05000341/FIN-2010006-04
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Finding | |
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Title | Failure to include Turbine Building Heating Ventilation and Air Conditioning Fans in the Scope of the Maintenance Rule Program. |
Description | The inspectors identified a finding having very low safety significance with an associated NCV of Title 10 of the Code of Federal Regulations (CFR) 50.65(b)(2)(iii), for the licensees failure to include turbine building heating ventilation and air conditioning (TBHVAC) fans in the scope of their maintenance rule (MR) program. Specifically, the licensee failed to effectively control TBHVAC system components condition through the implementation of appropriate preventive maintenance as directed by the requirements of the MR. The TBHVAC system is used to maintain the turbine building at a negative pressure for radiological considerations and room and area temperature below design limits to prevent a Group One Isolation resulting in main steam isolation valves (MSIV) closure and a reactor trip. The licensee entered the issue into their corrective action program for further evaluation. This finding was more than minor because it was associated with the Initiating Events cornerstone attribute of equipment performance, and affected the cornerstone objective to limit the likelihood of those event that upset plant stability and challenge critical safety functions during shutdown, as well as power operations. This finding is of very low safety significance (Green), because it does not contribute to the likelihood that mitigation equipment or functions will not be available. The inspectors determined there was no cross-cutting aspect associated with this finding because the system was initially scoped out during the initial baseline evaluation for MR in June 1995 and was not reflective of current performance |
Site: | Fermi |
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Report | IR 05000341/2010006 Section 1R21 |
Date counted | Jun 30, 2010 (2010Q2) |
Type: | NCV: Green |
cornerstone | Initiating Events |
Identified by: | NRC identified |
Inspection Procedure: | IP 71111.21 |
Inspectors (proximate) | B Jose C Baron C Brown C Moore G Skinner L Kozak M Jones P Lougheed Z Falevitsb Josec Baron C Brown C Moore G Skinner L Kozak M Jones P Laugheed Z Falevits |
INPO aspect | |
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Finding - Fermi - IR 05000341/2010006 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Fermi) @ 2010Q2
Self-Identified List (Fermi)
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