Has your facility submitted a Top Screen to DHS yet? In the recent months, the Department of Homeland Security (DHS) has put forth effort to educate chemical facilities regarding the CFATS regulation. DHS has been sending letters of notification to facilities they believe to have chemicals of interest. Additionally, DHS has spoken at at industry conferences, such as IIAR, […]
Last week, I summarized the requirements from ANSI/IIAR 4-2015 Installation of Closed-Circuit Refrigeration Systems. Today, I’ll do the same with ANSI/IIAR 8-2015 Decommissioning of Closed-Circuit Ammonia Refrigeration Systems Unlike IIAR 4, which had IIAR 2 as its foundation, IIAR 8 is a standard that was essentially written from scratch. The general outline of the document is as […]
After years of hard work, IIAR has recently published two (2) new refrigeration standards: ANSI/IIAR 4-2015 Installation of Closed-Circuit Ammonia Refrigeration Systems ANSI/IIAR 8-2015 Decommissioning of Closed-Circuit Ammonia Refrigeration Systems In this blog and the next, I will summarize each of the standards and provide excerpts that are important to be aware of. Be sure […]
Question: Do both relief valves on a dual assembly have to be replaced every five (5) years, or just the relief valve that has been subject to system pressure? Answer: Most pressure vessels in an ammonia refrigeration system exceed 10 cubic feet in volume (normal exceptions are oil pots and small oil separators), and therefore are […]
Question: If two independent ammonia refrigeration systems share a water diffusion tank should they be considered one (1) or two (2) processes under RMP and PSM? Answer: This is a great question that addresses the issue of “co-location“. In order to correctly answer this question, we must first consider the definition of a Process. Title 40 §68.3 Process means […]
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