Scram release for a control rod
Patent
·
OSTI ID:7343824
A double-sided rack and pinion control element drive mechanism for a nuclear reactor is disclosed wherein scram release is accomplished by the dual action of withdrawing the pinion from its engagement with the rack while at the same time rotating the pinion in a direction consistent with the movement of the rack and the control rod in their downward travel. The pinion is withdrawn from engagement with the rack while remaining in engagement with its stationary driving means. The continuing engagement with the stationary driving means causes the pinion to rotate when the pinion is caused to move away from the rack during disengagement. 10 claims, 7 drawing figures.
- Assignee:
- Combustion Engineering, Inc.
- Patent Number(s):
- US 3965757
- OSTI ID:
- 7343824
- Country of Publication:
- United States
- Language:
- English
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