Assembly for facilitating inservice inspection of a reactor coolant pump rotor
- O'Hara Township, Allegheny County, PA
A reactor coolant pump has an outer casing with an internal cavity holding a coolant and a rotor rotatably mounted in the cavity within the coolant. An assembly for permitting inservice inspection of the pump rotor without first draining the coolant from the casing cavity is attached to an end of the pump. A cylindrical bore is defined through the casing in axial alignment with an end of pump rotor and opening into the internal cavity. An extension attached on the rotor end and rotatable therewith has a cylindrical coupler member extending into the bore. An outer end of the coupler member has an element configured to receive a tool for performance of inservice rotor inspection. A hollow cylindrical member is disposed in the bore and surrounds the coupler member. The cylindrical member is slidably movable relative to the coupler member along the bore between a retracted position wherein the cylindrical member is stored for normal pump operation and an extended position wherein the cylindrical member is extended for permitting inservice rotor inspection. A cover member is detachably and sealably attached to the casing across the bore for closing the bore and retaining the cylindrical member at its retracted position for normal pump operation. Upon detachment of the cover member, the cylindrical member can be extended to permit inservice rotor inspection.
- Research Organization:
- Westinghouse Electric Corp., Pittsburgh, PA (United States)
- DOE Contract Number:
- AC03-86SF16038
- Assignee:
- Westinghouse Electric Corp. (Pittsburgh, PA)
- Patent Number(s):
- US 4955787
- OSTI ID:
- 867519
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
facilitating
inservice
inspection
reactor
coolant
pump
rotor
outer
casing
internal
cavity
holding
rotatably
mounted
permitting
draining
attached
cylindrical
bore
defined
axial
alignment
extension
rotatable
therewith
coupler
extending
element
configured
receive
tool
performance
hollow
disposed
surrounds
slidably
movable
relative
retracted
position
stored
normal
operation
extended
cover
detachably
sealably
closing
retaining
detachment
permit
axial alignment
outer casing
hollow cylindrical
retracted position
rotatably mounted
extended position
reactor coolant
movable relative
internal cavity
coolant pump
cylindrical bore
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