05000317/FIN-2010005-02
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Finding | |
|---|---|
| Title | Failure to Follow Written Procedures During Calibration of the 1A DG SR Ventilation Temperature Controller |
| Description | A self-revealing non-cited violation (NCV) of Technical Specification (TS) 5.4.1.a, Procedures, was identified because Constellation did not follow written procedures during the calibration of 1TIC10541 temperature controller. As a result, portions of the 1A diesel generator (DG) safety related (SR) ventilation failed to respond as designed, resulting in a low flow condition that challenged the safety function of the 1A DG. Specifically, the incorrect calibration of 1TlC10541 prevented the 1A DG SR ventilation system from fulfilling its design function and caused reasonable doubt whether the 1A DG could fulfill its safety function. Immediate corrective action included declaring the 1A DG inoperable until 1TIC10541 was correctly calibrated and tested and conducting a prompt investigation into the incorrect calibration of 1TIC1041. This finding is more than minor because it was associated with the Mitigating Systems cornerstone attribute of human performance and affected the associated cornerstone objective to ensure the availability, reliability, and capability of systems that respond to initiating events to prevent undesirable consequences. Specifically, the improper calibration of 1T |
| Site: | Calvert Cliffs  |
|---|---|
| Report | IR 05000317/2010005 Section 1R12 |
| Date counted | Sep 30, 2010 (2010Q3) |
| Type: | NCV: Green |
| cornerstone | Mitigating Systems |
| Identified by: | Self-revealing |
| Inspection Procedure: | IP 71111.12 |
| Inspectors (proximate) | G Hunegs S Kennedy R Rolph C Crisden J Hawkins S Ibarrola D Lawver M Osborn S Hammann |
| CCA | H.12, Avoid Complacency |
| INPO aspect | QA.4 |
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Finding - Calvert Cliffs - IR 05000317/2010005 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Calvert Cliffs) @ 2010Q3
Self-Identified List (Calvert Cliffs)
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