1111 CRAFTSMAN WAY 2023-07-12 - Laserfiche WebLink

Refrigerant Safety Anhydrous ammonia is a colorless, pungent, corrosive, and toxic liquefied gas, easily identified by its odor. Ammonia expands 850 times when turning from a liquid to a gas; ammonia equipment exposed to fire may vent through safety relief valves, or can rupture or explode. Liquid ammonia that is isolated in equipment or piping and allowed to warm can rupture the equipment violently. Ammon is is lighter than air so it will rise, although it may be very cold when released which may cause itto hover rtially. It may accumulate in confined spaces and enclosed spaces without active ventilation. Personswill notwilli nglystay in atmospheres that aretoxic. Exposure to liquid may cause blindness and frostbite as well as severe chemical burns. Consult the MSDS before working with ammonia. Freon refrigerants primary safety hazards are asphyxiation and frostbite. Although they have low toxicity, Freon leaks kill more people than ammonia. Freon is odorless and will silently displace the air in a space until there is not enough to support We. Consult the MSDS before working with Freon. WELDINGAND CUTTING GUIDELINES Procedures The purpose of this procedure is to protect employees, customers and property from potential fire, explosions and other dangers resulting from cutting and welding. This procedure defines hot work as any activity which results in sparks, fire, molten slag, or hot material, which has the potential to cause fires and explosions. Anhydrous Ammonia In general, welding and hot work in contact with a refrigerating system constitutes a hazard. The probability exists for a flammable ammonia/refrigeration oil/air mixture to be present within a component being modified. - By itself, anhydrous ammonia is considered a stable compound and is hard to ignite. However, the combination of high temperatures, ammonia, refrigeration oil and air can create an expbsive situation. Anhydrous ammonia's explosive range is 15% - 26%, which converts to 150,000 ppm to 260,000 ppm by volume. The presence of refrigeration oil can reduce this by half. Hot Work ata Customers Job Site Teknotherm will review the host employer's hot work plan prior to beginning work. The job supervisor will complete and authorize the hot work permits for Teknotherm as needed. Hot Work on a Marine Vessel Hot Work on a marine vessel requires additional atmospheric testing and compliance with the requirements set forth in the Shipboard Fire Safety Plan. Teknotherm will follow the host employer's hot work policies when welding onboard a vessel. Transporting, Moving and Storing Compressed Gas Cylinders • Keep valve protection caps in place when not being used. Do not use oil to lubricate caps or valves. • When cylinders are hoisted, use a pallet. Do not hoist with a choker sling. • Move cylinders by tilting and rolling them on their bottom edges. Prevent cylinders from being