Finding | |
|---|---|
| Title | Failure to Implement Adequate Periodic Exercising of Turbine Trip Solenoid Operated Valves |
| Description | A self-revealing Green finding was identified for the licensees failure to establish and implement adequate preventive maintenance (PM) for exercising the turbine electro-hydraulic auto-stop trip (AST) solenoid operated valves (SOVs) in accordance with procedure AD-EG-ALL-1202, Preventive Maintenance and Surveillance Testing Administration. As a result of the failure to exercise the SOVs at the weekly vendor recommended frequency, three of the four SOVs experienced mechanical binding (sticking) which rendered the turbine emergency trip system incapable of tripping the main turbine within the time response requirements of Technical Specifications. |
| Site: | Harris  |
|---|---|
| Report | IR 05000400/2018003 Section 4OA2 |
| Date counted | Sep 30, 2018 (2018Q3) |
| Type: | Finding: Green |
| cornerstone | Mitigating Systems |
| Identified by: | Self-revealing |
| Inspection Procedure: | IP 71152 |
| Inspectors (proximate) | J Zeiler A Patz D Hardage |
| CCA | P.5, Operating Experience |
| INPO aspect | CL.1 |
| ' | |
Finding - Harris - IR 05000400/2018003 | |||||||||||||||||||||||||||||||||||||||||||||
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Finding List (Harris) @ 2018Q3
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