Permit Required Confined Spaces

B.C. firm fined $110K after wood fiber engulfs worker in horrific PRCS fatal incident

A fire ignited inside a silo (a confined space) at this firm’s sawmill, and the water used to extinguish it had frozen the wood fiber inside the silo. While a subcontractor’s worker was pressure washing the fiber inside the silo, a large volume of fiber dislodged from an overhang above the work area. The fiber…...

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OSHA and NFPA have aligned on “the potential” for a HAZ ATM within a PRCS, but would you “reclassify” the space under their guidance?

Both OSHA and NFPA state that if the pipe does NOT terminate within the space, the pipe does NOT have to be evacuated to consider the contents of the pipe a “potential” to generate a HAZ ATM. In a recent OSHA LOI, OSHA used several thresholds that the employer should/must use in its evaluation of…...

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UPDATE on the PRCS (Barge) Double Fatality event in AK

Based on recent updates from USCG and NFPA, we now know that two days after the incident, a marine chemist arrived on the scene in Alaska and tested the atmosphere of the barge involved in the accident. But the atmosphere therein had been sufficiently ventilated to allow firefighters to enter and recover the body of…...

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Failing to CLOSE a PRCS Entry Permit properly can have Process Safety implications months after the entry

As most of you know, PRCS Entry is one of the specific SWPs called out in the PSM and RMP standards. But many programs fail to meet 1910.146(f)(4), and a recent CSB accident report tied the requirement for canceling a permit to a catastrophic explosion event. 1910.119(f)(4) The employer shall develop and implement safe work…...

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What are the LEL correction factors for the top 5 direct reading instruments?

So I asked Google Gemini… What are the LEL correction factors for the top 5 direct reading instruments? I asked this as I wanted a side-by-side comparison of the DIFFERENT correction factors for these five (5) different meters. Some of the variation is 100% greater, so the moral of the story is that when you…...

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So I asked AI… Can I reclassify my combustible dust bag house while its being cleaned out using a vac truck (1910.146(c)(7)

This debate has been going on amongst a number of us, as a friend asked the question. 99% of of agreed – NO, it can not be reclassified when the COM DUST is inside the space. Cleaning it would be a Permit-Entry; once clean AND FREE of the COM Dusts, then we could discuss reclassifying…...

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More clarity on “HOW” & “WHERE” to label PRCSs

Way back in 2015, I shared a practice I have used for most of my career, after working a major turnaround back in the 1990’s. And anyone who has worked a turnaround at a processing plant will certainly understand what I am trying to address with this practice. Bottom line, we should NEVER put the…...

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OSHA Citation Report: Water, Sewage, and Other Systems (2025)

This report summarizes the enforcement activity for the water and wastewater utility sector. During this period, 63 citations were issued across 18 inspections, resulting in $830,945 in penalties. Executive Summary of Penalties and Citations The data indicates that while Hazard Communication and Respiratory Protection are frequently cited, the vast majority of the financial impact stems…...

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OSHA Industry Profile Report: Permit Required Confined Space (2025)

Reporting Period: October 2024 – September 2025 Executive Summary During the FY 2025 reporting period, OSHA issued 309 citations across 112 inspections related to the Permit-Required Confined Space standard (1910.146). Total penalties for this period reached $2,174,234. The data reveal a heavy concentration of enforcement in the manufacturing sector, though the highest average penalties per…...

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Another CS/PRCS discussion that you can comment on…

I am pretty confident in my position, but my friend and one hell of a safety pro has me second-guessing myself. So I thought this would be a good scenario to debate amongst the SAFTENG members. I will not bias the discussion with my position, but I will add mine after a dozen or so…...

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PRCS fatality in silo (MSHA)

This tragedy is a sad example of why OSHA says… Entry … is considered to have occurred as soon as any part of the entrant’s body breaks the plane of an opening into the space. I am not sold on MSHA’s Root Cause Analysis, but we can all learn a lot from this tragedy and…...

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Two sanitation workers die cleaning a sewer in Nuh, one critical (1 entrant, 1 Would-be Rescuers)

Two (2) sanitation workers were killed, and a third was hospitalized in critical condition after they inhaled toxic fumes while cleaning a sewer line. The incident took place around 10.30 pm. The workers were employees of the local Municipality. “Preliminary investigation revealed that the first worker entered the sewer and failed to come out for a…...

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