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. 

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. 

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.