05000259/FIN-2011002-03
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Finding | |
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Title | Inadequate TS 5.5.2 Program for Primary Coolant Leaks Outside Containment |
Description | An NRC identified non-cited violation of Technical Specifications (TS) 5.5.2, Primary Coolant Sources Outside Containment was identified for the licensees failure to establish, implement, and maintain an adequate program for minimizing primary coolant leaks from systems (i.e., Core Spray, Residual Heat Removal, High Pressure Coolant Injection, and Reactor Core Isolation Cooling) outside containment, that could contain highly radioactive fluids during a serious transient or accident, to levels as low as practicable. The licensees corrective actions included identification, evaluation, and prioritization of all known primary coolant leaks outside containment; and development of a new program in accordance with 0-TI-578, Minimizing Primary Coolant Sources Outside Containment. This finding was entered into the licensees corrective action program as problem evaluation report (PER) 317464. This finding was determined to be more than minor because if left uncorrected it could have led to a more significant safety concern. Specifically, the licensees failure to effectively minimize and monitor primary coolant leakage outside containment could have resulted in increased main control room exposure and/or offsite dose during an accident due to excessive radioactive fission product releases into secondary containment. The finding was determined to be of very low safety significance (Green) according to IMC 0609, Appendix H, Containment Integrity Significance Determination Process, Section 6.0, Type B Findings, because the primary coolant leak rate into secondary containment was a small fraction of the leakage assumed in the design basis accident (DBA) safety analyses. The cause of this finding was directly related to the cross-cutting aspect Complete and Accurate Procedures in the Resources component of the Human Performance area because the licensees existing procedures were inadequate and incomplete for addressing the program requirements of TS 5.5.2 [H.2.(c)]. |
Site: | Browns Ferry ![]() |
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Report | IR 05000259/2011002 Section 4OA2 |
Date counted | Mar 31, 2011 (2011Q1) |
Type: | NCV: Green |
cornerstone | Barrier Integrity |
Identified by: | NRC identified |
Inspection Procedure: | IP 71152 |
Inspectors (proximate) | A Nielsen C Dykes C Fletcher C Stancil E Guthrie L Pressley M Coursey P Higgins P Niebaum R Hamilton R Patterson S Walker T Ross |
CCA | H.7, Documentation |
INPO aspect | WP.3 |
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Finding - Browns Ferry - IR 05000259/2011002 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Browns Ferry) @ 2011Q1
Self-Identified List (Browns Ferry)
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