Process Safety with Trish & Traci

Trish Kerin breaks down the runaway reaction that triggered a mass evacuation in Orange County, California, and explains what facilities handling reactive chemicals can learn about instrumentation, warning signs and emergency communication. Editor's Note: We mention an upcoming webinar that Trish will be hosting: a webinar focused on leadership in uncertain times — looking at key strategies and tools we can use to navigate some of the challenges we're all facing globally right now. Use the code CPREADER for $5 off.

In this year-end episode, hosts Trish Kerin and Traci Purdum welcome Hayley Little, a U.K.-based process safety engineer who tracks quarterly catastrophic incidents on LinkedIn. The discussion explores origin stories in process safety, the critical gap in fundamental safety knowledge outside petrochemical industries, and the alarming frequency of preventable incidents in lower-hazard sectors. They discuss innovative solutions including AI tools, virtual reality training and social media outreach to democratize process safety education. The conversation emphasizes the urgent need for better university training, field presence over desk work and human factors integration to make it easier to "accidentally get it right."

The Buncefield explosion occurred when a gasoline storage tank overfilled after both its level gauge and independent high-level switch failed. Gasoline vapor formed a massive cloud that ignited, causing significant damage to surrounding business parks. Fortunately, the Sunday morning timing prevented fatalities, though 43 injuries occurred. The incident revealed critical gaps in safety control verification, testing procedures, and maintenance regimes. Twenty years later, the disaster emphasizes the importance of recognizing weak signals, maintaining bund integrity, and ensuring operators actively monitor tank filling operations rather than relying solely on automated systems.

Trevor Kletz revolutionized process safety through HAZOP advocacy, inherent safety principles, learning from accidents, and emphasizing design simplification over complex add-ons. In this episode, Trish & Traci discuss his many contributions to the world of process safety.

This episode explores the critical role of equipment reliability in chemical processing, focusing on three major incidents: Longford, BP Texas City and Buncefield. Trish highlights how faulty instrumentation, poor maintenance and overlooked management of change led to catastrophic failures, fatalities and environmental impacts. The discussion emphasizes safety-critical elements, maintenance KPIs and the importance of accurate instrumentation.

In this episode, Trish Kerin and Traci Purdum discuss process safety insights with Alex Fernando and Warren Smith from Incident Analytics. Their research analyzed over 10,000 incidents across 12 countries and multiple high-risk industries. Key findings include that organizations often misclassify serious incidents, missing critical learning opportunities. Many safety controls are "difficult" or "unworkable" in practice, with workers adapting procedures to get jobs done despite inadequate equipment or impractical requirements. The research reveals a significant gap between "work as imagined" and "work as done." A fundamental shift in leadership thinking needs to take place — from asking "why didn't they follow the procedure?" to "why couldn't they follow the procedure?" References: Whitepaper 1 Whitepaper 2

Mastering Tim Tam timing mirrors process safety's critical risk-reward balance. Get it right and you’ll reap rewards. As the bickie became gooey in my fingers, I knew the moment was now — time to slam that Tim Tam. A Tim Tam is an Australian bickie — or cookie, to those of you in the U.S. It was created in 1964 by Arnott’s and is an iconic Aussie treat. It consists of two rectangular bickies with a flavored cream filling that is coated in chocolate. A Tim Tam Slam is a unique way to consume the bickie. The steps are as follows:

On a sunny summer day in 2007 near Wichita, Kansas, a tanker truck was offloading naphthalene into a stainless-steel tank at a solvent tank farm when the container spontaneously ignited, catching fire and exploding, shooting projectiles in the air. This led to the evacuation of thousands in a nearby community. While there were no casualties, the explosion destroyed the entire storage facility, luckily not causing any injuries or fatalities in the nearby community. An investigation determined that electrostatic charge buildup had caused a spark that ignited a solvent-air mixer in the vapor space in the vessel receiving naphtha from the tanker truck. In this episode, Traci Purdum, CP's editor-in-chief, reads an article from authors Tom Patnaik and Christian Stentzel -- both of Thaletec. The article was published May 21, 2025.