05000266/FIN-2005018-01
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Finding | |
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| Title | Updated Final Safety Analysis Report Change to Replace ASME Class Ii, Seismic Class I, Piping with a Freeze Seal |
| Description | The inspectors identified a Severity Level IV Non-Cited Violation associated with the failure to perform an adequate safety evaluation review as required by 10 CFR 50.59 for changes made to the facility as described in the UFSAR. In safety evaluation, EVAL 2004- 003, the licensee failed to provide a basis for the determination that on-line repairs to the excess letdown line with a freeze seal in place as a boundary for Reactor Coolant System (RCS) effluent from the Reactor Coolant Pumps (RCPs) was acceptable without a license amendment. Specifically, for this freeze seal evolution, the licensee would have replaced the American Society of Mechanical Engineers (ASME) Class II, Seismic Class I piping in the excess letdown line with a freeze plug while the plant was still on-line. Within the 10 CFR 50.59 evaluation, the licensee failed to provide a basis for why this freeze seal evolution did not present more than a minimal increase in the likelihood of occurrence of a malfunction of a Structure, System and Component (SSC) important to safety. As a result of this issue, the licensee performed a revision to the original safety evaluation to withdraw the facility change that allowed the freeze seal with the plant online.
Because the issue affected the NRCs ability to perform its regulatory function, this finding was evaluated using the traditional enforcement process. The finding was determined to be more than minor because the inspectors could not reasonably determine that the UFSAR change, which adversely affected equipment important to safety, would not have ultimately required NRC approval. The finding was determined to be of very low safety significance (Green), because the inspectors answered no to all three questions under the Containment Barriers Cornerstone column of the Phase 1 worksheet. Specifically, the licencee had not actually performed this evolution when the pressure boundary was required to be intact. |
| Site: | Point Beach  |
|---|---|
| Report | IR 05000266/2005018 Section 1R02 |
| Date counted | Dec 31, 2005 (2005Q4) |
| Type: | TEV: Severity level IV |
| cornerstone | Barrier Integrity |
| Identified by: | NRC identified |
| Inspection Procedure: | IP 71111.02 |
| Inspectors (proximate) | R Daley N Valos C Acosta B Jose C Moore |
| INPO aspect | |
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Finding - Point Beach - IR 05000266/2005018 | |||||||||||||||||||||||||
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Finding List (Point Beach) @ 2005Q4
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