The following are my tips to ensure PRCS are properly ventilated when necessary. Far too often, ventilation is nothing more than a “nice effort,” which can lead to disastrous results. So, in my time in safety at petrochemical and semiconductor facilities, the safety team managed the ventilation equipment (blowers and flexible ductwork). Still, the entry…...
PRCS program tips for Ventilation Read More »
I was working on another PRCS Entry program this week and thought I would offer some tidbits I include in my programs regarding: My programs are lengthy and are intended to include every aspect of managing the risks associated with working around and inside PRCSs. SPACE ISOLATION ALL connections to a confined space that can…...
PRCS program tips for Space Isolation & Air Monitoring Read More »
If you really want to get a feel for the culture around safety, STOP with the surveys and get with today’s technology Three of my five bosses throughout my career all had this same practice, which is far more telling than a “survey.” And with today’s technology, such as cameras and drones, there is a…...
[My] Safety Thought of the Week Read More »
“… an attitude of frustration or an internal state of distress can certainly influence driving behaviors, and vice versa. Indeed, internal (unobserved) personal states of mind continually influence observable behaviors, while changes in observable behaviors continually affect changes in person states or attitudes. Thus, it is possible to “think a person into safe behaviors” (through…...
In process safety, we spend a lot of time discussing the PRIMARY containment systems; however, our secondary containment systems play a vital role in our PROTECTION and MITIGATION layers of protection. Of course, we want to keep the tiger in its cage, but we also need to be prepared for the day it gets loose,…...
Proof Testing of Secondary Containment Systems (diking) Read More »
It never ceases to amaze me how businesses will cut corners in fundamental safety protections. Recently, I came across fire extinguishers that were not “approved” by a Nationally Recognized Testing Laboratory (NRTL). This was discovered during a 5-year REVAL PHA after the facility suffered a failure of one of its extinguishers that caused damage to…...
Are your Fire Extinguishers “approved” by a NRTL? Read More »
Following the investigation of a natural gas explosion in Loudon County, Virginia, in 1998, the National Transportation Safety Board (NTSB) recommended (Recommendation P-01-002) that PHMSA require that excess flow valves be installed in all new and renewed gas service lines, regardless of a customer’s classification, when the operating conditions are compatible with readily available valves…....
Excess Flow Valves in your home’s gas line (49 CFR Part 192) Read More »
When we encounter a manufacturing facility that has been pulled into OSHA’s PSM or EPA’s RMP, we are almost certain to find the same design features for the emergency stop functions (i.e., E-Stops). Most of these facilities are shocked to learn there is a big difference between the location of an E-Stop on a machine…...
Emergency Stops: Machinery Safety vs Process Safety Read More »
I believe in Excess Flow Valves and Check Valves, even though I have seen them fail more often than work as hoped. However, these failures are “human failures” in the incorrect design (e.g., sizing and placement) of the process where these valves are utilized. The valves are highly reliable when they are DESIGNED, INSTALLED, and…...
Some Excess Flow Valves (EXFVs) models can be placed into a position that would render them useless in their intended function. I have encountered this scenario more than once during my PHAs, Investigations, Audits, etc. There are not many manufacturers that incorporate this failure mode in their designs, but there a couple that do; and…...
Some Excess Flow Valves (EXFVs) may require a “Car-Seal” Read More »
What prevents excess flow valves from closing when the line breaks? There are plenty of things that can prevent EFVs from operating as designed. These include design failures, mechanical failures due to poor or no maintenance, and “human failures.” 1. Not a Clean Break For one or a combination of the following reasons, excess flow…...
Common Failures causing Excess Flow Valves (EXFVs) to NOT close when desired Read More »
I am aware that NFPA 58 applies to LPG installations; however, with the “dumbing-down” of many RAGAGEPs, I am always looking for the BEST DESIGN for my process safety functions. I do wish the IFC would define/quantify where remote activation stations must be, as they did decades ago. But for now, I use NFPA 58,…...
NFPA 58 offers a great design for remote activation devices Read More »
