05000289/FIN-2008006-02
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Finding | |
|---|---|
| Title | Failure to Include Increased EDG Fuel Oil Consumption Into Design Basis Calculations (Section 4OA2.a.3.b |
| Description | The inspectors identified a NCV of 10 CFR Part 50, Appendix B, Criterion III, Design Control.\" Specifically, AmerGen did not ensure that fuel consumption calculations included the additional fuel needed for allowable emergency diesel generator (EDG) frequency variations of up to 61 Hertz (Hz). The increased fuel consumption was not accurately translated into the TS used to verify operability of the EDGs. This finding is considered to be more than minor because it is associated with the design control attribute of the Mitigating Systems Cornerstone and the associated cornerstone objective of ensuring the capability of systems that respond to initiating events to prevent undesirable consequences. This finding was of very low safety significance (Green) because the finding is not a design or qualification deficiency, does not represent a loss of safety function, and does not screen as potentially risk significant due to external hazards. The issue has a cross-cutting aspect related to the area of PI&R, corrective action program component, in that, AmerGen did not thoroughly evaluate the extent of condition for a previous NRC NCV (reference IR 581933) regarding inadequate design control of EDG loading calculations. Specifically, the cause of the problem, not adequately considering the effect on EDG loading due to operating at the maximum frequency allowed by station procedures, was not resolved for other EDG parameters, such as EDG fuel oil consumption. [P1.(c)] (Section 4OA2.a.3.b)) |
| Site: | Crane  |
|---|---|
| Report | IR 05000289/2008006 Section 4OA2 |
| Date counted | Jun 30, 2008 (2008Q2) |
| Type: | NCV: Green |
| cornerstone | Mitigating Systems |
| Identified by: | NRC identified |
| Inspection Procedure: | IP 71152 |
| Inspectors (proximate) | D Tifft M Gray J Brand G Newman |
| CCA | P.2, Evaluation |
| INPO aspect | PI.2 |
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Finding - Crane - IR 05000289/2008006 | ||||||||||||||||||||||||||||||||||
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Finding List (Crane) @ 2008Q2
Self-Identified List (Crane)
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