05000282/FIN-2012002-10
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Finding | |
|---|---|
| Title | Inadequate Three Hour Fire Barrier Between Bus 26 And Bus 27 Rooms |
| Description | A finding of very low safety significance and an NCV of Condition 2.C.4 of the Unit 2 operating license was identified by the inspectors on November 8, 2011, due to the failure to implement and maintain in effect all provisions of the approved fire protection program. Specifically, a wall between the Bus 26 and Bus 27 rooms contained gaps such that it was not able to be credited as a 3-hour fire barrier. Corrective actions for this issue included establishing a fire watch and repairing the gaps so that the fire barrier/wall provided the required protection. The inspectors determined that this finding was more than minor because it affected the protection against external factors attribute of the Mitigating Systems Cornerstone. This finding also affected the cornerstone objective of ensuring the availability, reliability, and capability of systems that respond to initiating events to prevent undesirable consequences. The finding was determined to be of very low safety significance because no credible fire scenarios affecting the safe shutdown of Unit 2 existed, the distance between the gap and the safe shutdown equipment was large, and negligible combustible loading existed in the adjacent areas. No cross-cutting issue was identified since the cause of this finding occurred more than three years ago and was not reflective of current plant performance. |
| Site: | Prairie Island  |
|---|---|
| Report | IR 05000282/2012002 Section 4OA5 |
| Date counted | Mar 31, 2012 (2012Q1) |
| Type: | NCV: Green |
| cornerstone | Mitigating Systems |
| Identified by: | NRC identified |
| Inspection Procedure: | |
| Inspectors (proximate) | C Moore C Thomas D Passehl D Szwarc J Beavers J Jandovitz K Riemer K Stoedter M Phalen P Zurawski R Langstaff V Myers A Dunlop A Shaikh |
| INPO aspect | |
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Finding - Prairie Island - IR 05000282/2012002 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Prairie Island) @ 2012Q1
Self-Identified List (Prairie Island)
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