05000266/FIN-2008003-02
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Finding | |
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| Title | Failure to Address Sprinkler Head Obstructions in B Train EDG Rooms |
| Description | A finding of very low safety significance and associated NCV of License Condition 4.F was identified by the inspectors for the failure to address fire suppression sprinkler head obstructions in the B train emergency diesel generator (EDG) rooms. The inspectors identified that five sprinkler heads were obstructed in the B train EDG rooms. National Fire Protection Association (NFPA) 13-1991, Installation of Sprinkler Systems, was the applicable standard for sprinkler systems installed in the two rooms. The inspectors determined that failure to address sprinkler head obstructions was contrary to NFPA 13-1991 and was a performance deficiency. The finding was determined to be more than minor because the failure to address sprinkler head obstructions was associated with the Mitigating Systems Cornerstone attribute of protection against external factors (fire) and affected the cornerstone objective of ensuring the capability of systems that respond to initiating events. Specifically, the identified obstructions to sprinkler heads would affect the sprinkler spray patterns and distribution, thereby impacting the sprinkler systems capability to control a fire. In accordance with IMC 0609, Significance Determination Process, Attachment 0609.04, Phase 1 - Initial Screening and Characterization of Findings, and IMC 0609, Appendix F, Fire Protection Significance Determination Process, the inspectors considered the finding to represent a moderate degradation of the water based suppression system for both rooms. As such, the inspectors performed a Phase 2 Analysis. The inspectors concluded that potential fire scenarios associated with the finding were effectively FDS0 fire scenarios as described in Section 2.2 of IMC 609, Appendix F, and that the issue was of very low safety significance (Green). The inspectors did not identify a cross-cutting aspect associated with this finding. (Section 1R05.1 |
| Site: | Point Beach  |
|---|---|
| Report | IR 05000266/2008003 Section 1R05 |
| Date counted | Jun 30, 2008 (2008Q2) |
| Type: | NCV: Green |
| cornerstone | Mitigating Systems |
| Identified by: | NRC identified |
| Inspection Procedure: | IP 71111.05 |
| Inspectors (proximate) | M Kunowski R Krsek S Ghasemian M Jones R Langstaff R Ruiz R Winter J Jandovitz T Bilik W Slawinski C Brown |
| INPO aspect | |
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Finding - Point Beach - IR 05000266/2008003 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Point Beach) @ 2008Q2
Self-Identified List (Point Beach)
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