05000327/FIN-2016001-02
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Finding | |
|---|---|
| Title | Inadvertent Safety Injection Due to Inadequate Main Steam Procedure |
| Description | A self-revealing NCV of Units 1 & 2 Technical Specification, 5.4.1 was documented for the licensees failure to implement an adequate procedure associate with the startup of the main steam system. Specifically, the licensee caused an inadvertent safety injection which unnecessarily challenged the operators due to an inadequate draining of the main steam header during system start up. The licensee placed the issue into the CAP. The failure of the licensee to adequately drain condensate from the main steam header resulted in an inadvertent safety injection (SI) and was a performance eficiency. The finding was determined to be greater than minor because it adversely effected the Procedure Quality attribute of the Initiating Events Cornerstone to limit the likelihood of events that upset plant stability and challenge critical safety functions during shutdown as well as power operations. The significance of this finding was evaluated in accordance with the Manual Chapter 0609 Appendix A, The Significance Determination Process for Findings At-Power. Although the unit was in Mode 3 at the time, this appendix was chosen because the plant did not meet the entry conditions for residual heat removal system operation. The inspectors concluded that the finding was of very low safety significance (Green) because no significant initiating event prompted this transient. The finding was determined to have a cross-cutting aspect in the operating experience component of the problem identification and resolution area, because the licensee failed to evaluate and implement relevant internal and external operating experience. |
| Site: | Sequoyah  |
|---|---|
| Report | IR 05000327/2016001 Section 4OA3 |
| Date counted | Mar 31, 2016 (2016Q1) |
| Type: | NCV: Green |
| cornerstone | Initiating Events |
| Identified by: | Self-revealing |
| Inspection Procedure: | IP 71153 |
| Inspectors (proximate) | A Blamey C Kontz G Smith M Roberts W Deschaine |
| Violation of: | 10 CFR 50 Appendix A Technical Specification - Procedures Technical Specification |
| CCA | P.5, Operating Experience |
| INPO aspect | CL.1 |
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Finding - Sequoyah - IR 05000327/2016001 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Sequoyah) @ 2016Q1
Self-Identified List (Sequoyah)
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