Apparatus and method for removing thermocouples from nuclear rea

Details Apparatus and method for removing thermocouples from nuclear rea Apparatus and method for removing thermocouples from nuclear rea

1984-09-26

1987-10-20

Kyle, Deborah L.

Induced nuclear reactions: processes, systems, and elements

Handling of fission reactor component structure within...

G21C 1900

Patent

active

047012978

ABSTRACT:
A clamp is applied to a thermocouple of a nuclear reactor vessel at a location above the level of the vessel head, the clamp being supported on a chain or cable block which is coupled through a load cell to an overhead crane. A vibrator is mounted on the clamp. The thermocouple is withdrawn by pulling it longitudinally upwardly with a predetermined force and, if it does not move, vibrating it by applying vibratory energy at an angle of about 20.degree. of its longitudinal axis of the thermocouple. The pulling force is then periodically increased by 45-kg increments until longitudinal movement of the thermocouple begins.

REFERENCES:
patent: 3168140 (1965-02-01), Bodine
patent: 3393002 (1968-07-01), Woolley
patent: 3583752 (1971-06-01), Panissidi
patent: 3899390 (1975-08-01), Klein et al.
patent: 4313793 (1982-02-01), Klumb et al.

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