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Title: Assembly for facilitating inservice inspection of a reactor coolant pump rotor

Abstract

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 positionmore » for normal pump operation. Upon detachment of the cover member, the cylindrical member can be extended to permit inservice rotor inspection.« less

Inventors:
 [1]
  1. (O'Hara Township, Allegheny County, PA)
Issue Date:
Research Org.:
WESTINGHOUSE ELECTRIC CORP
OSTI Identifier:
867519
Patent Number(s):
4955787
Assignee:
Westinghouse Electric Corp. (Pittsburgh, PA) OSTI
DOE Contract Number:  
AC03-86SF16038
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
assembly; 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; /415/416/

Citation Formats

Veronesi, Luciano. Assembly for facilitating inservice inspection of a reactor coolant pump rotor. United States: N. p., 1990. Web.
Veronesi, Luciano. Assembly for facilitating inservice inspection of a reactor coolant pump rotor. United States.
Veronesi, Luciano. Mon . "Assembly for facilitating inservice inspection of a reactor coolant pump rotor". United States. https://www.osti.gov/servlets/purl/867519.
@article{osti_867519,
title = {Assembly for facilitating inservice inspection of a reactor coolant pump rotor},
author = {Veronesi, Luciano},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1990},
month = {1}
}

Patent:

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