05000336/FIN-2013003-02
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Finding | |
|---|---|
| Title | Failure to Establish Measures for the Identification and Control Design Interfacesand for Coordinating among Participating Design Organizations |
| Description | The inspectors noted a self-revealing Green NCV of 10 CFR 50, Criterion III, Design Control, when Dominions did not adequately implement established measures for the identification and control of design interfaces and for coordinating among participating design organizations. Specifically, Dominion failed to properly require a temporary modification for a work activity that met the design requirements of CM-AA-TCC-204, Temporary Configuration Changes, when workers installed an air line jumper that caused an AOV to open and led to an uncontrolled loss of RCS inventory. Dominion entered the issue into their CAP as CR511856. The finding is more than minor because it is associated with the design control attribute of the Initiating Events cornerstone and affected the cornerstone objective to limit the likelihood of events that upset plant stability and challenge critical safety functions during shutdown operations. Specifically, Dominion failed to properly implement a temporary modification which ultimately led to the uncontrolled loss of RCS inventory. The finding was of very low safety significance (Green) because the charging system had sufficient capacity to maintain pressurizer level, the leakage would not have caused the loss of the running residual heat removal (RHR) pump for a substantial period of time, and at least one steam generator (SG) remained available. The finding had a cross-cutting aspect in Human Performance, Work Practices, because Dominion failed to ensure supervisory and management oversight of work activities such that nuclear safety is supported. Specifically, the station did not maintain control of activities in accordance with plant procedures. |
| Site: | Millstone  |
|---|---|
| Report | IR 05000336/2013003 Section 1R20 |
| Date counted | Jun 30, 2013 (2013Q2) |
| Type: | NCV: Green |
| cornerstone | Initiating Events |
| Identified by: | NRC identified |
| Inspection Procedure: | IP 71111.2 |
| Inspectors (proximate) | J Krafty J Laughlin F Bower R Rolph J Ambrosini C Newport E Burkett E Andrews P Kaufman B Haagensen |
| Violation of: | 10 CFR 50 Appendix B Criterion III, Design Control |
| CCA | , |
| INPO aspect | LA.2, LA.2 |
| ' | |
Finding - Millstone - IR 05000336/2013003 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Millstone) @ 2013Q2
Self-Identified List (Millstone)
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