05000285/FIN-2014004-03
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Finding | |
|---|---|
| Title | Failure to Verify the Adequacy of the Design of the FO-10 to FO-1 Fuel Oil Transfer System |
| Description | The inspectors identified a Green non-cited violation of 10 CFR Part 50, Appendix B, Criterion III, Design Control. because the licensee did not implement design-control measures commensurate with those applied to the original design when they implemented a system modification to the emergency diesel generators (EDGs) fuel oil transfer systems. Specifically, in 1991, the licensee did not implement the design change or modification process when they placed an auxiliary boiler underground fuel oil storage tank fuel oil transfer system into service to meet the support function of transferring sufficient fuel to meet the mission time of the EDGs safety function. The licensee has scheduled a design review of this modification. The performance deficiency is more than minor because it is associated with the Design Control attribute of the Mitigating Systems cornerstone and adversely affected the cornerstones objective to ensure the reliability of systems that respond to mitigating events to prevent undesirable consequences. Despite not performing a design review of this modification, no loss of the fuel oil transfer system function occurred. The inspectors performed an initial screening of the finding in accordance with NRC Manual Chapter IMC 0609, Appendix A, The Significance Determination Process (SDP) for Findings At-Power. Using IMC 0609, Appendix A, Exhibit 2, Mitigating Systems Screening Questions, dated July 1, 2012, this finding is of very low safety significance (Green) because it: (1) was not a deficiency affecting the design or qualification of a mitigating system; (2) did not represent a loss of system and/or function; (3) did not represent an actual loss of function of a single train for greater than its technical specification allowed outage time; and (4) does not represent an actual loss of function of one or more non-technical specification trains of equipment designated as high safetysignificant for greater than 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> in accordance with the licensees maintenance rule program. The finding does not have a cross-cutting aspect because the failure to implement the design change verification process is not indicative of current licensee performance. The licensees current design change procedures require design reviews of this type of in-field modification. |
| Site: | Fort Calhoun  |
|---|---|
| Report | IR 05000285/2014004 Section 1R18 |
| Date counted | Sep 30, 2014 (2014Q3) |
| Type: | NCV: Green |
| cornerstone | Mitigating Systems |
| Identified by: | NRC identified |
| Inspection Procedure: | IP 71111.18 |
| Inspectors (proximate) | M Hay N Greene N Taylor P Hernandez P Jayroe S Schneider J Kirkland J O'Donnell J Wingebach L Ricketson |
| Violation of: | Technical Specification - Procedures 10 CFR 50 Appendix B Criterion III, Design Control Technical Specification |
| INPO aspect | |
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Finding - Fort Calhoun - IR 05000285/2014004 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Fort Calhoun) @ 2014Q3
Self-Identified List (Fort Calhoun)
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