05000440/FIN-2009003-04
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Finding | |
|---|---|
| Title | Failure to Prevent Contact of Energized Components Renders RCIC System Inoperable |
| Description | A finding of very low safety significance (Green) and associated non-cited violation of Technical Specification (TS) 5.4.1 was self-revealed when technicians failed to implement actions to prevent shorting of energized electrical components during maintenance. Specifically, during surveillance testing activities, a lifted lead shorted to a test lug causing the reactor core isolation cooling (RCIC) Division 2 logic to trip. The technicians suspended their surveillance procedure and operators restored the RCIC system in accordance with licensee procedures. Operators also verified high pressure core spray (HPCS) was operable. The licensee visually inspected the RCIC system and found no apparent damage. The licensee conducted additional training on the use of error prevention tools and entered the issue into the corrective action program as CR 09 59356.The finding was determined to be more than minor because the finding was associated with the Mitigating Systems cornerstone attribute of equipment performance and affected the cornerstone objective to ensure the availability, reliability, and capability of systems that respond to initiating events to prevent undesirable consequences. Specifically, the short circuit resulted in the RCIC system being inoperable. The finding was determined to have very low safety significance because it did not represent a loss of system safety function, a loss of safety function of a non-TS train designated as risk-significant for greater than 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />, an actual loss of safety function of a single train for greater than its TS-allowed outage time, or screen as potentially risk-significant due to a seismic, flooding, or severe weather initiating event. This finding has a cross-cutting aspect in the area of human performance per IMC 0305 H.4(a) because the technician failed to use error prevention techniques, such as self-checking, that are commensurate with the risk of the assigned task. Specifically, he did not use \'STAR\' (Stop, Think, Act, Review) during an activity that could render the RCIC system inoperable |
| Site: | Perry  |
|---|---|
| Report | IR 05000440/2009003 Section 1R22 |
| Date counted | Jun 30, 2009 (2009Q2) |
| Type: | NCV: Green |
| cornerstone | Mitigating Systems |
| Identified by: | Self-revealing |
| Inspection Procedure: | IP 71111.22 |
| Inspectors (proximate) | M Wilk M Marshfield M Phalen D Jones M Franke J Bashore R Leidy J Cameron R Murray C Tilton J Coroju-Sandin |
| CCA | H.12, Avoid Complacency |
| INPO aspect | QA.4 |
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Finding - Perry - IR 05000440/2009003 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Perry) @ 2009Q2
Self-Identified List (Perry)
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