ENS 47442
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ENS Event | |
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00:52 Nov 16, 2011 | |
Title | High Pressure Coolant Injection Steam Supply Valve Cable Unprotected During Postulated Fire |
Event Description | On 11/15/2011 at 1952 [EST], while performing a Fire Protection Program review, it was determined that one of the 'Multiple Spurious Operation' (MSO) modifications implemented during the P3R18 refueling outage adversely impacted Peach Bottom's fire safe shutdown analysis conclusions. New cabling that was routed for the Unit 3 High Pressure Coolant Injection (HPCI) system steam supply valve lacks appropriate fire barrier protection in the event of a postulated fire-induced damage to this cable. This cable is routed through a fire area in which the only credited and protected method of reactor level control for a fire in this area is HPCI. Postulated fire-induced damage in the cable could prevent the steam supply valve from opening, thereby causing the HPCI pump to be unavailable for an Appendix R fire. An hourly fire watch has been established as a compensatory action.
The licensee has notified the NRC Resident Inspector. |
Where | |
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Peach Bottom ![]() Pennsylvania (NRC Region 1) | |
Reporting | |
10 CFR 50.72(b)(3)(ii)(B), Unanalyzed Condition | |
Time - Person (Reporting Time:+-2.55 h-0.106 days <br />-0.0152 weeks <br />-0.00349 months <br />) | |
Opened: | Gary Gaesser 22:19 Nov 15, 2011 |
NRC Officer: | Howie Crouch |
Last Updated: | Nov 15, 2011 |
47442 - NRC Website
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Unit 3 | |
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Reactor critical | Critical |
Scram | No |
Before | Power Operation (100 %) |
After | Power Operation (100 %) |
WEEKMONTHYEARENS 569572024-02-09T18:22:0009 February 2024 18:22:00
[Table view]10 CFR 50.72(b)(3)(ii)(B), Unanalyzed Condition Unanalyzed Condition - Inadequate Fuses for Fuel Pool Cooling ENS 532652018-03-15T19:24:00015 March 2018 19:24:00 10 CFR 50.72(b)(3)(ii)(B), Unanalyzed Condition Failure to Meet Appendix R Requirements ENS 524782017-01-09T20:30:0009 January 2017 20:30:00 10 CFR 50.72(b)(3)(v)(D), Loss of Safety Function - Mitigate the Consequences of an Accident, 10 CFR 50.72(b)(3)(ii)(B), Unanalyzed Condition Emergency Diesel Generators Non-Conforming with Licensing Basis for Tornado Generated Missiles ENS 501282014-05-21T15:00:00021 May 2014 15:00:00 10 CFR 50.72(b)(3)(ii)(B), Unanalyzed Condition Unanalyzed Condition Involving Fire Safe Shutdown Capability ENS 474422011-11-16T00:52:00016 November 2011 00:52:00 10 CFR 50.72(b)(3)(ii)(B), Unanalyzed Condition High Pressure Coolant Injection Steam Supply Valve Cable Unprotected During Postulated Fire 2024-02-09T18:22:00 | |
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