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.

In this episode, Trish Kerin reads her most recent column, which highlights the importance of immediate communication in safety situations, even when complete information isn't yet available to share. You can read the column here.

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.

When OSHA's Process Safety Management (PSM) standard took effect in 1992, it promised a new era of systematic hazard identification. Three decades later, process safety professionals are still witnessing the same critical oversights repeatedly compromising facility safety—oversights that have contributed to near misses, and far worse, major incidents. Editor-in-Chief Traci Purdum reads an article from Felicia Miller, senior principal engineer at ABSG Consulting and Darshankumar Lakhani, senior manager in engineering at ABSG. Original article: https://www.chemicalprocessing.com/safety-security/risk-assessment/article/55311485/hidden-hazards-10-common-pha-oversights

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.

Workers who challenge flawed procedures can improve safety and production. In this episode, Trish Kerin reads her latest column, which details how a trip to Tasmania with her sister turned getting lost into a process safety lesson of not blindly following procedures.  Enjoy as our favorite Australian safety guru guides you through the Bass Strait to Cataract Gorge.

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 

This episode revisits the critical topic of permit-to-work systems, exploring how these systems manage the safe transfer of equipment ownership between operations and maintenance teams. Trish & Traci discuss key elements, different permit types, common failures, and the tragic Piper Alpha disaster.

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:

This 100th episode of "Process Safety With Trish and Traci" examines the 2003 Space Shuttle Columbia disaster through the lens of due diligence. Columbia disintegrated during re-entry after foam debris damaged heat shield tiles during launch. The podcast explores how NASA normalized foam strikes over time, turning "lessons of failure into memories of success." Multiple intervention opportunities were missed due to inadequate resources, poor communication, and cultural barriers.

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.

Risk assessment should still be a manual process, but AI can streamline data collection to enable sound engineering judgments. In this episode,  Trish and Traci welcome guest Dheerajkumar Narang, whose research examines how AI and machine learning can enhance process safety compliance. Traditional compliance methods are time-consuming and fragmented across different systems, while AI can automate data collection, identify leading indicators and predict compliance outcomes. Key challenges include system integration with legacy infrastructure and maintaining domain expertise for regulatory updates. AI should streamline processes to allow operators to focus on critical tasks.

In this episode, Trish and Traci discuss the catastrophic failure at Queensland's Callide Power Station C4 on May 25, 2021, which caused power outages for 470,000 people.  During a routine switching operation to replace DC battery systems, a voltage drop was misinterpreted as an AC fault, triggering a cascading failure. Both AC and DC systems failed, leaving the turbine without lubrication while it continued spinning backwards at 3,000 RPM. The incident demonstrates that process safety principles apply beyond traditional chemical plants to any high-hazard environment. Key lessons include proper hazard identification, functioning safety controls, and maintaining culture, leadership, accountability and governance in safety management.

This In Case You Missed It episode brings the written word to life. Today, Trish Kerin, the director of Lead Like Kerin, and Stay Safe columnist for Chemical Processing, will read her column “Wield Questions to Learn and Teach”  “Curiosity killed the cat, but satisfaction brought him back.” – A proverb made modern by Eugene O’Neill. Have you ever asked a question at work and were surprised by the answer? Over the course of my career, this has happened many times. Sometimes, the answer was genuinely new to me. Other times, I was surprised that someone thought the answer they provided was legitimate. In both cases, I learned something.  Written By: Trish KerinRead By: Trish Kerin Read Article HERE 

Remembering the human toll of Texas City and Deepwater Horizon and applying those lessons learned can prevent similar tragedies. In this episode, Trish and Traci discuss two major BP incidents: the 2005 Texas City Refinery explosion that killed 15 workers when an overfilled tower created a geyser of hot raffinate that ignited, and the 2010 Deepwater Horizon explosion that killed 11 workers and caused the largest U.S. marine oil spill when cement failed to properly seal a well. Key factors included faulty equipment, misleading indicators, inappropriate safety messaging and failure to learn from near-misses. These tragedies led to industry-wide improvements, including standardized process safety metrics, occupied building risk assessments, and better hazard management.

Have you ever done a double-take when looking at an inspection photograph? I certainly did when an engineer at a valve manufacturer sent me an inspection photograph and asked, “See anything wrong with this picture?” “Yeah,” I replied. Someone had installed two expansion relief valves back-to-back on the body bleed of a twin-seated plug valve used for isolation in our gasoline tank farm. The valve casting safety port was cracked because expansion flow was choked. “Dumb, really dumb,” I remarked. How did this get by?

In this podcast, Trish and Traci discuss the importance of storytelling in process safety. Trish shares two influential stories from her career and personal life. She outlines effective storytelling using the "four Cs": context, conflict, conclusion, and call to action. She emphasizes starting with a memorable moment to engage audiences, matching tone to content gravity, and personalizing stories.

Welcome to the In Case You Missed It edition of Process Safety with Trish and Traci -- the podcast that aims to share insights from past incidents to help avoid future events.  This In Case You Missed It episode brings the written word to life. Today, Trish Kerin, the director of Lead Like Kerin and Stay Safe columnist for Chemical Processing will read her column “An Engineer’s Process Safety Evolution.” 

A former Formula One engineer has developed an AI copilot that can suggest questions, reference incident databases and provide support. But don’t worry,  humans still have the last word.

Safety experts share strategies to revitalize job hazard analysis programs. A piece of paper won’t save your life, but what’s on that paper could.   Trish and Traci, along with guest Valerie Stakes, discuss five steps to improve job hazard analysis (JHA) programs: honest program evaluation, form clarity, embedding JHAs in other documents, improved training and increasing visibility through collaboration.