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 |2022-06-30T15:48:00+00:00June 30th, 2022|Process Safety, Process Safety Management|Comments Off on Unavailability During Proof Tests: What Do You Do?

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 |2019-07-11T15:29:13+00:00July 11th, 2019|Procedures, Process Safety, Process Safety Management|Comments Off on Yes, But…Hardware Fault Tolerance
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