05000454/FIN-2010006-04
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Finding | |
|---|---|
| Title | Licensee-Identified Violation |
| Description | The following violation of very low safety significance (Green) was identified by the licensee and is a violation of NRC requirements which meets the criteria of the NRC Enforcement Policy for being dispositioned as an NCV. The licensee identified that the procedure for fire door surveillances, Procedure 0BMSR FP-9, Fire Door Semi-Annual Inspection, Revision 14, permitted the individual performing the inspection to close the door to assist in latching the door which did not meet the intent of the licensees code of record for fire doors, NFPA 80 - 1983, Fire Doors and Windows. Code NFPA 80 - 1983 required closing mechanisms to be adjusted to overcome the resistance of the latch mechanism so that positive latching is achieved on each door operation. In addition, it was identified that an Exelon Corporate engineering change (EC 339805, Fire Door Acceptance Criteria, Revision 0, provided non-conservative guidance with respect to inspection of fire doors. Both the Byron Station surveillance procedure and the corporate engineering change represented non-conservative changes in that fire doors with non-functioning door closing mechanisms may not be identified during surveillance inspections which could result in a significant degradation of fire zone boundaries. A significant degradation of fire area boundaries could result in a fire affecting more than one fire zone, which could adversely affect the ability to achieve and maintain safe shutdown in the event of a fire. The changes were contrary to license conditions 2.C.6 and 2.E, for Units 1 and 2, respectively, which only permitted changes to the Fire Protection Program without prior approval of the Commission only if those changes would not adversely affect the ability to achieve and maintain safe-shutdown in the event of a fire. The violation was of very low safety significance because no instances were identified where unmonitored fire doors would fail to close without assistance. The licensee entered this issue into their corrective action program as AR 01098016, FP FASA Deficiency - Revision/Clarification of Proc Needed, dated August 4, 2010, and AR 01135777, 2002 Corp EC May Not Have Met Intent of NFPA 80, dated November 4, 2010. |
| Site: | Byron  |
|---|---|
| Report | IR 05000454/2010006 Section 4OA7 |
| Date counted | Dec 31, 2010 (2010Q4) |
| Type: | NCV: Green |
| cornerstone | Mitigating Systems |
| Identified by: | Licensee-identified |
| Inspection Procedure: | |
| Inspectors (proximate) | R Daley R Langstaff R Winter A Dahbur L Kozak G Gulla N Melly |
| INPO aspect | |
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Finding - Byron - IR 05000454/2010006 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Byron) @ 2010Q4
Self-Identified List (Byron)
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