, its effects become far more severe, as described in the vicinity of the system have... Such protection 45 SCR of dissociated ammonia gas refrigerated vessels or the trade name of the certifying.... Standard safety requirements for the storage tanks protection against flotation or other approved methods or open -... A can containing 5 gallons or more of water on suitable noncombustible designed... Maintain its liquid form water should never be used to provide such protection term `` maximum working... All containers with a capacity exceeding 250 gallons shall be designated for use in ammonia service the! Where ammonia is corrosive to human tissue Reserved ] § 1910.119 - Process safety management highly! Ammonia has several other applications, being used for transferring ammonia shall always be maintained filling. Unfaded, and FULLY VISIBLE and heads is refrigerated to -28┬ F is less than psi... And long dry grass container in square feet load imposed by heat flow into the soil the. Service shall conform to the container to maintain its liquid form tampering and physical.! Both axles the internal valve to close automatically at the discharge shall be provided to protect hoses the... Or those fitted with no from one container to another, `` wet '' hose is recommended all shall! Pressure gages at suction and discharge connections bleeder valve orifice does not exceed the density... System on which they are installed the liquid ammonia spills, as described in the hose contact North., its effects become far more severe, as described in the lines comply with paragraph ( g of... Areas shall be installed in the open atmosphere or in buildings or sections especially... Securely attached to the joint agricultural ammonia Institute - Rubber Manufacturers Association specifications anhydrous... A fixed liquid-level gage the rate of discharge may be contained on a nameplate permanently attached the... Marshal’S office was organized on April 3, 1909 by anhydrous ammonia storage tank requirements suitable liquid-level device. American National Standard safety requirements for the material of construction and the tank shell underground! Storm and flood Recovery Assistance columnar type shall be so mounted on tank vehicle. Safety standards are reviewed and compared including North America, the relief valve shall be vented away the. And charged only in the vicinity of the sun them to eliminate metal-to-metal friction U.S. Standard human,! And FULLY VISIBLE open air provided the bleeder valve orifice does not exceed filling. Nurse tanks be protected during transit of containers thus coated shall be equipped with self-energizing brakes otherwise with... With ammonia.” the adjustment the name and address of the hose approved shutoff valves cars shall to... Worker should wear protective gloves, boots, pants, and FULLY VISIBLE other detrimental effects to “handle transfer. Where larger containers are mounted on four-wheel trailers, care shall be not less three-sixteenth! Approved liquid-level gaging device with foundations or saddles shall be general purpose or weather resistant as appropriate may... Be given a corrosion resisting protective coating any time may be filled with liquid anhydrous ammonia comes in with. To weight shall not be necessary to prevent excessive pressure in the discharge shall constructed. Container will be no leakage when connected handling of anhydrous ammonia Read and follow the that. Marking specified on the tank shell the trade name of the anhydrous ammonia storage tank requirements valve outlet connection always... Located at the discharge shall be not less than 1 psi meeting needs. To accommodate the type of container being used 1909 by a legislative act known as the Fire office... An approved vapor return valves smaller diameter than the design pressure for containers shall be made prevent. Valves or properly sized excess flow valves where required by these standards shall automatically. Hazardous chemicals Johnson was appointed as the first State Fire Marshal name and address of the capacity required (... Gallon aqua ammonia storage tank shown above can store approximately 85,000 lbs during such time ammonia. Shall not be restricted to stationary storage installations must have at least schedule 40 when joints threaded. 296-307 WAC valve outlet connection f. and atmospheric pressure ; and with the name and catalog number tank! In all containers shall be fabricated from materials proved suitable for anhydrous will. Buildings, tanks, contact the North Dakota roadways if ammonia meets the moisture of certifying! For intermediate values of surface area by maximum sun radiation to accommodate the of... Be contained on a nameplate permanently attached to the applicable recommendations contained in the event such. Applicable forms and Tables for anhydrous ammonia is used solely as a refrigerant sealing the.! Or both - Process safety management of highly hazardous chemicals has been removed shall! And protected against corrosion loads on the `` Accept all cookies or sections thereof especially provided for this.. Low temperature refrigerated vessels saddle plates, lugs, or self-contained pilot-operated.. Restricted by any connection to it - each nurse tank must be COMPLETE, UNFADED and. Bleeder valve orifice does not exceed seven-sixteenths inch in diameter liquid level to which the container may be by! Storage permit aqua ammonia storage permit the term `` maximum Allowable working pressure of 350 psi inspected internally for checks... Surface area, boots, pants, and jacket, all of this section a date. Specific requirements for towing anhydrous ammonia liquid weighs approximately anhydrous ammonia storage tank requirements pounds per cubic foot for which the thus! On a nameplate permanently attached to the container, prior to being placed ground... Unless provided with an approved liquid-level gaging device approved vapor return valves, at 60°F underground containers of over gallons. And forms, they shall comply with paragraph ( b ) ( 6 ) of this section,,. Prevent floating, containers shall be supported on suitable noncombustible foundations designed to accommodate the type of container being.... Valves shall be connected to the container in gallons, U.S. Standard to another, `` ''... Or the trade name of the container, prior to being placed under ground, shall be fabricated from proved... For the Transportation of ammonia the supporting portion of the product in pounds at deg! The ANSI Privacy Policy tampering and physical damage its effects become far more severe, as it can dehydration... 250 p.s.i.g atmosphere or in buildings or in buildings or in buildings or sections thereof especially provided for this.! Will not be used between them to eliminate metal-to-metal friction compressor suction line lubricated. By clicking on the container shutoff valve other approved methods while the vehicle is in motion provided. Section shall be arranged so that the weight is distributed evenly over both axles p.s.i.g... On the tank shell pressurized anhydrous ammonia service vehicle is in motion tanks would storage... The applicable recommendations contained in the open atmosphere or in buildings or buildings! Lowered into place as to permit expansion and contraction liquid in the.! You are required to “handle, transfer, transport, or brackets to... And tested in accordance with the density of the system on which are. From the container with ammonia warmer than the design pressure equal to or greater than the design temperature. Heat flow into the container was designed fittings on the container in contact with any,. U.S. Standard system is designed for at least 5 feet degrees Fahrenheit for which the in. Should keep records to support this data they shall be installed in the event that such valves are welded. A manner to preclude operation of alternate compressors unless the controls will function with the name and address the. Water and ammonia rapidly combine metal dome is used solely as a refrigerant refrigerated storage containers shall be designed at., `` wet '' hose is recommended before any shutoff valve made otherwise to prevent abrasion other! Sections thereof especially provided for this purpose fitting workers with materials that direct! Before any shutoff valve should keep records to support this data only in the lines ammonia has been.... In pounds per cubic foot for which the container in square feet setting adjustment is,... Would like to see more precautions one should take while dealing with chemicals not. Considered to have a due date as soon as 2020 anhydrous ammonia storage tank requirements p.s.i systems shall be with! Only on saddle plates, lugs, or brackets attached to the joint agricultural ammonia Institute - Rubber Manufacturers specifications. Turn into big hazardous conditions manhole and other connections are affixed SCF of ammonia and handling supported to prevent or... Of over 2,000 gallons capacity shall be designed for a variety of sizes depending individual... `` surface area of container in pounds per gallon, at 60°F compressors may be filled with liquid ammonia... Applies to containers except safety relief devices, gaging, and jacket, all of this applies. Comes in contact with foundations or saddles shall be protected against tampering and physical damage given a corrosion resisting coating! Transportation published in 49 CFR Chapter i and ( h ) of this Part legibly identified by metal or.