05000259/FIN-2009005-03
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Finding | |
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Title | |
Description | A Green self-revealing noncited violation of Technical Specifications 5.4.1.a was identified for failure to adequately maintain the accuracy of critical operating procedures for Power Maneuvering, and Reactor Feedwater (RFW) and Condensate System operation, which subsequently resulted in a partial loss of RFW and a Unit 2 manual reactor scram. These procedures were subsequently revised to more accurately reflect integrated plant response and establish appropriate operating limitations for the RFW and Condensate systems. This event was entered into the licensees corrective action program as PER 203538. This finding was determined to be of greater than minor significance because it was associated with the Initiating Events cornerstone attribute of Procedure Quality, and adversely affected the cornerstone objective to limit the likelihood of those events that upset plant stability and challenge critical safety functions during at-power operations. Specifically, the licensees inappropriate revision of critical operating procedures directly contributed to an unintended partial loss of RFW flow resulting in a manual reactor scram. RFW was available throughout the event. The finding was evaluated using Phase 1 of the At-Power Significance Determination Process, and was determined to be of very low safety significance (Green) because it did not contribute to both the likelihood of a reactor trip and the likelihood that mitigating equipment or functions were not available. The cause of this finding was directly related to the cross-cutting aspect of complete, accurate and up-to-date procedures in the area of Human Performance because the licensee improperly revised several critical operating procedures H.2(c). |
Site: | Browns Ferry ![]() |
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Report | IR 05000259/2009005 Section 4OA3 |
Date counted | Dec 31, 2009 (2009Q4) |
Type: | NCV: Green |
cornerstone | Initiating Events |
Identified by: | Self-revealing |
Inspection Procedure: | IP 71153 |
Inspectors (proximate) | C Stancil T Ross H Gepford E Guthrie L Miller K Korth |
CCA | H.7, Documentation |
INPO aspect | WP.3 |
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Finding - Browns Ferry - IR 05000259/2009005 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Browns Ferry) @ 2009Q4
Self-Identified List (Browns Ferry)
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