One often overlooked aspect of a relief valve discharge termination piping system is the scenario that was used at the basis of the piping design. Most designers understand that termination piping must be sized so as to not cause excessive back pressure in the manifold when a relief valve lifts. The question, however, that must […]
Ammonia gets caught upside down in this week’s edition of the Ammonia Week in Review….. Broken Pipe Cause of Anhydrous Leak in Worthington – The Worthington Fire Department, with the assistance of three other local departments, responded to the White River Co-Op just before noon Tuesday to assist with a leaking tank in the lot south of […]
ANSI/IIAR 2-2014 §15.6 outlines the requirements for providing Hydrostatic Overpressure Protection. In situations where thermal hydrostatic expansion of trapped liquid ammonia could occur, hydrostatic protection must be provided. Per ANSI/IIAR 2-2014 §15.6.1, Protection against overpressure due to thermal hydrostatic expansion of trapped liquid ammonia shall be provided for equipment and piping sections that can be […]
Anyone who operates an “older” ammonia refrigeration system in California should be familiar with the requirements of the 1982 Uniform Mechanical Code. Cal/OSHA regulation Title 8 CCR §3248(a) requires the following: “Mechanical refrigeration systems placed in service before March 13, 1999, shall be designed, installed, tested, and maintained in accordance with Chapters 4, 15, and 16 […]
Ammonia makes a brief appearance in this week’s edition of the Ammonia Week in Review…… OSHA Investigating Possible Ammonia Leak at Reser’s Plant – The Occupational Safety and Health Administration is investigating a report of an ammonia leak at the Reser’s Fine Foods plant in Topeka last week. […keep reading] Q&A | Relief Valve Replacement (Dual Assembly) – Question: Do both relief […]
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