Control rod drive hydraulic system
Abstract
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.
- Inventors:
-
- San Jose, CA
- Issue Date:
- Research Org.:
- General Electric Co., Boston, MA (United States)
- OSTI Identifier:
- 868378
- Patent Number(s):
- 5128093
- Assignee:
- General Electric Company (San Jose, CA)
- Patent Classifications (CPCs):
-
G - PHYSICS G21 - NUCLEAR PHYSICS G21C - NUCLEAR REACTORS
Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02E - REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- DOE Contract Number:
- AC03-90SF18494
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- control; rod; drive; hydraulic; crd; variable; output-pressure; pump; operable; charging; mode; providing; pressurized; fluid; pressure; normal; purge; lines; disposed; parallel; flow; unit; communication; line; scram; accumulator; isolation; valve; provided; controller; operatively; connected; effective; operating; closing; parallel flow; rod drive; control rod; pressurized fluid; control unit; flow communication; operatively connected; isolation valve; charging mode; providing pressurized; hydraulic control; variable output; /376/
Citation Formats
Ose, Richard A. Control rod drive hydraulic system. United States: N. p., 1992.
Web.
Ose, Richard A. Control rod drive hydraulic system. United States.
Ose, Richard A. Wed .
"Control rod drive hydraulic system". United States. https://www.osti.gov/servlets/purl/868378.
@article{osti_868378,
title = {Control rod drive hydraulic system},
author = {Ose, Richard A},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Wed Jan 01 00:00:00 EST 1992},
month = {Wed Jan 01 00:00:00 EST 1992}
}