PM Task Report 6/21/2010

Component Type: I&C - Booster

Task Name: Calibration

Criticality Critical Minor

Duty Cycle High Low High Low High Low High Low

Service Conditions Severe Mild Severe Mild

CHS CLS CHM CLM MHS MLS MHM MLM

3Y NA 5Y NA 6Y NA 10Y NA

Task ObjectiveCalibration assures that the booster is performing within specification. The intervals are fairly clearly determined by the underlying failure time data.

Task ContentCalibration should include the following:· A visual inspection should be performed to check for tightness of the connections, general cleanliness, proper mechanical alignments, free movement of the mechanical assembly, evidence of air leaks, and damaged tubing.· Verify and adjust, as needed, the device's zero span.· Verify and adjust, as needed, the device's linearity and hysteresis.· It is strongly suggested that a minimum 5 point calibration response check be performed, a 9 point check should be considered for more critical devices.

Principle Failure Location And Causes:Calibration is mainly focused on correcting drift.

Progression Of Degradation In Time:The drift is largely age or temperature related with an expected failure free period of at least 3 years.

Support For The Task Interval And Relation To Other Tasks:The 3 year interval provides effective protection from these failure modes. Note that here, and in the listing of degradation mechanisms, remaining failure free means remaining within specifications.

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