05000333/FIN-2017002-01
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Finding | |
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| Title | A Control Room Ventilation Subsystems Inoperable Longer than Allowed by Technical Specifications |
| Description | Green. A self-revealing Green NCV of Technical Specification (TS) 3.7.3, Control Room Emergency Ventilation Air Supply (CREVAS) System, and TS 3.7.4, Control Room Air Conditioning (AC) System, was identified for the failure to declare one subsystem of the control room AC and CREVAS systems inoperable. Specifically, on August 16, 2016, control room operators failed to declare the A CREVAS and A control room AC subsystems inoperable due to a degraded damper actuator. As a result, the A CREVAS and A control room AC subsystems were inoperable from August 16, 2016, until a compensatory measure to assist the dam per linkage by hand as needed was implemented on September 19, 2016, which exceeded the TS allowed outage time. On October 4, 2016, FitzPatrick personnel replaced the actuator. This issue was entered into the corrective action program (CAP) as JAF-CR-2016-3593. The performance deficiency is more than minor because it is associated with the structure, system, and component (SSC) and barrier performance attribute of the Barrier Integrity cornerstone and adversely affected the cornerstone objective of providing reasonable assurance that physical design barriers protect the public from radionuclide releases caused by accidents or events. Specifically, this resulted in the A control room AC and A CREVAS subsystems being inoperable from August 16, 2016, to September 19, 2016, and the exceedance of the allowable TS out-of-service times. In accordance with IMC 0609.04, Initial Characterization of Findings, and Exhibit 3 of IMC 0609, Appendix A, The Significance Determination Process for Findings At-Power, issued June 19, 2012, the inspectors determined that this finding is of very low safety significance (Green) because the performance deficiency did not represent a degradation of the radiological barrier function provided for the control room, and the finding did not represent a degradation of the barrier function of the control room against smoke or a toxic atmosphere (i.e. the B train of both subsystems remained operable). This finding has a cross-cutting aspect in the area of Problem Identification and Resolution, Evaluation, because FitzPatrick personnel failed to thoroughly evaluate the problem such that resolution addressed the cause. Specifically, FitzPatrick failed to fully evaluate the degraded condition during troubleshooting following the failed post-maintenance test (PMT) on August 16, 2016. Thorough testing and evaluation of the degraded actuator would have led to the identification of the need for replacement to restore the damper and its actuator to fully operable status. [P.2] |
| Site: | FitzPatrick  |
|---|---|
| Report | IR 05000333/2017002 Section 4OA3 |
| Date counted | Jun 30, 2017 (2017Q2) |
| Type: | NCV: Green |
| cornerstone | Barrier Integrity |
| Identified by: | Self-revealing |
| Inspection Procedure: | IP 71153 |
| Inspectors (proximate) | K Kolaczyk B Sienel G Stock P Ott J Pfingstein R Rolph |
| Violation of: | Technical Specification |
| CCA | P.2, Evaluation |
| INPO aspect | PI.2 |
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Finding - FitzPatrick - IR 05000333/2017002 | |||||||||||||||||||||
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Finding List (FitzPatrick) @ 2017Q2
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