Chemical Process Safety (PSM/RMP)

Ammonia Gas Explosion

Explosion at Belle Vue: 2 injured between life and death Tuesday, September 27, 2011, 17:11 An explosion occurred this morning at the Belle-Vue brewery Leeuw-Saint-Pierre. Two people were seriously injured. Their prognosis is engaged. The leak was stopped. An ammonia leak occurred around 8:50 Tuesday when three workers from an outside firm conducted the dismantling of an old installation. ” The…...

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Use of High Visibility Vest in Safety Programs

Have you every walked up on a hotwork job and asked who is the fire watch, only to have five welders not even look up and point to each other? It happens, but there is a simple way to correct this behavioral problem – High Visibility Vests…. Membership Required You must be a member to...

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NFPA 30 offers some GREAT facility siting for NEW process vessels

Anyone involved with PSM/RMP knows about “facility siting” and all the attention it has gotten since the Texas City, TX incident in 2005.  Many companies struggle with this type of analysis, so I am passing along some great data that could be used during an expansion project at an existing facility or for a new…...

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Process Hazards Analysis and “Safeguards”

Over the past several years I have written many articles on the “safeguards” that get listed in Process Hazards Analysis.  In this article I want to focus our attention on the flaws that so many facilities are making in their PHAs.  Some facilities are really doing themselves an injustice by listing safeguards that have little…...

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“Operator Rounds” in a PSM/RMP Covered Process

In many chemical processes around the world, operators are making their rounds checking on those items that have been deemed “critical to process safety”.  These rounds usually include checking pressure, temperature, tell-tale gauges, tank levels, heat tracing, taking samples, etc.  But in many instances involving these checklists, one item is painfully obvious after an incident–…...

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NH3 Unloading Incident (30 Tons Release)

Ever wondered what 10-15 tons of Anhydrous Ammonia looks like when it is released from a busted hose during unloading?  Wondered how big would the cloud be?  How dense is the cloud?  Does the cloud rise or fall to the ground?  Well here are some great shots showing us all these things…. Membership Required You...

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ASME B31.5 Pressure Testing and Leak Testing Requirements for Ammonia Refrigeration Processes

2015 UPDATE: Some of my refrigeration PSM buddies reminded me that the industry now has its own RAGAGEP for piping installation, ANSI/IIAR 4-2015, Installation of Closed-Circuit Ammonia Refrigeration Systems.  I do applaud the IIAR for their work in establishing this ANSI standard for the industry, but for those so happy to “correct me” I like to point…...

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AMMONIA SPILLS IN WISCONSIN 1993-2009

Some interesting data put together each year by the Wisconsin Department of Public Health Services.  2009 is the most recent update to their data.  Here are the summaries: Since 1993, Wisconsin has had 768 uncontrolled ammonia releases, representing approximately 45 releases per year. 445 (58%) of Wisconsin’s ammonia releases involved refrigeration systems. A total of 302 people have sustained injuries as…...

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Establishing your safe upper and lower limits for FLOWS

Most businesses have established their safe upper and lower limits for the most obvious process parameters such as pressures, temperatures, and levels; but in a flammable liquid process involving non-conductive flammable liquids establishing a safe upper and lower limit for flow is an ABSOLUTE MUST.  There is not a Recognized and Generally Accepted Good Engineering…...

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Establishing Safe Upper and Lower Limits

This regulatory requirement is often mismanaged, which oftentimes results in many other related issues within a process safety management system. In this article, I will discuss a methodology a facility can apply in establishing its “safe upper and lower limits.” In this example, I will use process pressure, as it is the easiest to illustrate,…...

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Key provisions of the PSM Preamble

Key provisions of PSM OSHA’s preamble to the PSM Standard goes a long way to provide us insight as to why there are 14 elements to the standard and what each requirement in each element is intended to serve.  The entire preamble is a very long read, but there are some key provisions in Section…...

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Tracking Corrective Actions to closure

A requirement that many think is “common sense” and “simple” continues to appear on 3rd party audit reports and OSHA/EPA citations year after year. So why is something so “common” and “simple” so difficult to comply with? Often times we make something simple to difficult for our own good. In this article I want to…...

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