05000269/FIN-2011017-05
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Finding | |
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| Title | Heat Addition to the Spent Fuel Pool from the Reactor Coolant Makeup Letdown Line |
| Description | The inspectors reviewed Calculation OSC-0619, Analysis for use of Spent Fuel Pool Inventory for SSF, and determined that justification was not available for two critical assumptions that directly impact the technical justification necessary to protect the integrity of the spent fuel in the spent fuel pool during a SSF event. Specifically, support documentation to show that excluding the mass and heat input to the spent fuel pool from the RCS SSF letdown line is the bounding scenario with respect to maintaining one foot above the spent fuel at all times during a SSF event and the analysis to support the assumption that the fuel would remain in nucleate boiling for the SSF mission time was not available. PIP O-11-8104 was initiated to document this deficiency and add supporting information to clarify the assumptions in the calculation. Pending the results of this additional inspection an Unresolved Item will be opened and designated as URI 05000269, 270, 287/2011017-05, Heat Addition to the Spent Fuel Pool from the Reactor Coolant Makeup Letdown Line |
| Site: | Oconee  |
|---|---|
| Report | IR 05000269/2011017 Section 4OA5 |
| Date counted | Sep 30, 2011 (2011Q3) |
| Type: | Other: |
| cornerstone | Mitigating Systems |
| Identified by: | NRC identified |
| Inspection Procedure: | IP 93812 |
| Inspectors (proximate) | B Parks G Hutto J Austin K Ellis M Riches S Walkerb Desaig Skinner J Hamman L Mellen M Riley M Yeminy P Higgins T Lighty |
| INPO aspect | |
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Finding - Oconee - IR 05000269/2011017 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Oconee) @ 2011Q3
Self-Identified List (Oconee)
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