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Almost two years ago to the month I wrote about a condenser manufacturer’s marketing practices regarding their “man-sized” access door, only to be rebuffed by the manufacturer and those who were buying their model so they no longer had to follow Permit-Required Confined Space (PRCS) practices and procedures. Now in 2019, we have a competitor who has followed suit in their concept...
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At 10:00 a.m. on November 23, 2018, two employees were working for a firm that provided support activities for oil and gas operations. Employee #1 and Employee #2 were part of a crew that was going to launch a pig from a pig launcher on a natural gas line. There were flammable vapors present. The flammable vapors were ignited by a NON-INTRINSICALLY-SAFE CORDLESS GREASE GUN. A flash fire ensued. Employee...
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Incident overview
In an industrial food processing facility, an ammonia leak occurred from the thermal expansion valve diaphragm, that required replacement.
Site, system and components
The thermal expansion valve and diaphragm control the rate of flow of liquid ammonia that feeds the spiral freezer. The freezing temperatures are obtained when liquid ammonia evaporates to vapor in the series of evaporators...
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Incident overview
An ammonia release occurred in the mezzanine area at an industrial food processing facility, which resulted in the evacuation of the facility and temporary shutdown of the ammonia plant.
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Incident overview
The bolted flanged connection on the suction of a reciprocating compressor failed causing an uncontrolled release of ammonia into the machinery room. The ammoniadetection system worked as designed activating the ventilation system and alarming the appropriate parties. The leak was isolated and no injuries resulted.
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Incident overview
Manhole gasket seal on an oil separator pressure vessel failed to hold ammonia in the vessel which resulted in the exhaust ventilation system to be activated.
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Incident overview
There were no injuries or property damage due to the Ammonia release from the pinhole in the 1” piping to the Hydro Cooler Surge Drum. The Ammonia vapor set the leak detector on at 50 ppm which activated the alarms. The Ammonia Vapor was drawn in from the outside of the building where the leak occurred by the inlet air louvers by the continuous vent fan. The affected area of the 1”...
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Incident overview
The bonnet gasket on the isolation valve between the brine chiller and the oil pot leaked approximately 10 lbs ammonia into the mechanical room. Two (2) refrigeration technicians had completed draining oil from the oil pot and when the isolation valve was closed the bonnet gasket leaked ammonia into the brine chiller insulation. The ammonia detection alarm did NOT (it was turned off...
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Following the release of the Fernie Incident Investigation Report Technical Safety BC developed new ammonia refrigeration industry maintenance guidelines to support facility owners and refrigeration professionals with implementing the report recommendations. The purpose of these guidelines is to provide ammonia refrigeration plant owners and operators with guidance and basic information about the development,...
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On July 13, 1973, at a fertilizer plant, one of four 50-ton (metric) pressure-storage tanks (horizontal bullet type) failed. The failure resulted from brittle fracture of a dished end. No specific source of cracking, or a “triggering incident” was identified. An estimated 30 ton of anhydrous ammonia was released, plus another 8 ton from a tank car. The ammonia caused the deaths of 18 people....
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I am trying to get the details behind this one. I do know it was a vertical vessel inside an engine room. it failed, catastrophically, and did considerable damage inside the engine room as well as off-site. No off-site injuries or damage (other than the grass in the median of the road where it came down. Three workers were injured, treated at the local hospital and released...
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