05000373/FIN-2014003-01
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Finding | |
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| Title | Failure to Adhere to Postings Led to Prohibited Items Being Left in ECCS Corner Rooms |
| Description | The inspectors identified a finding of very low safety significance (Green) and associated non-cited violation of 10 CFR Part 50, Appendix B, Criterion V, Instructions, Procedures, and Drawings, for the licensees failure to follow written instructions, prominently displayed on signs and placards, which prohibit the storage of items that can potentially clog the floor drains in safety-related flood control areas of the plant. Specifically, on several occasions, the inspectors identified materials that were placed either on or near the floor of emergency core cooling system (ECCS) corner rooms such that the materials would have posed a potential clogging hazard for the floor drains during a flooding event. Upon notification by the inspectors of the presence of prohibited materials, the licensee promptly removed the items from the areas. The most recent occurrence was entered into the licensees corrective action program (CAP) as Action Request (AR) 01661788, and a number of interim compensatory measures, such as shiftly walkdowns by operations and radiation protection (RP), were implemented to ensure that the areas remained clear of prohibited items until more permanent corrective actions were developed and put in place. An apparent cause evaluation (ACE) was performed to determine the underlying cause of the performance deficiency, and to develop appropriate corrective actions. The finding was determined to be more than minor because it was associated with the equipment performance attribute of the Mitigating Systems Cornerstone, and adversely affected the cornerstones objective of ensuring the availability, reliability, and capability of systems that respond to initiating events to prevent undesirable consequences. Specifically, the failure to adhere to the written instructions of the postings in the ECCS corner rooms led to the storage of prohibited items within those areas, which could have potentially challenged equipment availability during a flooding event. The finding was determined to be of very low safety significance (Green) in accordance with the Significance Determination Process (SDP) because the performance deficiency did not result in the inoperability of any structures, systems, or components (SSCs). This finding had a cross-cutting aspect in the area of Human Performance, Training, because the organization did not ensure that the appropriate knowledge was transferred to the staff (H.9). Specifically, the staff was not effectively trained on the features of the flood control areas; therefore, the importance of keeping prohibited items out of the areas for flood mitigation purposes was not sufficiently understood. |
| Site: | LaSalle  |
|---|---|
| Report | IR 05000373/2014003 Section 1R04 |
| Date counted | Jun 30, 2014 (2014Q2) |
| Type: | NCV: Green |
| cornerstone | Mitigating Systems |
| Identified by: | NRC identified |
| Inspection Procedure: | IP 71111.04 |
| Inspectors (proximate) | M Kunowski R Baker R Ruiz R Zuffa D Chyu G Roach I Hafeez J Beavers J Robbins M Holmberg |
| Violation of: | 10 CFR 50 Appendix B Criterion V |
| CCA | H.9, Training |
| INPO aspect | CL.4 |
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Finding - LaSalle - IR 05000373/2014003 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (LaSalle) @ 2014Q2
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