`French electrical generator rotor forging failure`

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WM_S2014_19 · Welding Metallurgy, Spring 2014 · §1.p9

Cited as supporting precedent for the molybdate water-treatment failure mode. Same type of high-strength steel, same type of cooling water treatment, same stress corrosion cracking initiated from pitting — a documented French utility failure that should have been in the inspection company's literature review.

Yeah. They started checking their water treatment. The company that did the water treatment so it wouldn't corrode, they were sort of on the hook too. They were not supposed to put things in there. They put molybdates [?] in the water, which some French researchers had shown — for the same type of steel and a great big generator rotor forging — they had a failure in France of a great big generator rotor forging in a utility, an electrical generating plant. It had stress corrosion cracking in the same type of steel with the same type of water treatment, because of pitting. So if you started looking back in the literature of the previous five or ten years, yeah, the water treatment they were using was sort of out of date. And they hadn't done inspections — the inspection company was sort of on the hook too, and they were worth about a million dollars. Hey, just throw your money in. They didn't have enough money to be held responsible.