Dia de los Muertos: Remembering the Dead

“Those who cannot remember the past are condemned to repeat it.”  — George Santayana Our offices on Cherokee Street exist in the midst of a vibrant Hispanic community. So here in our neighborhood, Dia de los Muertos is in getting in full swing and will be observed through November 2. Dia de los Muertos, the [...]

Size Matters: Sampling for PSM Compliance Audits

“Facts are stubborn things, but statistics are more pliable.”  — Oscar G. Foellinger, 1927 As an engineering student, I once used empirical data to solve a design problem. The approach gave a reasonable answer, but my professor scolded me. “Mere curve fitting,” he sneered. “Good engineering requires working from first principles.” I didn’t agree then, [...]

By |2019-10-24T15:20:35+00:00October 24th, 2019|Process Safety|0 Comments

Someone Else’s Experience

“Experience: that most brutal of teachers. But you learn, my God do you learn.”  — C.S.Lewis We all learn from experience. When it comes to brutal lessons, though, it is better to learn from someone else’s experience.  In the course of our work, clients have shared some experiences with us that everyone can learn from.  [...]

By |2019-09-26T13:14:16+00:00September 26th, 2019|Process Safety, Workplace Safety|0 Comments

PSM Auditor: Coach or Umpire?

“Umpires don’t make the rules.  They apply them…They make sure everybody plays by the rules.  But it is a limited role.  Nobody ever went to a ballgame to see the umpire.”  — Supreme Court Chief Justice John Roberts A call about doing a PSM audit usually begins with a question from the caller about whether [...]

More Than Three? Limits to Redundancy

“How can you trust a man who wears both a belt and suspenders? The man can’t even trust his own pants.”  — Henry Fonda as Frank, in Once Upon a Time in the West There’s a cliché in the movies that involves a paranoid urban apartment-dweller with a dozen or more locks, deadbolts, chains, and [...]

Shelter-in-Place: What the Community Should Know

“By failing to prepare, you are preparing to fail.”  — H.K.Williams On July 18, 2019, two people were injured after a chemical fire broke out at Diamond Chemical Company in East Rutherford, New Jersey.  At least one of the chemicals involved in the fire was chlorine, which is poisonous, especially as a gas.  When it [...]

By |2019-09-05T13:36:34+00:00September 5th, 2019|Chemicals, Process Safety|0 Comments

Seven Questions: The Essence of HazOps

“A prudent question is one-half of wisdom.”  — Francis Bacon There are about a gazillion “best” ways to do HazOps. What they all have in common, however, is that they use worksheets that are set up as tables that look at deviations in a node. For each deviation, a HazOp team considers “Causes”, “Consequences”, “Safeguards”, [...]

By |2019-08-29T14:38:07+00:00August 29th, 2019|PHA, Process Safety, Process Safety Management|0 Comments

One Small Step

“If we can put a man on the moon, why can’t we…”  — Nearly Everyone Fifty years ago, humans first walked on the moon. It was and remains a remarkable and courageous feat of technology and determination. Having achieved it, though, most of society lost interest and moved on. Humans haven’t been back on the [...]

By |2019-07-18T13:47:20+00:00July 18th, 2019|Current Events, Process Safety|0 Comments

Yes, But…Hardware Fault Tolerance

“Therefore, by virtue of the authority vested in me by the Universita Committeeatum E Pluribus Unum, I hereby confer upon you the honorary degree of Th.D.,… er, ‘Doctor of Thinkology’.”  —The Wizard of Oz Most of our readers understand that for a Safety Instrumented Function—a SIF—to have a particular Safety Integrity Level—a SIL—its Average Probability [...]

A Process Safety Hat Trick

“I hated being pregnant, but I never minded being in labor.  I knew I would get a prize at the end.”  — Chris Schmidt, mother of four Things have been a little crazy in Saint Louis for the past week. Founded in 1967, the Blues Hockey Club has finally won a Stanley Cup. Everyone feels [...]