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I am proud to announce that SAFTENG and The Chlorine Institute have renewed our partnership for another year (through 2026).  Members of The Chlorine Institute receive a FREE SAFTENG membership.  If you qualify, please contact me

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The APR "change-out" schedule
This aspect of respiratory protection is a SAFETY CRITICAL path when using Air Purifying Respirators (APRs), and in my experience, it is rarely done correctly when it is done at all. I teach my program administrators to do precisely what NIOSH has been stating since 2004. When using the Change Out software, use 1 ppm below the IDLH of the chemical. The software will not allow us to establish a change-out...
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The GHS and Vapor Pressure
Vapor pressure: Pressure exerted by a saturated vapor above its liquid in a closed container. Three facts are important to remember: Vapor pressure of a substance at 100°F will always be higher than the vapor pressure of the substance at 68°F (20°C), Vapor pressures reported on SDSs in millimeters of mercury (mmHg) are typically very low; 760 mmHg is equivalent to 14.7 pounds per square inch...
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Human Factors Exercise (Boat in Lock Video)
Part 1: Is the act shown in the video an: Error? Mistake? Or Violation? Keep in mind that we all make errors, mistakes, and commit violations. Part 2: Which class of error, mistake, or violation? Tips to help: … HomeRead More »
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Trick Question: When can we see an invisible hazardous gas?
We can see some hazardous gases, even at low concentrations, such as Chlorine (Cl2). But some hazardous gases are “clear/invisible”. So, using Anhydrous Ammonia (NH3) as our hazardous gas… What does 300 ppm of Anhydrous Ammonia (NH3) look like? Note: 300 ppm is the IDLH for NH3 For example, there’s a release of NH3. You can see a white cloud in the release area. But NH3 is a “clear gas.” So, when...
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Case Study: Hiring Unauthorized Personnel Causes Risk of Explosion at Printing Plant (TSSA)
During the summer of 2023, a potential explosion was averted at an industrial facility in Southern Ontario. A new printing press, not approved for use in Canada, was installed and started to signal operational issues during testing. Further complicating the matter, an unauthorized individual tampered with the gas meter set, creating an unsafe environment and posing a significant risk of explosion or...
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Case Study: Unnoticed Corrosion Causes Ammonia Leak at a Cold Storage Facility (TSSA)
In the spring of 2024, emergency responders responded to an ammonia leak at a cold storage facility in southern Ontario. The incident occurred on the roof, where a corroded shut-off valve on the hot gas line of an ammonia center evaporator failed, resulting in the release of ammonia gas into the surrounding environment. The cold storage facility handles perishable goods for distribution across the...
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EPA RMP Citations @ aerosol propelled adhesive facility (LPG/Butane & $100K)
The Respondent’s July 23, 2019, RMP submission outlines a maximum inventory of the regulated flammable substance butane and LPG at the Facility that exceeds the threshold quantity of 10,000 pounds of butane and LPG as outlined in Table 3 at 40 C.F.R. § 68.130. Respondent’s aerosol-propelled adhesive process at the Facility was, at the time of the Inspection, and is, a “covered process,” as that term...
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Understanding IDLH
There are more than 380 substances with IDLH limits. View the current list of substances with IDLH. You can also find IDLH values in CAMEO Chemicals or in the online version of the NIOSH Pocket Guide(link is external). IDLH limits were primarily established to aid in making informed decisions about respirator use. Above the IDLH, only supplied air respirators should be used; below the IDLH, air purifying...
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Emergency Response and the state of NJ's Right to Know Hazardous Substance Fact Sheets
FYI… the state of NJ’s Right to Know Hazardous Substance Fact Sheets are the bomb and with WISER gone, these move up to my #1 go-to ER document. We need three (3) reliable sources to formulate our Incident Action Plan (IAP) that includes our PPE Hazard Assessment. These Fact Sheets, NIOSH’s Pocket Guide Book, and the SDS are usually my three (3). However, SDSs are becoming not worth...
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Pressure Vessels and SIF
As we have discussed many times, I am a strong advocate of the SIF approach to risk management. Growing up in the PSM arena, we realize that the entire process safety effort is built on the SIF model. However, for those unfamiliar with managing catastrophic risks, SIF can become just another “flavor of the year” safety parade. However, for those seeking a topic to build their SIF efforts, there is...
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The OSHA HAZWOPER requirement 99% of Industrial facilities fail to meet
There is one requirement in the HAZWOPER standard that has been in place since its promulgation, which almost every industrial facility with its own internal HAZMAT response team fails to meet. I receive a significant amount of pushback when I cover this OSHA minimum requirement, and I am always as shocked by the response as the facility is to learn about the requirement. … HomeRead More...
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What is the "Shingle" effect, and WHY is it so critical in PPE usage?
If we pay close attention to PPE pictures, especially at Emergency Responses, we can see that this critical aspect of proper PPE donning is usually not followed, placing responders at increased risk. So, what is the PPE Shingle Effect, and WHY is it REQUIRED? … HomeRead More »
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