The wiring for a level switch I’d installed in an extremely hazardous area of the plant was wrong on a one-line diagram. After an electrical storm knocked out the power and some instruments, the plant electrician couldn’t figure out the wiring — and the engineer who drew up the diagram had left the company.Usually I’d spot such an error by following my personal checklist; it calls for me to walk-down the electrical work with the contract electrician who did it. However, the work wasn’t completed until a week before Christmas and we were in a rush. So, I let it go. My only excuse is that I was swamped then.So, let’s consider a checklist for completing a…
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