Chemical Process Safety (PSM/RMP)

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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Ammonia release via RV

Executive Summary: Minor non-permanent injuries (to two operators), and more severe injuries to a third employee resulted when ammonia refrigerant vapor was released from a safety valve on the outdoor refrigerant condenser. Equipment failure, ambient conditions, inadequate staff training contributed. A certificate of inspection was issued with follow-up. A complete plant survey was conducted and additional certificates of inspection issued…....

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PSM, Flammable Liquids, & Secondary Containment

As many of you know I have written extensively about flammable liquids safety, a true passion of mine within the safety field.  But there is this SMALL detail that too many facilities are overlooking, but relying on in a very BIG way.  Secondary Containment, or a “dike” as it is often called.  Here are just…...

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Current EPA plans call for the re-establishment of internet access to the non Off-site Consequence Analysis (OCA) sections of the RMP database beginning in July of 2012

As you know, EPA regulates certain hazardous chemical facilities under 40 CFR Part 68 – known as the EPA Chemical Accident Prevention or Risk Management Plan (RMP) program.  EPA is aware that state and local communities are major stakeholders in the RMP program, and as such the Agency would like to alert you to a…...

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