Quick release latch for reactor scram
A simple, reliable, and fast-acting means for releasing a control element and allowing it to be inserted rapidly into the core region of a nuclear reactor for scram purposes is described. A latch mechanism grips a coupling head on a nuclear control element to connect the control element to the control drive assembly. The latch mechanism is closed by tensioning a cable or rod with an actuator. The control element is released by de-energizing the actuator, providing fail-safe, rapid release of the control element to effect reactor shutdown. A sensing rod provides indication that the control element is properly positioned in the latch. Two embodiments are illustrated, one involving a collet- type latch mechanism, the other a pliers-type latch mechanism with the actuator located inside the reactor vessel. (auth)
- Research Organization:
- Originating Research Org. not identified
- NSA Number:
- NSA-33-011389
- Assignee:
- to U.S. Energy Research and Development Administration
- Patent Number(s):
- PAT-APPL-476,184.; US 3905634
- OSTI ID:
- 4135048
- Resource Relation:
- Patent File Date: 1974 Jun 01; Other Information: G21C7/08. Orig. Receipt Date: 30-JUN-76
- Country of Publication:
- United States
- Language:
- English
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Quick release latch for reactor scram
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