Control rod drive hydraulic system
- San Jose, CA
A hydraulic system for a control rod drive (CRD) includes a variable output-pressure CR pump operable in a charging mode for providing pressurized fluid at a charging pressure, and in a normal mode for providing the pressurized fluid at a purge pressure, less than the charging pressure. Charging and purge lines are disposed in parallel flow between the CRD pump and the CRD. A hydraulic control unit is disposed in flow communication in the charging line and includes a scram accumulator. An isolation valve is provided in the charging line between the CRD pump and the scram accumulator. A controller is operatively connected to the CRD pump and the isolation valve and is effective for opening the isolation valve and operating the CRD pump in a charging mode for charging the scram accumulator, and closing the isolation valve and operating the CRD pump in a normal mode for providing to the CRD through the purge line the pressurized fluid at a purge pressure lower than the charging pressure.
- Research Organization:
- GENERAL ELECTRIC CO
- DOE Contract Number:
- AC03-90SF18494
- Assignee:
- General Electric Company (San Jose, CA)
- Patent Number(s):
- US 5128093
- OSTI ID:
- 868378
- Country of Publication:
- United States
- Language:
- English
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