Confined space entry training dwells on sewer gas a lot. Sewer gas is the chemical equivalent of both barrels to the forehead, so it’s worth the attention. There is a long laundry list of things you need to be aware of, and equipment you need to have on hand to deal with potential sewer gas exposure. The first man is required to enter the confined space wearing a harness which is attached to a winch on a tripod placed over the hole. If he’s incapacitated, the second man yanks him out without doubling down on the problem by jumping in after him. This never happens. The first man goes in without any equipment, and the second man dives in after him and dies on top of him.
Here in Maine, it happened a year or two ago. OSHA prosecuted the owner of a business that lost two men in a sewer because of sewer gas. OSHA didn’t care that the company had trained the men for confined space entry. OSHA didn’t care that the company had supplied the men with all the equipment necessary to do the job safely. The workers left all the equipment in the truck and went in the hole and died, even though they must have known the risk. OSHA prosecutes the business because it’s easier than speaking ill of the dead.
I have a long experience with exactly the type of person who ends up dead in a sewer. Without knowing any particulars of the case, I can tell you that no workman will use any safety device of any kind that interferes with smoking cigarettes — and they all smoke. You can train them and yell at them and equip them to a fare-thee-well, but the moment they’re out of your sight, they’ll do exactly as they please. Texting while driving is the poindexter version of this phenomenon.
Sippican Cottage, “Interestingly, ‘Malfunction of Unknown Provenance’ Is the Name of My Men Without Hats Tribute Band. But I Digress”, Sippican Cottage, 2016-02-25.
October 13, 2017
QotD: The danger of sewer gas
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