05000482/FIN-2010002-01
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Finding | |
|---|---|
| Title | Degraded Fire Barriers for Auxiliary Feedwater |
| Description | The inspectors identified a noncited violation of License Condition 2.C(5)(a) for degraded fire seals that separated redundant safe shutdown equipment. Specifically, silicone foam and ceramic fiber board seals separating the auxiliary feedwater trains from the turbine building and the condensate storage tank valve house were degraded so that they no longer provided a 3-hour rated fire barrier. The licensee entered the finding into the corrective action program as Condition Report 23828. The finding was more than minor because it was associated with the Mitigating Systems Cornerstone attribute of protection against external events and affected the cornerstone objective to ensure the reliability of systems that respond to initiating events to prevent undesirable consequences. Using Inspection Manual Chapter 0609, Appendix F, Attachment 2, Degradation Rating Guidance Specific to Various Fire Protection Program Elements, under Fire Barrier Degradation, Table A2.2, the finding was associated with Moderate B degradation due to the seal not being in a tested or evaluated condition. Using Inspection Manual Chapter 0609, Appendix F, Fire Protection Significance Determination Process, in supplemental screening for fire confinement findings, the finding screens as Green due to exposing Fire Area A33 featuring an automatic full area water-based suppression system. No crosscutting aspect was assigned as this condition was not reflective of current licensee performance |
| Site: | Wolf Creek  |
|---|---|
| Report | IR 05000482/2010002 Section 1R05 |
| Date counted | Mar 31, 2010 (2010Q1) |
| Type: | NCV: Green |
| cornerstone | Mitigating Systems |
| Identified by: | NRC identified |
| Inspection Procedure: | IP 71111.05 |
| Inspectors (proximate) | G Guerra D Dumbacher J Melfi G Miller C Long C Peabody J Groom |
| INPO aspect | |
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Finding - Wolf Creek - IR 05000482/2010002 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Wolf Creek) @ 2010Q1
Self-Identified List (Wolf Creek)
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