05000219/FIN-2008005-02
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Finding | |
|---|---|
| Title | Core Alterations Performed Without the Required Configuration of Source Range Nuclear Monitors |
| Description | The inspectors identified an NCV of Technical Specification 3.9.D Refueling, when Exelon performed core alterations without the required configuration of operable source range monitors (SRM). Specifically, Exelon installed two fuel assemblies in a reactor quadrant when the required configuration of SRMs was not operable. In response, Exelon entered this issue into the corrective action program and implemented actions to revise the reactor refueling procedure. The finding is more than minor because it is associated with the configuration control attribute of the barrier integrity cornerstone and affected the cornerstone objective of providing reasonable assurance that physical design barriers protect the public from radionuclide releases caused by accidents or events. Specifically, during a time of decreased availability of physical barriers (refueling outage), Exelon performed core alterations without the required configuration of operable SRMs. Using Appendix G, Shutdown Operations Significance Determination Process, of Manual Chapter 0609, Significance Determination Process, the finding was determined to have very low safety significance (Green) because it did not increase the likelihood of a loss of reactor coolant system (RCS) inventory, did not affect the licensees ability to terminate a leak path or add inventory to the RCS, or degrade the licensees ability to recover decay heat removal in the event it was lost. The performance deficiency had a cross-cutting aspect in the area of human performance, because Exelon did not ensure that the reactor refueling procedures accurately implemented the neutron monitoring requirements contained in the Technical Specifications H.2(c). (Section 1R20 |
| Site: | Oyster Creek |
|---|---|
| Report | IR 05000219/2008005 Section 1R20 |
| Date counted | Dec 31, 2008 (2008Q4) |
| Type: | NCV: Green |
| cornerstone | Barrier Integrity |
| Identified by: | NRC identified |
| Inspection Procedure: | IP 71111.2 |
| Inspectors (proximate) | P Kaufman S Pindale J Kulp M Ferdas T Setzer R Nimitz N Perry R Bellamy C Crisden |
| CCA | H.7, Documentation |
| INPO aspect | WP.3 |
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Finding - Oyster Creek - IR 05000219/2008005 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Oyster Creek) @ 2008Q4
Self-Identified List (Oyster Creek)
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