One of the top questions I get in my process safety circles is… Do we have to pressure test/leak test piping that has been opened/modified before we re-introduce the HHC/EHS to the piping? I turn to one of my favorite sources for RAGAGEPs, NFPA, and one of the best NFPA codes is NFPA 58, which…...
“Leak Checking” new and modified piping Read More »
Processes that handle Liquified Pressurized Gases are required to have Hydrostatic Relief Valves on liquid piping where the liquid can be trapped. Much like vapor/gas phase Pressure Safety Valves, it is frowned upon when we have an intervening valve under the PSV. However, many codes today ALLOW us to install a 3-way valve below the…...
3-Way Valve under Hydrostatic RV? Read More »
Last week I posted the investigation findings from a triple fatality event near my hometown that was caused by a 70+-year-old LPG cylinder that was 33 years PAST its recertification/requalification date AND was overfilled. Now the BSEE has shared a SAFETY ALERT regarding a Nitrogen Compressed Gas cylinder that catastrophically failed injuring three (3) workers…...
The explosion at an auto repair shop in Hillsboro, OH that claimed the lives of three (3) workers, aged 19, 33, and 47 in 2023 has been determined to have been caused by a rupture to an LPG cylinder that had been overfilled and past its requalification date by 33 years. I would also like…...
The Ohio Department of Commerce, Division of State Fire Marshal (SFM) is in the process of updating all chapters of Ohio Administrative Code sections 1301:7-7-01 – 1301:7-7-80, collectively known as the Ohio Fire Code (OFC). When the update process is complete, the new 2025 OFC will be adopted and is currently anticipated to take effect in…...
Proposed changes to the OH Fire Code Read More »
A video I posted over two years ago has come full circle. A citizen (some may call him homeless) was allowed to sit (and smoke) within 20′ of a gasoline tanker unloading operation at a gas station. His actions may not have been his sole demise, as we can see in the video evidence that…...
Failing to control flammable vapor results in severe injuries for by-stander (video) Read More »
A soft drink manufacturer had a 3-ton capacity carbon dioxide (CO2) receiver tank at the plant. The tank contained 2000 pounds on the day of the explosion. The establishment was evacuated due to flooding river waters in the area. The plant was secured and evacuated. No employees were at the workplace. Suddenly, the storage tank…...
CO2 Tank launches 100′ off-site into a home (Flood Waters) Read More »
On September 19, 2002, Employee #1 was painting one (1) of six (6) tanks containing carbon dioxide when three (3) of them suddenly exploded. He was killed. The tanks were originally built as railroad tank cars for liquefied petroleum gas and they were not designed to store carbon dioxide…. Membership Required You must be a...
It has grown tiresome, but it remains a teachable moment, to debate “engineers” who want part of ASME/NBIC to be the gospel and other parts not so much. The ammonia refrigeration industry just can’t seem to grasp the critical need in their “Common PRV Header Design” v.s. having more “holes in the roof” (as they…...
The National Board on “intervening valves” in the PRV path (Car Seal) Read More »
Recently I was asked if “torquing” threaded pipe is required by code. I answered the inquiry by referring the client to ASME B1.20.1-2013, which states: 1.4 Sealing (NPT and NPSC Only)…1.4.3 Tightening Torque.Due to application-specific variables such as materials, wall thickness, operating pressures, etc., no guidance is given in this Standard regarding joint-tightening torque. However,…...
Threaded Piping Connections and Hazardous Materials Read More »
Another incident where the lack of respect for static electricity and flammable atmospheres results in severe injuries. A Teflon bristle brush generates a lot of static electricity; coupled with the low flashpoint of Naptha (73F) and we have a serious hazard. At 5:30 a.m. on February 24, 2020, an employee, 42, was scrubbing interior surfaces…...
FACT: Most flammable liquid vapors have a Minimum Ignition Energy (MIE) of less than 1 millijoule (mJ). Most of us do not even feel static which is less than 15 mJ. So the amount of energy necessary to ignite most flammable vapor atmospheres is not even observable by humans. At 6:15 p.m. on October 30,…...
Switch Loading + Static Electricity = Fatal Burns Read More »
