Finding | |
|---|---|
| Title | Licensee-Identified Violation |
| Description | 10 CFR Part 50.65(a)(4), Requirements for Monitoring the Effectiveness of Maintenance at Nuclear Power Plants, states, in part, Before performing maintenance activities (including but not limited to surveillance, post maintenance testing, and corrective and preventive maintenance), the licensee shall assess and manage the increase in risk that may result from the proposed maintenance activities. Contrary to this, on August 21, 2008, Constellation removed the Unit 2 motor driven AFW flow path trains to the No. 21 and No. 22 SGs without conducting an adequate risk assessment. Constellation entered this issue in their CAP as CR- 2009-000979. This finding is of very low safety significance based on a SDP Phase 1 screening utilizing IMC 0609, Appendix K, Maintenance Risk Assessment and Risk Management Significance Determination Process. Specifically, the incremental core damage probability deficit was less than 1E-6 |
| Site: | Calvert Cliffs  |
|---|---|
| Report | IR 05000317/2009002 Section 4OA7 |
| Date counted | Mar 31, 2009 (2009Q1) |
| Type: | NCV: Green |
| cornerstone | Mitigating Systems |
| Identified by: | Licensee-identified |
| Inspection Procedure: | |
| Inspectors (proximate) | O Ayegbiso M Halter D Silk M Davis C Cahill M Modes B Haagensen G Dentel S Kennedy H Balian N Perry R Rolph |
| INPO aspect | |
| ' | |
Finding - Calvert Cliffs - IR 05000317/2009002 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Finding List (Calvert Cliffs) @ 2009Q1
Self-Identified List (Calvert Cliffs)
| ||||||||||||||||||||||||||||||||||||||||||||||||||||||