05000317/FIN-2011004-02
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Finding | |
|---|---|
| Title | Inadequate Compensatory Actions for Out of Service High Range Effluent Radiation Monitors |
| Description | The inspectors identified an NCV of 10 CFR Part 50.54, Conditions of Licenses, paragraph (q), because Constellation did not maintain the Emergency Plan to adequately meet the standards in 50.47(b). Specifically, Constellation periodically removed the high range effluent monitors from service without addressing the impact on the site\'s ability to make a timely assessment of radiological releases as discussed in the Emergency Plan. This could result in an unnecessary delay in dose projection for certain radiological events. Immediate corrective actions included entering this issue into the CAP, updating the evaluation to address any potential delays, and protecting equipment required for dose projection. The finding is more than minor because it is associated with the facilities and equipment attribute of the Emergency Preparedness (EP) cornerstone and affected the cornerstone\'s objective to ensure that the licensee is capable of implementing adequate measures to protect public health and safety in the event of a radiological emergency. Specifically, the removal of high range effluent radiation monitors from service that provide a timely assessment capability may result in not immediately recognizing the offsite radiological condition that requires offsite protective actions. The inspectors determined the finding is of very low safety significance because it did not result in a loss or degraded Risk-Significant Planning Standard (RSPS) function. In addition, the finding is similar to examples of Green findings in IMC 0609, Appendix B, Section 4.9, in that the equipment or systems necessary for dose projection are not functional for longer than 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> from time of discovery without adequate compensatory measures. This finding has a cross-cutting aspect in the area of problem identification and resolution, CAP, because Constellation did not fully evaluate problems such that the resolution address causes and extent of condition as necessary. Specifically, Constellation did not adequately evaluate the compensatory actions following the removal of the high range effluent monitors from service to ensure that a timely assessment of offsite radiological conditions could be accomplished following a steam generator tube rupture (SGTR) event (P.1.c per IMC 0310). |
| Site: | Calvert Cliffs  |
|---|---|
| Report | IR 05000317/2011004 Section 1R15 |
| Date counted | Sep 30, 2011 (2011Q3) |
| Type: | NCV: Green |
| cornerstone | Emergency Prep |
| Identified by: | NRC identified |
| Inspection Procedure: | IP 71111.15 |
| Inspectors (proximate) | G Dentel S Kennedy R Rolph J Hawkins E Torres R Montgomery K Cronk M Jennerich |
| CCA | P.2, Evaluation |
| INPO aspect | PI.2 |
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Finding - Calvert Cliffs - IR 05000317/2011004 | |||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Calvert Cliffs) @ 2011Q3
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