Critical Component Strategy

DOE-STD-1052-93

7.8.2

The strategy for critical components is to identify significant failure modes by

using an FMEA. Significant failure modes are failure modes that have a high

likelihood of occurrence and that also have an adverse effect on a system or

the plant.

7.8.3

Determination of Failure Modes and Effects

This section discusses how to determine the failure modes and effects of FCE

failures. Performing the FMEA is a significant element of the system analysis.

After the FMEA is completed, the significance of each failure mode is

established to determine which modes should be evaluated for PM tasks or

design changes.

7.8.3.1

Failure modes are the types of failure or ways a component

may fail. They may be determined by reviewing the

component's operating characteristics and how it functions in

the system. Each failure mode should be recorded on a

tabulation form.

7.8.3.2

The plausible causes of each failure mode should be

determined. Plant history may provide additional information

to determine the causes. The failure causes should be recorded

on the FMEA tabulation form.

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