In 2010, a Workplace Health and Safety Queensland (WHSQ) Safety tool for ammonia refrigeration safety (which included an audit checklist and supporting reference material) was made available to industry. Suitable gloves are made of rubber and are impervious to ammonia, and have long cuffs that should be turned back to prevent drips from running down the arm when hands are elevated. Know where these respirators are located and how to use them. At a concentration of only 50 parts per million (ppm), one sniff tells what is in the air. One “slicker suit,” a rain suit that is impervious to ammonia. The excess flow valve prevents release of anhydrous ammonia vapors from the nurse tank if the vapor valve fails. This section offers information and tools to help you manage risks and protect health, safety and wellbeing. Most uncontrolled releases are due to improper procedures, careless or untrained workers, or faulty equipment. Background The uncontrolled release of ammonia from refrigeration plant is a critical work health and safety risk. Effective April 1, 2004. Liquefied anhydrous ammonia is stored as a liquid and has a boiling point of -33°C. The emergency shut-off valve is another valve not found on a nurse or applicator tank (Figure 12). In event of a spill or leak, immediately put on escape-type respirator and exit the area. Regularly scheduled maintenance must be conducted to ensure that the gauges and valves on a nurse tank are suitable for service. This small amount of water will last only long enough for the worker to get to a larger quantity of water, but it may make the difference between blindness and sight. This manual summarizes the requirements of environmental and safety laws for anhydrous ammonia refrigeration system operators. This distinguishes it from ammonia/water solutions. Title Demonstrate knowledge of anhydrous ammonia and safe practices for its use as a refrigerant Level 3 Credits 6 Purpose This unit standard is for people who work with ammonia as a refrigerant within the refrigeration industries. Hand tighten the valve wheel; overtightening can damage the valve or seals. Review the instructions when needed. To ensure operator safety, workers must be trained to handle this product and to follow strict work procedures. The burns will result in damage to the eyes, such as cataracts, glaucoma and possibly some permanent vision loss and disfigurement. An anhydrous ammonia storage facility owner or operator must be present at the pickup of a nurse tank or applicator tank at an anhydrous ammonia storage facility unless the tank is empty or unless an approved locking device is installed on the tank. Collect as much water as possible and continue flushing while arrangements are being made to transport the victim to a medical facility. safe procedures and good-quality equipment do work. First aid can be given while transport arrangements are being made, but get the victim to medical care as soon as possible. Title Demonstrate knowledge of anhydrous ammonia and safe practices for its use as a refrigerant Level 3 Credits 6 . The transfer process must be done on a firm, well-prepared, level surface during daylight hours on the owner’s or consignee’s property; The following minimum setback distances apply to transfer facilities: 1. The fit should be loose enough for easy removal but snug enough for good protection. The pilot project is coordinated by the North Dakota Insurance Commission, Anhydrous Ammonia Inspection Office, State Capitol, Fifth Floor, 600 East Boulevard Ave., Bismarck, ND 58505-0320. Failure to close any of these valves may result in a dangerous spray of ammonia. Clean hose/applicator connectors before connecting them. Stationary storage facilities not used for retail sales or disbursement of anhydrous ammonia are required to have the same safety facilities as commercial stationary storage facilities. When used as fertilizer, NH 3 has concentration of about 1x10 6 ppm. Anhydrous ammonia is generally safe provided safe storage, handling, operating, and maintenance procedures are in place and being followed. It is accurate only if the tank is level. Wear personal protective equipment. These forms must be on record for at least three years and available for review at the facility during normal business hours. The emergency water reservoir also must be attached to the nurse tank and be filled with 5 gallons of clean, fresh water. The replacement date is stamped on the coupler. This valve must have a rain cap in place to prevent damage from moisture and corrosion. 9. Bleeder valves should be opened slowly. Anhydrous ammonia nurse tanks, therefore, cannot be towed at a speed exceeding 25 miles per hour. Keep the informative decals on the equipment up to date. Everyone who works with anhydrous ammonia should carry a 6- or 8-ounce squeeze bottle of fresh water on their person at all times. Ammonia can be mixed with water and sold as ammonium hydroxide, or used in compressed gas as anhydrous ammonia (meaning without water). prepare an effective emergency plan for workplaces with anhydrous ammonia-based refrigeration systems. You can let us know your thoughts here. Pure ammonia -- usually called anhydrous ammonia (AA) -- is rich in nitrogen and is used as a fertilizer. The transport tank must have complete, up-to-date certification and labeling. A person in possession of a nurse tank or an applicator tank may not drop off the tank at an anhydrous ammonia storage facility if the owner or operator is not present unless the tank is empty or unless an approved locking device is installed on the tank. Train employees to work safely with ammonia by following these general precautions and the safe work practices that apply in this facility: 1. When mixed with lubricating oils, its flammable concentration range is increased. Handling: Immediately report leaks, spills or failures of the safety equipment (e.g. Protective measures are needed to ensure the safety of those working with NH3 and any people who live, work, or otherwise are near NH3. This unit standard is for people who work with ammonia as a refrigerant within the refrigeration industries. The odor is the strongest safety feature of the product. It also provides advice on what PCBUs using ammonia can do to fulfil their duties. Animals and livestock should be removed from the threatened area after people have been taken care of first. One cubic foot of anhydrous ammonia in a liquid state produces 855 cubic feet of ammonia gas. Clothing actually is frozen to the skin. ■ Always have an 8-ounce squirt bottle of water available when working with any anhydrous ammonia equipment.■ Wear gloves and goggles when connecting or disconnecting nurse tanks and applicators.■ Always have a backup set of gloves, goggles, respirator with approved cartridge and 5 gallons of fresh water when applying or transporting anhydrous ammonia nurse tanks.■ Always work upwind of anhydrous ammonia equipment.■ Carry the nurse tank hose by the valve body or coupling rather than by the valve wheel or control handle.■ Clean hose/applicator connectors before connecting them.■ Hand tighten the valve wheel; overtightening can damage the valve or seals.■ Follow the recommended procedure for connecting and disconnecting nurse tanks and applicators. AA is extremely dangerous. Workers also must be trained to handle this product and to follow strict work procedures to ensure operator safety. Bleeder valves are used in several processes of handling anhydrous ammonia. Anhydrous ammonia may not be transferred from an anhydrous ammonia bulk delivery vehicle to a nurse tank or applicator tank unless the tank is equipped with an approved locking device. It should be used immediately and is intended to give the victim time to get to the 5-gallon supply. Find health and safety information and guidance about your industry and the kind of work you do. The vapor valve has an excess flow valve (which has a five-year replacement requirement). Most accidents with anhydrous ammonia are due to uncontrolled releases. Read more about emergency planning for hazardous chemicals. The chemical burning starts instantly and the injury becomes worse as time passes. Safety systems review 14. One pair of ammonia-impervious, protective gloves, 3. 6. Anhydrous Ammonia Anhydrous ("without water") ammonia (NH 3) is a chemical covered under Part 36 - Chemical and Biological Substances of the Manitoba Workplace Safety and Health Regulation. Introduction . Only the un-vented type of goggles will minimize ammonia exposure to the eyes. If your enquiry is about something more specific, please visit our Contact us page. 4. 4. A respirator equipped with anhydrous ammonia cartridges approved by the National Institute for Occupational Safety and Health (NIOSH) is designed only for low-level exposures not to exceed more than 300 ppm. Anhydrous ammonia (ammonia)1 is an industrial and commercial compound with ever increasing popularity in a multitude of applications. AA is stored as a liquid under pressure in tanks and injected directly into the soil. The bolts and nuts that attach the tank to the frame are especially subject to loosening or breaking. North Dakota law requires anhydrous ammonia nurse tanks, empty or full, to display either a slow moving vehicle (SMV) sign or a lighted rotating or flashing amber light while on a public roadway. Operating procedures 3. Doss, H.J., 1998. Learn about the Acts, Regulations and codes of practice we are responsible for and find information on workplace inspections and prosecutions. These decisions should be made by emergency personnel, such as a local fire department. 2. The respiratory system essentially may be paralyzed due to the pain. The decals indicate what each system component does and identifies the first aid water, other protective equipment and protective procedures. Preventing Ammonia Burns and How to Treat Them, Michigan State University Extension, Michigan State University. Safety procedures for working with anhydrous-ammonia (7664417) are presented. Swallowing ammonia can cause burns to the mouth, throat, and stomach and can be fatal. Anhydrous ammonia – used in manufacturing, refrigeration and agriculture – is a pungent, colorless and toxic gas or liquid that, when concentrated, is corrosive to human tissue upon contact, according to NIOSH. Some safety features have service life limitations supported by state laws because these features are not repairable in the field and require trained technicians to service them. Using Agricultural Anhydrous Ammonia Safely, EC94-738-B, University of Nebraska Cooperative Extension, University of Nebraska. Soil or debris can interfere with the applicator flow metering system. Some nurse tank components have a service life limitation based on time. Because the atomic weights of nitrogen and hydrogen are not the same, the weight ratio is 82.5 percent nitrogen to 17.5 percent hydrogen. Anhydrous ammonia is extremely destructive to animal tissue. The victim always should be taken to professional medical help as soon as possible. Mechanical Integrity 5. A self-contained breathing apparatus (SCBA), which supplies the air to be breathed, and a sealed, protective HazMat suit are required for working in a cloud of escaping anhydrous ammonia. Figure 1. 7. Goggles must be unvented to keep the anhydrous ammonia away from the eyes. inspecting for cracks, broken welds and bent members. Benefits of health and wellbeing for work, Queensland University of Technology: Wellness Matters, New approach to mental health in resources sector, Notify Workplace Health and Safety Queensland or the Electrical Safety Office, Notify WorkCover Queensland or your workers' compensation insurer, An Occupier's Guide to Emergency Planning, Emergency Planning: A Guideline for Hazardous Industry, emergency planning for hazardous chemicals, AS/NZS 3788:2006: Pressure equipment – In-service inspection, AS/NZS 3873:2001: Pressure equipment – Operation and maintenance, Victorian Code of Practice Ammonia Refrigeration 2010, Workers' Compensation Regulatory Services, Allied health and return to work providers, is a colourless gas that has a strong smell, and is toxic, corrosive and flammable, is an efficient refrigerant having the ability to absorb large quantities of heat, is a naturally occurring gas which does not support global warming, nor attack the ozone layer, AS/NZS 5149:2016: Refrigerating systems and heat pumps (part 1-4) (supersedes AS/NZS 1677). The North Dakota Legislature adopted the following rules as a pilot project for locking anhydrous ammonia tanks in several North Dakota counties. The tank must be labeled correctly on each end and side with the green diamond around the words DOT (Department of Transportation) “NON-FLAMMABLE GAS” and on each side and end with “Anhydrous Ammonia” in letters not less than 2 inches high. The roll cage must be strong enough to prevent damage to the gauges and valves. The clothing should be tightly closed at the cuffs and collar to restrict the entry of anhydrous ammonia. Technical guidance for ammonia-based refrigeration systems is available in various Australian Standards including: We appreciate your input into making our site better. In fact, certain practices must be followed during the operation and maintenance of ammonia refrigeration systems. 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