Selection of Analysis Technique

DOE-STD-1052-93

theory of operation and operating limitations

maintenance and surveillance requirements

internal and external commitments

Component functions, requirements, and commitments should be listed on a form

similar to Attachment B.

After the function and requirements of the component are established, its history and

all the activities routinely scheduled for the component should be reviewed. At least

two operating cycles, covering approximately three years, of corrective and PM data,

along with any surveillance data, should be evaluated. History for components

performing identical functions in similar environments for multi-unit sites should be

included. Data older than two cycles may be of limited value since it may not reveal

any new failure modes or the cause of the failure may have been subsequently

resolved. When reviewing the history of the components, the analyst should attempt

to identify the following:

failure modes

failure causes and mechanisms

failure rates as compared to the industry if easily retrievable and available

Much of the information collected may be validated and additional perspective gained

from interviews with key operating, maintenance, engineering, and vendor personnel.

Information gained by interviews should be compared with the history data to ensure

all known failures and reliability problems are identified for analysis.

6.4

Selection of Analysis Technique

There are several analytical techniques that may be used to determine the root causes

and corrective actions for component performance problems. Each technique has its

advantages and should be used when the circumstances best fit those advantages.

Existing plant programs for root cause analysis should be considered and used

appropriately in resolving component performance problems. Unacceptable levels of

corrective maintenance noted on a component may indicate a problem with

maintenance work practices, inadequate procedures, spare parts, or inappropriate

design. Corrective actions for the causes of these problems should be addressed on

a case-by-case basis rather than considering additional PM tasks.

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