Plug testing and removal tool
Patent
·
OSTI ID:6660463
This patent describes an apparatus for testing and removing a plug from an aperture in the cylindrical core barrel wall of a nuclear reactor. The plug has an enlarged head disposed along the wall in a narrow annular access space between the wall and a surrounding cylindrical thermal neutron shield. The apparatus comprises: fixed jaw means; movable jaw means pivotally connected to the fixed jaw means for movement with respect thereto between an open position accommodating reception of the plug head between the fixed and movable jaw means and a closed position for securely gripping the plug head between the fixed and movable jaw means; drive means carried by the fixed jaw means and coupled to the movable jaw means for effecting movement thereof between the open and closed positions thereof; and tensioning means carried by the jaw means for engagement with the core barrel when the jaw means are disposed in gripping engagement with the plug head for exerting on the jaw means and the gripped plug a predetermined force in a direction radially outwardly of the wall. The jaw means and the drive means and the tensioning means all have dimensions radially of the wall substantially less than the radial thickness of the access space to permit insertion into, movement within and removal from the access space.
- Assignee:
- Westinghouse Electric Corp., Pittsburgh, PA
- Patent Number(s):
- US 4652418
- OSTI ID:
- 6660463
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
22 GENERAL STUDIES OF NUCLEAR REACTORS
220200* -- Nuclear Reactor Technology-- Components & Accessories
ANNULAR SPACE
APERTURES
BARYONS
CLOSURES
CONFIGURATION
DIMENSIONS
ELEMENTARY PARTICLES
EQUIPMENT
FERMIONS
GRABS
HADRONS
MATERIALS HANDLING EQUIPMENT
NEUTRONS
NUCLEONS
OPENINGS
PERFORMANCE TESTING
REACTOR COMPONENTS
REACTOR CORES
REMOTE HANDLING
REMOVAL
SHIELDS
SPACE
STRAINS
TESTING
THERMAL NEUTRONS
THERMAL SHIELDS
THICKNESS
WALLS
220200* -- Nuclear Reactor Technology-- Components & Accessories
ANNULAR SPACE
APERTURES
BARYONS
CLOSURES
CONFIGURATION
DIMENSIONS
ELEMENTARY PARTICLES
EQUIPMENT
FERMIONS
GRABS
HADRONS
MATERIALS HANDLING EQUIPMENT
NEUTRONS
NUCLEONS
OPENINGS
PERFORMANCE TESTING
REACTOR COMPONENTS
REACTOR CORES
REMOTE HANDLING
REMOVAL
SHIELDS
SPACE
STRAINS
TESTING
THERMAL NEUTRONS
THERMAL SHIELDS
THICKNESS
WALLS