05000483/FIN-2010003-01
From kanterella
Jump to navigation
Jump to search
Finding | |
|---|---|
| Title | Inadequate Surveillance Procedure to Verify and Maintain Emergency Core Cooling System Operable |
| Description | The inspectors identified a noncited violation of Technical Specification 3.5.2, Emergency Core Cooling Systems. Specifically Technical Specifications Surveillance Requirement 3.5.2.3, Verify the ECCS piping is full of water, was not being met by licensee Procedure OSP-SA-00003, Emergency Core Cooling System Flow Path Verification and Venting. On April 22, 2010, the inspectors discovered that the train B residual heat removal system discharge line EJ-024-ECB-10 did not have an accessible high point vent. The line was required by Callaway procedures to be either monitored by venting or tested using an ultrasonic method as described in the procedures acceptance criteria. Callaway had identified the need to install a vent valve in line EJ-024-ECB-10 per modification MP-08-0016 prior to Refueling Outage 17. The licensee originally scheduled the vent valve installation during Refueling Outage 17, but had inappropriately deferred the maintenance to the next outage in fall 2011. As immediate corrective action, the licensee installed the vent valves in Refueling Outage 17 and placed this issue into the corrective action program as Callaway Action Request 201004078
This finding is more than minor because it affected the Mitigating Systems Cornerstone procedure quality attribute and affected the cornerstone objective to ensure the availability, reliability, and capability of systems that respond to initiating events to prevent undesirable consequences. Using Manual Chapter 0609.04, Phase 1 Initial Screening and Characterization of Findings, the inspectors determined that this finding is of very low significance because it was only a design or qualification deficiency confirmed not to result in loss of operability. This finding has a crosscutting aspect in the area of human performance associated with the decision making component because the licensee failed to use conservative assumptions in decision making and did not adopt a requirement to demonstrate that either venting or ultrasonic testing was needed to verify line EJ-024-ECB-10 was full of water. |
| Site: | Callaway  |
|---|---|
| Report | IR 05000483/2010003 Section 1R04 |
| Date counted | Jun 30, 2010 (2010Q2) |
| Type: | NCV: Green |
| cornerstone | Mitigating Systems |
| Identified by: | NRC identified |
| Inspection Procedure: | IP 71111.04 |
| Inspectors (proximate) | D Dumbacher B Henderson C Graves J Adams G Miller A Fairbanks J Groom T Buchanan D Reinert N Hernandez J Braisted N Greene |
| CCA | H.14, Conservative Bias |
| INPO aspect | DM.2 |
| ' | |
Finding - Callaway - IR 05000483/2010003 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Finding List (Callaway) @ 2010Q2
Self-Identified List (Callaway)
| |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||