PFDAVG – Bluefield Process Safety

Unavailability During Proof Tests: What Do You Do?

Process Safety, Process Safety Management

Unavailability During Proof Tests: What Do You Do?

“…there’s a cat in a box somewhere who’s alive and dead at the same time (although if they don’t ever open the box to feed it, it’ll eventually just be two different kinds of dead)…” — Neil Gaiman, in American Gods Erwin Schrödinger never intended his thought experiment about a cat in box to launch [...]

By Mike Schmidt|2022-06-30T15:48:00-05:00June 30th, 2022|Process Safety, Process Safety Management|Comments Off

Yes, But…Hardware Fault Tolerance

Procedures, Process Safety, Process Safety Management

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 [...]

By Mike Schmidt|2019-07-11T15:29:13-05:00July 11th, 2019|Procedures, Process Safety, Process Safety Management|Comments Off