Chemical Process Safety (PSM/RMP)

One of the top questions newcomers to process safety ask is, “Why do I have to have a written procedure to remove and install new relief valves?”From the EPSC Learning Sheet October 2024What Happened:The bonnet vent in a Balanced Bellows Pressure Safety Valve (BB-PSV) was found in service, but still fitted with a shipping plug…....

A lot of folks recognize the need for mechanical exhaust ventilation in areas where there is a flammable and toxic exposure hazard.  The general rule of thumb for this mechanical exhaust ventilation is 1 CFM per square foot of floor space with at least six air changes per hour.  But there are two (2) other…...

On November 1, 2022, at 12:45 p.m., an employee, 30, was installing heating, ventilation, and air conditioning (HVAC) equipment at a residential building. When the employee was pressure testing a pipe fitting, an object flew off the HVAC unit and struck the employee in the face and head. The employee was killed by blunt force…...

I was raised in process safety, with a focus on flammables, and I was taught that one thing you just don’t allow into your flammable process is plastics! But even I was unaware of how much plastic I had always overlooked, which was right under my nose, such as my LOTO tags. New Hazard –…...

A BLEVE at a gas station in Russia killed at least four (4) people. Several excellent videos have been shared with our membership and me…. Membership Required You must be a member to access this content.View Membership LevelsAlready a member? Log in here...

The process in progress at the time of the event was the manufacture of methatrexate, an anti-cancer drug. Shortly after employee #1 began to draw bromine liquid into the supposedly clean and empty charging pot, he heard a hissing sound. He then saw a purple haze spewing out from under the lid of the pot…....

An explosion occurred inside a mobile trailer containing five (5) gas-fueled clothing dryers at a fruit orchard and processing facility. The blast caused damage to the building, and the facilities manager, who was inside when it took place, received burns and contusions. In 2019, the gas-fueled clothing dryers were installed and converted from natural gas to…...

In recent years, we have seen many facilities begin to fill their own PIT LPG cylinders on-site rather than contract this service out. Typically, we find this “change” was poorly managed: no PPE Hazard Assessment, no (or very poor) training on the task, LPG improperly located, improper electrical classification around the LPG tank and the…...

During my time in the process industry, we usually had a “caustic scrubber” attached to our PSM/RMP covered process(s).  This meant this scrubber was “part of” the covered process.  I get a lot of pushback regarding covering “safety critical utilities” that are in place to either PREVENT, PROTECT, or MITIGATE an event from the covered…...

We routinely discuss the challenges and risks of performing Line/Equipment Opening (LEO) tasks, with one of the top 5 challenges being the “means used to verify” the pipe/equipment is at a Zero-Energy-State (ZES).  The factors that occurred in this incident probably happens by the hour in the process industry; it is why we ALWAYS have…...