How times have changed in 30 years regarding “materials of construction” in hazardous materials processes. I grew up in process safety, seeing nothing but metallic piping systems; today, I bet I see piping systems made from non-metallic products upwards of 25% of the time. This is becoming increasingly acceptable in one specific process I do…...
Examination and Testing of NON-metalic piping systems (ASME B31) Read More »
Most PSSR forms we encounter simply regurgitate OSHA’s 1910.119(i)(2). If the user is thoroughly knowledgeable of what each of these four (4) line items entails, we may be able to execute the PSSR appropriately. Let’s look at these four line items, especially the first line. 1910.119(i)(2) The pre-startup safety review shall confirm that prior to…...
What am I saying when I sign-off on the first line of my PSSR? (Piping) Read More »
The two (2) terms sound similar and will conjure up similar images when we hear them, but they are used in the ASME B31 piping standards in very different ways and apply to different groups. To state it very simply, the EXAMINATION is what the owner/operator does to pass the INSPECTION, which is what the…...
ASME B31 Examination vs. Inspection Read More »
An internal failure of a heat exchanger caused ammonia gas to leak through and absorb into the circulating liquid brine for the underfloor loop. The ammonia within the liquid brine spilled out of the expansion tank, pooling within an open sump in the mechanical room. The heat exchanger needed to be replaced as it was…...
Corroded internal tube in Heat Exchanger leads to NH3 release Read More »
Facilitating Process Hazard(s) Analysis (PHA) is one of my favorite process safety skills. From having the honor to be the author of Part II in the CCPS’s Hazard Evaluation Techniques (3rd Edition) to working with several software companies on the development of their PHA products, there is nothing better than facilitating an actual PHA with…...
My visual of how I facilitate PHA(s) Read More »
This is me doing a Process Hazards Analysis (PHA) with my non-American clients who use the metric system!Go ahead and laugh – but know the struggle is real.? ? … Membership Required You must be a member to access this content.View Membership LevelsAlready a member? Log in here...
The struggle is real! (Metric system vs Imperial system) Read More »
Not all “simple asphyxiants” are created equal; thus, not all make for good purging or blanketing. Would you believe me if I told you that one very common simple asphyxiant gas should NEVER be used for purging or blanketing flammable atmospheres? Many folks view Nitrogen (N2) and Carbon Dioxide (CO2) as very similar. This is…...
Inerting a flammable atm is more of a science than art Read More »
Some of the more eye-opening revisions: Outlining STOP-WORK procedures in Program 3 employee participation plans A justification in the risk management plan is required when: hazard evaluation recommendations are NOT adopted facility-siting hazard recommendations are NOT adopted Safer Technology Alternatives Analysis (STAA) recommendations are NOT adopted third-party compliance audit recommendations are NOT adopted A formal…...
At 7:30 p.m. on July 2, 2021, Employee #1, Employee #2, and Employee #3 performed two maintenance tasks in the M2 crude rectification section on the ground and second levels at tower M2-T250 and vessel V-207. On July 2, 2021, during the night shift, three (3) gas monomer chemical operators were exposed to toxic fluorocarbons…...
Line Break gone bad (fluorocarbon) Read More »
A Health and Safety Executive (HSE) investigation into a gasoline overfill of a carbon adsorption vapor recovery unit (VRU) revealed concerns with the VRU’s design. The overfill prevention system was NOT INDEPENDENT of the basic process control system (BPCS). When the BPCS failed, the overfill prevention system also failed. This resulted in loss of containment,…...
Overfill of vapor recovery units (UK’s HSE Alert) Read More »
A boiler maker, 36, suffered fatal burns after an explosion occurred at a refinery. A contractor employed the victim and two injured co-workers at the facility. The three employees were hospitalized as a result of the explosion. The victim died four days later from burns over approximately 90% of his body. The events occurred in…...
Line Break gone bad (Flare and Knock-Out Drum) Read More »
On October 19, 2019, @ 07:15 a.m., a contractor employee was standing on a scissor lift and replacing insulation on the pipes in the engine room of Building 3. As the employee lowered the scissor lift, the walking platform of the scissor lift where a technician was standing struck the service drain valve (3ML 3064)…...
Contractor’s scissor lift causes NH3 release Read More »
