05000219/FIN-2008003-02
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Finding | |
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Title | Instrument Air Transient Due to Insufficient Preventive Maintenance on Service Air Compressors |
Description | A self revealing finding occurred when the suction air filters to the 1-1 and 1-2 service air compressors became clogged with debris which affected the availability and reliability of the compressors on April 25, 2008. In 2001, AmerGen implemented a modification which involved replacing the service air compressors. During the modification process, AmerGen removed preventive maintenance tasks for the suction air filters without adequate technical justification. AmerGens corrective actions included replacing the inlet air filters, taking action to create Preventive Maintenance (PM) to inspect/replace the air filters and reviewing the extent of condition with respect to similar plant modifications. This finding was of very low safety significance and determined not to be a violation of NRC requirements. The finding was more than minor because it was associated with the equipment 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 shutdown as well as power operations. The finding was assessed in accordance with IMC 0609.04, Phase 1 Initial Screen and Characterization of Findings. The inspectors performed a Phase 1 screening and determined that a Phase 2 evaluation was required to assess safety significance because the finding contributed to both the likelihood of a reactor trip and the likelihood that mitigation equipment would not be available. A Region 1 senior reactor analyst (SRA) determined that a Phase 2 evaluation was not suited to assess this event. A Phase 3 analysis was performed by the SRA and the finding was determined to be of very low safety significance. The inspectors did not identify a cross cutting aspect for this finding because the performance deficiency had occurred several years ago and is not indicative of current performance |
Site: | Oyster Creek |
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Report | IR 05000219/2008003 Section 1R12 |
Date counted | Jun 30, 2008 (2008Q2) |
Type: | Finding: Green |
cornerstone | Initiating Events |
Identified by: | Self-revealing |
Inspection Procedure: | IP 71111.12 |
Inspectors (proximate) | M Ferdas R Nimitz J Commiskey R Bellamy O Ayegbiso J Heinly J Kulp J Schoppy |
INPO aspect | |
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Finding - Oyster Creek - IR 05000219/2008003 | |||||||||||||||||||||||||||||||||||||
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Finding List (Oyster Creek) @ 2008Q2
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