Safety Info Posts

Explosion of an alcohol tank inside a vinegar plant

Inside a vinegar plant, a 150-m³ tank containing 38.5 m³ of an alcohol vinegar mixture exploded around 9:40 am. The 3,000-m² site had been in activity start-up mode, but engineering works were still underway. The tank bottom became detached from the shell. It’s upper part, measuring 13 m high, 4 m in diameter and weighing some 3.5 tonnes, was…...

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Hydrogen chloride release following a maintenance operation

Ten kilos (22 pounds) of hydrogen chloride gas was released from a flange that had been fitted by a contractor just a few weeks earlier, triggering alarms and resulting in an internal emergency intervention. The incident had no significant consequences.  A contractor performing maintenance was instructed to remove the pressure sensor from a device and replace it with…...

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Explosion of an underground solvent storage tank during a maintenance operation

A contractor at an upper-tier Seveso plant was cleaning an underground tank so that it could be filled with a different product. The tank was located in an outdoor area comprising 12 horizontal underground multi-compartment tanks, each having an overall capacity of 60 m³ (nominal compartment capacities of 10, 15 and 35 m³) and containing flammable liquids (solvents…...

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Phosgene discharges in a chemical plant (IMPEL)

At around 11:00 p.m., phosgene (COCl2) and chlorobenzene began leaking inside the containment building of a chlorinated chemicals plant. The leak was detected at levels between 13 and 22 ppm by analyzers inside the containment. The analyzers’ control system automatically directed the air inside the containment towards the caustic scrubber. Technicians began looking for the cause of the leak.  While one of…...

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The use of sulfur stick to find a CAT 2 Flammable Gas Leak comes with some inherent hazards (Video)

The irony in this post is thick with sulfur smoke! SAFTENG Members can read my 2012 article Sulfur sticks and ammonia leaks… are you in compliance when using these leak detection devices? This video shows us what happens when we introduce a lit sulfur stick into an NH3 gas leak.  Imagine someone doing this in a…...

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Process Safety MANAGEMENT

Words still mean something!  There is a reason why OSHA (and EPA) use the word “Management” in the titles of their process safety standards.  Sorry to state the obvious, but the standards are NOT called “process safety managER” for a really good reason.  I have been serious about process safety since 1993 and the one…...

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2019 ASSP Conference Presentation – Myths and Misconceptions of CS/PRCS

SAFTENG Members can get a sneak peek at our presentation before Wednesday.  Come and see Jonathan and I present our Top 10 Myths and Misconceptions or to just say Hi and catch up.         Misconception #1 1910.146 applies ONLY to General Industry workplaces and 1926.1201-.1213 applies ONLY to Construction worksites Misconception #2 Anyone…...

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EPA RMP Citations @ maintenance product manufacturing and supply facility (Vinyl Acetate & $46K w/ $72K SEP)

Respondent owns and operates a cleaning and maintenance product manufacturing and supply facility where greater than 15,000 pounds of vinyl acetate monomer in a process at its facility. On or about April 4-5, 2017, EPA conducted an inspection of Respondent’s facility to determine compliance with Section 112(r) of the CAA and 40 C.F.R. Part 68…....

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OSHA PSM citations @ food packaging facility (NH3 & $95K)

OSHA has cited a food facility after a worker required medical treatment due to an anhydrous ammonia leak in the packaging house.  OSHA found issues with the Emergency Action Plan and Employee Alarm System,  RAGAGEP compliance with IIAR standards, PSM Initial and Refresher Training, HAZCOM Training, PSM Incident Investigation Procedures,  Lack of an Emergency Response Plan…...

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Anhydrous Ammonia Exposure Event (Line Break Gone Bad – RV change out @ power plant)

An ammonia storage tank was taken out of service for its 10-year non-destructive examination. After the tank was purged and opened, two (2) contractors were removing two (2) relief valves for their 5-year inspection and tests. The two (2) relief valves are 8 bolt flanged connected to a wye piping fitting equipped with a selector valve (as…...

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Anhydrous Ammonia nitrogen stabilizers need an MOC and PSSR in the fertilizer industry

Back in December 2017, I wrote about a change in the Anhydrous Ammonia fertilizer industry that would most likely require the industry to perform an MOC and PSSR. (A new grade of anhydrous ammonia fertilizer means a MOC, PSSR, etc.)  Now that the product has received its official approval and has found its way into the…...

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OSHA’s Spring Regulatory Agenda

Below are the items on OSHA’s regulatory agenda.  I have posted their scope on the standards that play a major role in the facility’s I do work in and links to all of the other items for those of interest to you…. Membership Required You must be a member to access this content.View Membership LevelsAlready...

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