Talk:Failure mode and effects analysis/Archives/2019

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Two scales of Severity

The Severity section shows levels I to V, but the Risk level (P*S) and (D) section has Severity levels I to VI. This is not wrong, because the article says that other classifications are possible, but maybe we should be consistent within our article. --Heron (talk) 15:54, 1 February 2019 (UTC)

Looking at the latest version of the DoD standard cited in the article (MIL-STD-882E, issued 2012), there are only four severity categories (1 - Catastrophic, 2 - Critical, 3 - Marginal, 4 - Negligible), which are also inverted from the scale in that section. For easy reference, this is what the MIL-STD-882E version of the table looks like:

Probability / Severity -->	Catastrophic (1)	Critical (2)	Marginal (3)	Negligible (4)
Frequent (A)	High	High	Serious	Medium
Probable (B)	High	High	Serious	Medium
Occasional (C)	High	Serious	Medium	Low
Remote (D)	Serious	Medium	Medium	Low
Improbable (E)	Medium	Medium	Medium	Low
Eliminated (F)	Eliminated

Really, risk assessment tables like this are fairly common nowadays (and especially familiar to most users of health & safety risk assessments), so can be constructed in whatever way makes most sense to what is being explained. And to be honest, I feel like the article could do with a significant overhaul, as a lot of the material is probably more appropriate at somewhere like Wikibooks. — Sasuke Sarutobi (push to talk) 17:31, 1 February 2019 (UTC)

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