ENS 44545
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ENS Event | |
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02:24 Oct 7, 2008 | |
Title | Unexpected Reactor Core Isolation Cooling Isolation During Test |
Event Description | During performance of PNPS Procedure 8.M.2-2.6.3 Attachment 1 step (65) the RCIC System isolated on a Group 5 signal when relay contact blocking devices (boots) were removed. All isolations went to completion. This isolation was not part of the planned evolution.
The Group 5 isolation was reset and RCIC was placed in stand by line-up at 2327 on 10/6/2008. Investigation is continuing. The licensee notified the NRC Resident Inspector. |
Where | |
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Pilgrim Massachusetts (NRC Region 1) | |
Reporting | |
10 CFR 50.72(b)(3)(v)(D), Loss of Safety Function - Mitigate the Consequences of an Accident | |
Time - Person (Reporting Time:+0.62 h0.0258 days <br />0.00369 weeks <br />8.49276e-4 months <br />) | |
Opened: | John Ohrenberger 03:01 Oct 7, 2008 |
NRC Officer: | Pete Snyder |
Last Updated: | Oct 7, 2008 |
44545 - NRC Website
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Unit 1 | |
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Reactor critical | Critical |
Scram | No |
Before | Power Operation (100 %) |
After | Power Operation (100 %) |
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