Finding | |
|---|---|
| Title | Failure to Perform an Adequate Risk Assessment for Switchyard Activities |
| Description | The inspectors identified a NCV of 10CFR50.65(a)(4) for failure to perform an adequate risk assessment for Unit 1 when the performance of switchyard activities affected both units, and were categorized as risk significant for Unit 2. This finding was documented in the licensees corrective action program as Problem Investigation Process report (PIP) M-08- 6297. No immediate corrective action was taken because the work was almost completed by the time the licensee confirmed their error. Long term corrective actions include training personnel on performing shutdown risk assessments. This finding is greater than minor because the Unit 1 risk assessment failed to consider maintenance activities that were occurring in the switchyard that affected both units and would have resulted in a higher risk category if properly assessed and could increase the likelihood of initiating events such as loss of offsite power. The finding was determined to be of very low safety significance because the time to boil in the spent fuel pool was slightly over 10 hours1.157407e-4 days <br />0.00278 hours <br />1.653439e-5 weeks <br />3.805e-6 months <br />, which would have allowed sufficient time such that upon a loss of offsite power there would have been a reasonable likelihood for success of actions taken to recover off-site power. This finding has a cross-cutting aspect of decision making in the area of human performance H.1.a]. (Section 1R13 |
| Site: | McGuire  |
|---|---|
| Report | IR 05000369/2008005 Section 1R13 |
| Date counted | Dec 31, 2008 (2008Q4) |
| Type: | NCV: Green |
| cornerstone | Initiating Events |
| Identified by: | NRC identified |
| Inspection Procedure: | IP 71111.13 |
| Inspectors (proximate) | D Harmon H Gepford J Bartley J Brady J Fuller L Miller R Chou R Eul |
| CCA | H.13, Consistent Process |
| INPO aspect | DM.1 |
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