05000324/FIN-2014004-05
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Finding | |
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| Title | Implementation of Dry Cask Annulus Cooling to Remain in an Analyzed Thermal Condition |
| Description | An NRC-identified Severity Level IV (SLIV) non-cited violation (NCV) of very low safety significance of 10 CFR 72.150, Instructions, Procedures, and Drawings, was identified for the failure of the licensee to have adequate procedures to ensure the design basis peak fuel cladding limit would not be exceeded during outer transfer cask draining operations. Specifically, on August 25, 2014, Licensee Procedure IFS-NGGC-0016, ISFS
DSC Sealing Operations, did not include a 24-hour waiting period between flushing an draining the annulus region of the cask before moving the cask to the storage facility, t ensure that the fuel cladding temperature limits are not exceeded. The inspectors determined the failure to have an adequate procedure to ensure the design basis peak fuel cladding limit would not be exceeded during draining operations was a performance deficiency. Consistent with guidance in Section 2.2 of the NRC Enforcement Policy, Independent Spent Fuel Storage Installations (ISFSIs) are not subject to the SDP and, thus, traditional enforcement will be used for these facilities. The inspectors determined the violation was more than minor because, if left uncorrected, the failure to allow a proper cooldown of the fuel after flushing, prior to draining to move the cask, coul lead to a more significant safety concern in that fuel damage could occur. Consistent with the guidance in Section 2.6.D of the NRC Enforcement Manual, if a violation does not fit an example in the Enforcement Policy Violation Examples, it should be assigned a severity level: (1) Commensurate with its safety significance; and (2) informed by similar violations addressed in the Violation Examples. The inspectors found no similar violations in the Violations Examples. Since the licensee waited 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> prior to the final drain down, the violation was determined to be of very low safety significance (Severity Level IV). Crosscutting aspects are not assigned to traditional enforcement violations. The licensee documented this issue in the Corrective Action Program (CAP) as NCR 705130. |
| Site: | Brunswick  |
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| Report | IR 05000324/2014004 Section 4OA5 |
| Date counted | Sep 30, 2014 (2014Q3) |
| Type: | TEV: Severity level IV |
| cornerstone | Mitigating Systems |
| Identified by: | NRC identified |
| Inspection Procedure: | |
| Inspectors (proximate) | A Nielsen A Vargas D Bacon G Hopper M Catts M Meeks M Schwieg |
| Violation of: | 10 CFR 72, LICENSING REQUIREMENTS FOR THE INDEPENDENT STORAGE OF SPENT NUCLEAR FUEL, HIGH-LEVEL RADIOACTIVE WASTE, AND REACTOR- RELATED GREATER THAN CLASS C WASTE |
| INPO aspect | |
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Finding - Brunswick - IR 05000324/2014004 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Brunswick) @ 2014Q3
Self-Identified List (Brunswick)
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