Question: What is an emergency pressure control system? Answer: An emergency pressure control system (EPCS) is a pressure-limiting safety system that is required by many current Fire Codes (International Fire Code and NFPA 1). The EPCS has replaced the Emergency Control Box (sometimes called Dump Box, Red Box, Fire Department Box, etc.) as a code required safety system for over-pressurization events. […]
There seems to be a lack of clarity regarding the frequency that Mechanical Integrity inspections must be performed on ammonia refrigeration systems and more specifically whether a 5-year MI inspection is required by the PSM regulation. Title 29 CFR §1910.119(j)(4)(iii) requires that “the frequency of inspections and tests of process equipment shall be consistent with applicable manufacturers’ recommendations and good engineering practices, […]
Question: What pieces of equipment in ammonia systems are required to have nameplates? Answer: The quick answer is that all equipment, valves, instruments, appurtenances, etc. should be equipped with nameplates as a best practice. Current codes and standards require nameplates on all major equipment. Here is a quick summary of relevant codes and standards on this topic: […]
Question: How often must ammonia detectors be calibrated? Answer: It is often best to let the codes speak for themselves… 2013 CFC §606.1 Periodic Testing. The following emergency devices or systems shall be periodically tested in accordance with the manufacturer’s instructions and as required by the fire code official 1. Treatment and flaring systems. 2. […]
I was recently asked the following question: I work for a company that uses anhydrous ammonia for emission control. One thing that I noticed is there wasn’t any information on the tank maintenance (integrity testing of the tank etc). We have maintenance plans for all the components associated with the tank but do you know […]
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