05000387/FIN-2008004-02
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Finding | |
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| Title | |
| Description | The inspectors identified a NCV of Susquehanna Unit 1 Technical Specifications (TS) 3.5.1 and 3.5.3 for rendering high pressure coolant injection (HPCI) and reactor core isolation cooling (RCIC) inoperable during a planned shutdown. Specifically, both the HPCI and RCIC systems were made inoperable to fulfill their TS described safety function when operators raised reactor vessel level above the HPCI and RCIC turbine trip signals in a plant mode and at a plant pressure where both of these systems were required to be fully operable. PPL Susquehanna, LLC (PPL) initiated corrective actions to revise the shutdown procedure to prevent reactor vessel water level from being raised above the trip input level until low pressure (LP) emergency core cooling system (ECCS) are capable of being used. This finding is more than minor because it is associated with the equipment performance attribute of the mitigating systems cornerstone objective to ensure the availability, reliability, and capability of systems that respond to initiating events to prevent undesirable consequences (i.e., core damage). The finding was evaluated for significance using IMC 0609, Attachment 4, Phase 1 - Initial Screening and Characterization of Findings. Since the finding did not result in a loss of safety function or the loss of a train for greater than its TS allowed outage time, and was not potentially risk significant due to external event initiators, the finding was determined to be of very low safety significance (Green). This finding is related to the cross-cutting area of Human Performance Resources because PPL did not ensure that personnel, equipment, procedures, and other resources were available and adequate to assure nuclear safety. (H.2(c)) (1R15) |
| Site: | Susquehanna  |
|---|---|
| Report | IR 05000387/2008004 Section 1R15 |
| Date counted | Sep 30, 2008 (2008Q3) |
| Type: | NCV: Green |
| cornerstone | Mitigating Systems |
| Identified by: | NRC identified |
| Inspection Procedure: | IP 71111.15 |
| Inspectors (proximate) | F Jaxheimer G Newman K Young J Furia A Rosebrook A Ziedonis |
| CCA | H.7, Documentation |
| INPO aspect | WP.3 |
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Finding - Susquehanna - IR 05000387/2008004 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Susquehanna) @ 2008Q3
Self-Identified List (Susquehanna)
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