Induced nuclear reactions: processes – systems – and elements – Handling of fission reactor component structure within...
Patent
1983-03-29
1986-04-22
Kyle, Deborah L.
Induced nuclear reactions: processes, systems, and elements
Handling of fission reactor component structure within...
254387, 212228, G21C 1920
Patent
active
045841667
ABSTRACT:
A manually controlled tooling system for the remote placement and removal of a load, such as a plug, (12) at a location (6) inaccessible to maintenance personnel. The tooling provides for both horizontal and vertical movement of the load, and, in the preferred embodiment, rotational restraint. The load is supported vertically by at least one line (21) wrapped on a small diameter drum (19) which is supported from a travelling trolley (11) fitted to a sloping track (10). On the same shaft as the load drum, a large diameter centrally located sheave or control drum (20) accepts a single control line (13) counterwrapped in direction with respect to the load support line and terminating at its other end on a hand operated winch mechanism (14). The tooling acts to first allow the trolley to descend the track without relative motion between trolley and load. Then, with the trolley bottomed against a mechanical stop (26), the load is allowed to descend vertically to its desired position. Retrieval of the load is accomplished by reversal of the above steps resulting when the hand winch is reversed. Thus, two load motions in each direction are controlled by a single line without the need for separate, independent motion inputs.
There is further disclosed a collapsable track and trolley system, as well as a method of assembly and operation, that is capable of passage through a narrow manway (7) for deployment in an elongated passageway or conduit (1).
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Combustion Engineering Inc.
Kyle Deborah L.
Ristas L. James
Wasil Dan
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