05000361/FIN-2011010-03
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Finding | |
|---|---|
| Title | Failure to Incorporate Design Requirements into Procedures and Instructions |
| Description | The team identified a Green non-cited violation of 10 CFR 50, Appendix B, Criterion III, Design Control, which states in part: Measures shall be established to assure that applicable regulatory requirements and the design basis are correctly translated into specifications, drawings, procedures, and instructions. Specifically, as of July 22, 2011, the licensee did not incorporate the vendor required amperage limit, identified in engineering change package ECP-040201281-2, for bus load limit requirements, into 480 Volt Switchgear Operating Instructions SO23-6-3. This finding was entered into the licensees corrective action program as Nuclear Notification NN201570846. The team determined that the failure to incorporate the vendor required amperage limit, identified in engineering change package ECP-040201281-2, for bus load limit requirements, into 480 Volt Switchgear Operating Instructions SO23-6-3 was a performance deficiency. The finding was more that minor because it was associated with the mitigating systems cornerstone attribute of design control, to ensure the availability, reliability, and capability of systems that respond to initiating events to prevent undesirable consequences (i.e., core damage). In accordance with Inspection Manual Chapter 0609, Attachment 4, \\\"Phase 1 Initial Screening and Characterization of Findings,\\\" the finding was determined to have very low safety significance (Green) because it did not represent a design issue resulting in the loss of function, did not represent an actual loss of a system safety function, did not result in exceeding a Technical Specification allowed outage time, and did not affect external event mitigation. Specifically, the licensee had never implemented 480 Volt Switchgear Operating Instructions SO23-6-3 for the purpose of cross tying busses in an emergency, where the limiting load on the bus may have been exceeded. This finding did not have a crosscutting aspect because the most significant contributor did not reflect current licensee performance |
| Site: | San Onofre  |
|---|---|
| Report | IR 05000361/2011010 Section 1R21 |
| Date counted | Sep 30, 2011 (2011Q3) |
| Type: | NCV: Green |
| cornerstone | Mitigating Systems |
| Identified by: | NRC identified |
| Inspection Procedure: | IP 71111.21 |
| Inspectors (proximate) | J Watkins R Kopriva S Pindale T Farnholtz W Sherbin S Kobylarz |
| INPO aspect | |
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Finding - San Onofre - IR 05000361/2011010 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (San Onofre) @ 2011Q3
Self-Identified List (San Onofre)
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