05000361/FIN-2010006-04
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Finding | |
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Title | Failure to Report Conditions That Could of Prevented Fulfillment of Safety Function |
Description | The inspectors identified a Severity Level IV noncited violation of 10 CFR 50.73, \"Licensee Event Report System,\" in which the licensee failed to submit a licensee event report within 60 days following discovery of an event meeting the reportability criteria. On January 26, 2010, the valve which isolates nonseismic piping from condensate storage tank T-120 failed its in-service test when the hand wheel stem snapped after a leveraging device was used in an attempt to close the valve. This isolation valve, 2HV5715, must be closed within 90 minutes of an operating basis earthquake in order to prevent the loss of condensate storage tank T-120 water inventory from a line break in the nonseismic portion of the condensate system. The failure of this valve resulted in a condition prohibited by Technical Specification 3.7.6 and therefore was reportable. This finding was entered into the licensee\'s corrective action program as Nuclear Notification 200888616, and the licensee was taking actions to send a licensee event report to the NRC for this event. The inspectors determined that traditional enforcement was applicable to this issue because the NRC\'s regulatory ability was affected. Specifically, the NRC relies on the licensee to identify and report conditions or events meeting the criteria specified in regulations in order to perform its regulatory function. The inspectors determined that this finding was not suitable for evaluation using the significance determination process, and as such, was evaluated in accordance with the NRC Enforcement Policy. The finding was reviewed by NRC management, and because the violation was determined to be of very low safety significance, was not repetitive or willful, and was entered into the corrective action program, this violation is being treated as a Severity Level IV noncited violation consistent with the NRC Enforcement Policy. This finding was determined to have a crosscutting aspect in the area of problem identification and resolution associated with the corrective action program in that the licensee failed to appropriately evaluate corrective maintenance as a basis for past operability. |
Site: | San Onofre |
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Report | IR 05000361/2010006 Section 4OA2 |
Date counted | Jun 30, 2010 (2010Q2) |
Type: | TEV: Severity level IV |
cornerstone | Miscellaneous |
Identified by: | NRC identified |
Inspection Procedure: | IP 71152 |
Inspectors (proximate) | C Long E Ruesch G Tutak G Wilson M Hay R Smith S Marquez S Matharu S Walker |
CCA | P.2, Evaluation |
INPO aspect | PI.2 |
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Finding - San Onofre - IR 05000361/2010006 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (San Onofre) @ 2010Q2
Self-Identified List (San Onofre)
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