05000255/FIN-2008005-01
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Finding | |
|---|---|
| Title | Inadequate Testing of Control Room Chillers |
| Description | The inspectors identified a finding of very low safety significance (Green) and an associated NCV of 10 CFR 50, Appendix B, Criterion XI, Test Control, for the inadequate testing of the heat removal capacity of the Control Room Heating, Ventilation, and Air Conditioning (CR HVAC) system. Specifically, the licensee isolated refrigerant hot gas bypass flow during the test which increased the heat removal capability of the chiller. The licensee entered the issue into their corrective action program as condition report (CR) PLP-2008-3993 and re-performed portions of the engineering basis calculation to demonstrate margin to account for the hot gas bypass flow. The finding is more than minor because, in accordance with IMC 0612, Appendix E, Examples of Minor Issues, the inspectors determined that the finding was similar to Example E.3.j and resulted in a reasonable doubt as to the operability of the chiller. Based upon a review of the licensees revised calculation for the CR HVAC system acceptance criteria and the Technical Specification (TS) requirements, the finding screens as very low safety significance (Green) using the Phase 1 SDP worksheets. The inspectors determined that the finding included a cross-cutting aspect in the area of human performance, resources, and complete and accurate procedures (H.2(c)) because the surveillance procedure unacceptably preconditioned the chiller. (1R15 |
| Site: | Palisades  |
|---|---|
| Report | IR 05000255/2008005 Section 1R15 |
| Date counted | Dec 31, 2008 (2008Q4) |
| Type: | NCV: Green |
| cornerstone | Mitigating Systems |
| Identified by: | NRC identified |
| Inspection Procedure: | IP 71111.15 |
| Inspectors (proximate) | R Jickling R Winter A Dahbur J Cassidy J Ellegood J Giessner T Taylor |
| CCA | H.7, Documentation |
| INPO aspect | WP.3 |
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Finding - Palisades - IR 05000255/2008005 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Palisades) @ 2008Q4
Self-Identified List (Palisades)
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