05000220/FIN-2012004-01
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Finding | |
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| Title | |
| Description | A self-revealing Green finding (FIN) was identified for NMPNS failure to adequately implement the monitoring activities specified in the operation decision making issues (ODMI) plan for the Unit 1 electronic pressure regulator (EPR) in accordance with procedure CNGOP- 1.01-1001, Operational Decision Making . As a result, when the EPR system began to degrade on June 21, 2012, this condition was not identified by station personnel and corrective action (CA) was not implemented. The EPR subsequently malfunctioned while in service, causing a July 17, 2012, reactor scram. NMPNS removed the EPR from service and entered the issue into its corrective action program as CR-2012-006792. This finding is more than minor because it adversely affected the human performance attribute of the Initiating Events Cornerstone and affected the cornerstone objective of limiting the likelihood of those events that upset plant stability and challenge critical safety functions during power operations. The inspectors evaluated the finding using Attachment 0609.04, Initial Characterization of Findings, in Inspection Manual Chapter (IMC) 0609, Significance Determination Process. The finding was determined to be of low safety significance (Green) because while it caused a reactor scram, it did not result in the loss of mitigation equipment relied upon to transition the plant from the onset of the trip to a stable shutdown condition. The finding has a cross-cutting aspect in the area of human performance, work practices, because NMPNS did not ensure proper supervisory and management oversight of the ODMI implementation plan. |
| Site: | Nine Mile Point  |
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| Report | IR 05000220/2012004 Section 1R12 |
| Date counted | Sep 30, 2012 (2012Q3) |
| Type: | Finding: Green |
| cornerstone | Initiating Events |
| Identified by: | Self-revealing |
| Inspection Procedure: | IP 71111.12 |
| Inspectors (proximate) | L Scholl D Dempsey K Kolaczyk B Haagensen G Dentel J Krafty C Crisden B Dionne E Miller |
| CCA | H.2, Field Presence |
| INPO aspect | LA.2 |
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Finding - Nine Mile Point - IR 05000220/2012004 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Nine Mile Point) @ 2012Q3
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