Shenyang Petrochemical Company “The Big Poisoning Accident“ The gas sub-device of Shenyang Paraffin Chemical Company suffered a poisoning accident during the maintenance and construction process, resulting in three (3) Deaths. The immediate causes of the accident were: When the operator carried out the blind plate swapping operation at the pump relief blind plate, the operator […]
I get it, it’s a 19-second video, and it will probably stir more questions than responses, but this topic is one that needs MUCH discussion. I have made this page FREE for anyone who wishes to chime in. A couple of items to consider: So what say you? We can discuss this in the comments
Establishing a Double Block and Bleed (DB&B) positive isolation is a critical safety protocol when preparing piping and equipment for opening, especially when dealing with Extremely Hazardous Substances (EHS). This process ensures that hazardous materials (HAZMAT) are effectively evacuated and isolated to protect workers from accidental releases. Members can download my .ppt file at bottom
As with my NH3 article, I wanted to verify and document the same scenario for scrubbing 1 pound of Cl2 with 50% Sodium Hydroxide (NaOH). Here is what Gemini+ had to say… When Chlorine (Cl2) gas is safely scrubbed with Sodium Hydroxide (NaOH), the reaction produces sodium hypochlorite (bleach), sodium chloride (salt), and water. Bottom
As I have written many times, our bulk chemical transfer hoses MUST be part of an Inspection and Testing Program. These tests follow the same logic as pressure testing piping, and Hydrostatic Testing is far safer than pneumatic testing. So I asked Google Gemini+ to show me the difference in failure energies to demonstrate this
To determine the internal static overpressure generated by the catastrophic failure of a liquid Nitrogen (LN2) dewar, we look at the physics of a Boiling Liquid Expanding Vapor Explosion (BLEVE) and the resulting rapid phase transition.
So I asked Google Gemni + to calculate the pressure wave in a room that is 40′ X 40′ X 20′ tall with the catastrophic failure of a 1-ton chlorine cylinder. In a 32,000 ft3 room, we must determine the volume of gas released during the “instantaneous flash” and the resulting internal static overpressure.
DISCLAIMER: This is a “cheat sheet” for safety professionals to get a general idea of the “safe distances.” ALWAYS refer to ASME PCC-2, Mandatory Appendix 501-III) for the exact distance. Just understand, ALL pneumatic pressure testing REQUIRES a “safe distance”. According to ASME PCC-2, Mandatory Appendix 501-III, determining safe distances for pressure testing—specifically, pneumatic testing—requires
Tentative Interim Amendment (TIA) 27-1 refers to a significant update to the 2027 Edition of NFPA 30: Flammable and Combustible Liquids Code. Issued on April 15, 2026, with an effective date of May 5, 2026, this TIA (Log #1886) was processed by the Technical Committee on Flammable and Combustible Liquids to address safety gaps regarding
Under Cal/OSHA’s Process Safety Management (PSM) standards (specifically Title 8 §5189.1 for refineries and §5110.16 for other facilities), the Hierarchy of Hazard Control Analysis (HCA) is a formal, documented requirement that goes significantly beyond the traditional OSHA “inverted pyramid.” While standard safety protocols often treat the hierarchy as a suggestion, Cal/OSHA makes it a mandatory
The revised Heat National Emphasis Program (NEP), relaunched on April 10, 2026, represents a major shift in how OSHA handles heat-related enforcement. This isn’t just a renewal of the 2022 program; it is a full five-year directive (running through 2031) that gives inspectors more power to enter workplaces without a prior complaint. OSHA no longer
The 2027 edition of NFPA 30 introduces significant structural and technical updates designed to improve clarity, streamline protection requirements, and integrate emerging safety technologies. Here are the primary changes professionals need to know.
