05000263/FIN-2009005-03
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Finding | |
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| Title | |
| Description | The inspectors sampled licensee submittals for the MSPI - Cooling Water Systems PI for the period from the Third Quarter 2008 through the Second Quarter 2009. To determine the accuracy of the PI data reported during those periods, PI definitions and guidance contained in the NEI Document 99-02, Regulatory Assessment Performance Indicator Guideline, Revision 5, was used. The inspectors reviewed the licensees operator narrative logs, issue reports, MSPI derivation reports, event reports and NRC Integrated Inspection Reports were used to validate the accuracy of the submittals. The inspectors reviewed the MSPI component risk coefficient to determine if it had changed by more than 25 percent in value since the previous inspection, and if so, that the change was in accordance with applicable NEI guidance. The inspectors also reviewed the licensees issue report database to determine if any problems had been identified with the PI data collected or transmitted for this indicator and none were identified. Documents reviewed are listed in the Attachment to this report. This inspection constituted one MSPI - cooling water system sample as defined in IP 71151-05. During the conduct of this inspection, the inspectors noted that the licensees MSPI Basis Document description of the RHRSW system did not match actual plant configuration. An engineering modification installed during the spring 2009 refueling outage changed the method of how cooling water was delivered to the RHRSW motor coolers. The inspectors noted that the modification impacted RHRSW monitored components and PRA event sequences assessed in the MSPI Basis document which were used to evaluate unavailability and unreliability data. The licensee entered this issue into their corrective action process and are evaluating applicable guidance documents to determine what is required for basis document changes, specifically in regards to timeliness of basis document changes, subsequent to actual changes in the configuration of MSPI monitored components. Pending final resolution of this issue with the licensee, and subsequent review by the NRC, this issue will be treated as an Unresolved Item (URI 5000263/2009005-03) |
| Site: | Monticello  |
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| Report | IR 05000263/2009005 Section 4OA1 |
| Date counted | Dec 31, 2009 (2009Q4) |
| Type: | URI: |
| cornerstone | Mitigating Systems |
| Identified by: | NRC identified |
| Inspection Procedure: | IP 71151 |
| Inspectors (proximate) | K Riemer M Mitchell S Thomas J Bozga P Voss A Scarbearyp Smagaczj Corujo-Sandin K Riemer D Reeser M Garza S Thomas M Bielby L Haeg P Zurawski T Go J Bozga |
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Finding - Monticello - IR 05000263/2009005 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Monticello) @ 2009Q4
Self-Identified List (Monticello)
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