Summary In May 2019, ammonia began leaking from a suction regulator installed on the roof of a facility. The incident resulted in seven reported injuries and one fatality. The leak calculations determined that approximately 12 lbs of ammonia was released before the valve was isolated. Incident Description One of the eight bolts holding the suction […]
Summary In August 2023, the catastrophic failure of a nurse tank containing anhydrous ammonia resulted in the release of all the ammonia contained within the tank. Incident Description The nurse tank was sitting stationary in a farm co-op lot when the tank failure suddenly occurred. According to the report, “The failure caused the tank shell […]
Summary In August 2016, the sudden breaking of a valve on an ammonia pump resulted in a release of 34-284 lbs of ammonia. The root cause was determined to be a stress crack that formed at the threads of a valve, ultimately leading to the top of the valve shearing off. Incident Description The ammonia […]
Summary In June 2016, a hole developed in the nipple of a ½” service valve, resulting in a release of 1,224 lbs of ammonia. The service valve, installed on a liquid transfer vessel, began leaking liquid ammonia into the machinery room. Incident Description Long-term, chronic corrosion caused a 1.5 mm hole to develop in the […]
Summary In December 2016, a roof collapse resulted in a release of approximately 24,000 lbs of ammonia. Two (2) ceiling-suspended evaporators were hung from the roof and fell to the ground when the structure collapsed. Incident Description During a heavy rainstorm, the roof over a cold storage room collapsed. Two (2) ceiling-suspended evaporator coils fell […]
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