05000445/FIN-2010002-03
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Finding | |
|---|---|
| Title | Failure to Test a Check Valve by Positive Means |
| Description | The inspectors identified a noncited violation of 10 CFR 50.55a(f)(4)(ii) for the failure to test a safety-related check valve in accordance with the requirements of the American Society of Mechanical Engineers (ASME) Code. Specifically, the licensee tested the closure of an auxiliary feedwater pump suction check valve by injecting water into the system through a test assembly and measured the pressure increase at the test assembly. The test assembly pressure did not represent system pressure due to the test assembly setup and as a result, the test did not provide the required positive indication of check valve closure. The licensee entered the finding into the corrective action program as condition report CR-2010-000897. The finding was more than minor because it was associated with the human performance attribute of the mitigating systems cornerstone and adversely affected the cornerstone objective, in that, the testing program did not ensure the availability, reliability, and capability of the auxiliary feedwater pump suction check valve. Using NRC Manual Chapter 0609, Attachment 4, Phase 1 - Initial Screening and Characterization of Findings, the finding was determined to be of very low safety significance because the finding did not result in an actual loss of safety function. This finding has a human performance crosscutting aspect associated with resources because the licensee failed to provide adequate and available equipment to personnel H.2d] |
| Site: | Comanche Peak  |
|---|---|
| Report | IR 05000445/2010002 Section 1R22 |
| Date counted | Mar 31, 2010 (2010Q1) |
| Type: | NCV: Green |
| cornerstone | Mitigating Systems |
| Identified by: | NRC identified |
| Inspection Procedure: | IP 71111.22 |
| Inspectors (proximate) | G Guerra W Walker B Tindell B Larson J Kramer |
| CCA | H.1, Resources |
| INPO aspect | LA.1 |
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Finding - Comanche Peak - IR 05000445/2010002 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Comanche Peak) @ 2010Q1
Self-Identified List (Comanche Peak)
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