Data Review, Trending, and Analysis

DOE-STD-1052-93

3) Flow measurements monitor heat exchanger and pump

performance.

4) Unit heat rate is used to measure plant steam cycle efficiency.

Appendices E, F, and G provide examples of three procedures that

implement techniques proven to be successful in selected applications:

vibration monitoring, lubricating oil analysis, and infrared monitoring

(thermography).

Appendix H provides examples of the predictive maintenance techniques

applicable to various plant components.

3.4.4.5

Data Review, Trending, and Analysis

a) The predictive maintenance coordinator should compare recently

acquired data with previous history data to detect any indicated change

in equipment condition trends. If degradation indicates integrity of

operating equipment may be endangered, or if action criteria is being

approached, the predictive maintenance coordinator should initiate one

or more of the following actions:

1) Coordinate with the data originator to determine whether corrective

action has been initiated.

2) Validate the trend analysis/conclusion.

3) Request additional testing or monitoring be performed to confirm

the suspected deficient condition. Any of the various predictive

maintenance techniques available may be used to obtain additional

confirmatory information, if appropriate.

4) Initiate action (via a maintenance job request) to have the defective

equipment scheduled for repair.

5) Recommend revisions to preventive maintenance procedures and/or

schedules, if appropriate.

6) Acquire new equipment baseline data to verify correction of

problems and to establish new reference points.