05000397/FIN-2015007-04
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Finding | |
|---|---|
| Title | Failure to Maintain Maintenance Procedures for Temperature Control Valve Electro-Hydraulic Operators |
| Description | The team reviewed a self-revealing Green, non-cited violation of Technical Specification 5.4.1.a, Procedures, for the licensees failure to provide adequate work instructions for performing maintenance on service water temperature control valve electrohydraulic operators. Consequently, following maintenance on service water temperature control valve SW-TCV-15A, the valve operator uncoupled from the valve stem resulting in an unplanned trip of control room emergency chiller CCH-CR-1A. The licensee initiated Action Request AR 324188 to address the inadequate maintenance instructions for valve electrohydraulic operators. The licensees failure to maintain adequate work instructions for maintenance on electro hydraulic operators was a performance deficiency. The performance deficiency is more than minor, and therefore a finding, because it affects the equipment performance attribute of the Mitigating Systems cornerstone and adversely affects the cornerstone objective to ensure the availability, reliability, and capability of systems that respond to initiating events to prevent undesirable consequences. The team determined that the finding is of very low safety significance (Green) because; the finding was a deficiency affecting the design or qualification of a mitigating system that did no result in a loss of operability. The finding is of very low safety significance (Green) because the finding was not a deficiency affecting the design or qualification of a mitigating system that; the finding did not result inrepresent a loss of operability system and/or function; the finding did not represent an actual loss of function of a single train for greater than its technical specification allowed outage time; and the finding does not represent an actual loss of function of one or more non-technical specification trains of equipment designated as high safety-significant in accordance with the licensees maintenance rule program for greater than 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />. This finding did not have a cross-cutting aspect since the cause of procedural deficiency was due to an error during initial development and was therefore not reflective of current licensee performance. |
| Site: | Columbia  |
|---|---|
| Report | IR 05000397/2015007 Section 4OA2 |
| Date counted | Mar 31, 2015 (2015Q1) |
| Type: | NCV: Green |
| cornerstone | Mitigating Systems |
| Identified by: | Self-revealing |
| Inspection Procedure: | IP 71152 |
| Inspectors (proximate) | A Allen D Proulx H Freeman J Groom T Hartman |
| Violation of: | Technical Specification - Procedures Technical Specification |
| INPO aspect | |
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Finding - Columbia - IR 05000397/2015007 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Columbia) @ 2015Q1
Self-Identified List (Columbia)
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