IMPROVEMENTS IN AND RELATING TO NUCLEAR REACTOR CONTROL ROD WINDING MECHANISMS
Patent
·
OSTI ID:4695199
A control rod winding mechanism is designed for gascooled graphite- moderated reactors. The mechanism comprises a winding drum journalled in a supporting structure for winding a cable on to and off a spirally grooved outer surface of the drum, means for causing the drum to move along its axis of rotation so that the cable pay-off position is kept stationary, and pulley means for guiding the cable on to and off the drum. The driving means comprises a constant-speed motor coupled to the drum through a variable ratio gear unit. The gear ratio is varied to produce a constant rate of reactivity change as the drum moves axially. (D.L.C.)
- Research Organization:
- Originating Research Org. not identified
- NSA Number:
- NSA-17-028513
- OSTI ID:
- 4695199
- Report Number(s):
- GB 929174
- Country of Publication:
- United Kingdom
- Language:
- English
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