Safety Info Posts

OSHA cites retail business distribution center with multiple serious PSM violations (NH3 refrigeration)

OSHA has cited a discount retailer with 19 serious safety and health violations at the company’s distribution center that are related to process safety management, including exposing workers to anhydrous ammonia while storing frozen products in refrigeration units. OSHA’s inspection was initiated as part of the agency’s national emphasis program on process safety management for…...

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Hotwork, the 35′ Rule, UPDATED loss data, and changes in NFPA 51B and at CAL-OSHA

Anyone who works at a business that has a formal hotwork program can recite the distance at which all fire safety requirements must be in place… 35′.  But this 35′ is a “magical number” to many who use it on a daily basis.  Don’t believe the number is “magical”?  Just go out and ask your…...

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Putting Seward, IL 38,000 NH3 release into some perspective

Most have seen the amazing CCTV footage from the 2007 ammonia release from the ag business in Seward, IL, but those two videos leave a lot of questions.  This posting is a follow-up video regarding the trucking company’s clean-up plan and contains a news video that gives us some perspective on the area’s layout.  In…...

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Can Stress Corrosion Cracking (SCC) occur in Ammonia Piping?

I have discussed Stress Corrosion Cracking in refrigeration vessels and have been asked “if it can occur in vessels, can it occur in our piping too”.  The short answer is YES.  But I want to state again, I am NOT a metallurgist and I am not the person to contact about your SCC concerns.  I…...

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Flixborough… the beginning of the PSM movement

Unfortunately there are countless industrial disasters that led up to the USA’s version of Process Safety Management standards from both OSHA and EPA; but in my world of flammable liquids and gases, it was Flixborough that resonated with me.  It just seemed that every process safety or flammable liquids/gases training that I attended Flixborough always…...

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VIDEO UPDATE on Fatal HF Release – 5 Dead 18 Injured

UPDATED on 6/4/2016  – Police investigating the accident said that the hydrofluoric acid spill might have been caused by human error as two workers unloaded the chemical from a delivery tanker. A closed-circuit security video camera recorded the two workers on top of the tanker without protective gear. They connected an air hose to a valve…...

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Sizing my Boilers PSV Vent Line (it MATTERS!)

In the world of boiler PSV design, the “length” of a vent line is less about a specific length in feet and more about BACKPRESSURE. According to ASME Section I (Power Boilers) and Section IV (Heating Boilers), the moment you add a vent line to a Pressure Safety Valve (PSV), you are introducing flow resistance…....

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2012 Video of the Week #41 (Safety Humor)

A little skit to bring a smile to our faces.  We all have employees (bless their hearts) that would struggle with this word game! (BTW – no offense to my friends in the great state of TX)  … Membership Required You must be a member to access this content.View Membership LevelsAlready a member? Log in...

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