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Judgment & ambiguity · When to escalate

An ultrasonic inspection finds wall thinning on a piping circuit that's borderline against the minimum required thickness — within measurement uncertainty of either passing or needing repair — and the next planned turnaround is four months out. When does this become a call above the reliability engineer, and what would you escalate?

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Borderline against minimum thickness on live piping is not something I sit on until turnaround, because the number I have is within measurement error of failing, and the failure mode is loss of containment.

The full answer: structure, worked example, likely follow-up.

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