VALVE OPERATING SYSTEM DRIFT TEST. Test Evaluation DL-S-200 (T-641109). Period II
Technical Report
·
OSTI ID:4247624
A test was conducted to determine the cause of instances in which the positions of one or more reactor coolant loop main hydraulic valves was disturbed during the operation of other hydraulic valves and to develop corrective action. It was found that excessive leakage through the three-way selector valves can cause failas-is- hydraulic valves, resulting in drift from their positions. Leakage causes were found and a correction progam initiated. In additions causes of drift in the FEDAL system hydraulic valve and the pressurizer spray line hydraulic valves were determined. Remedial action for use in the PWR is outlined, and design changes for future valves of the same type are recommended. (J.R.D.)
- Research Organization:
- Westinghouse Electric Corp. Bettis Atomic Power Div., Pittsburgh
- NSA Number:
- NSA-13-011509
- OSTI ID:
- 4247624
- Report Number(s):
- WAPD-PWR-TE-32
- Country of Publication:
- United States
- Language:
- English
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