Support arrangements for core modules of nuclear reactors. [PWR]
A support arrangement is provided for the core modules of a nuclear reactor which provides support access through the control drive mechanisms of the reactor. This arrangement provides axial support of individual reactor core modules from the pressure vessel head in a manner which permits attachment and detachment of the modules from the head to be accomplished through the control drive mechanisms after their leadscrews have been removed. The arrangement includes a module support nut which is suspended from the pressure vessel head and screw threaded to the shroud housing for the module. A spline lock prevents loosening of the screw connection. An installation tool assembly, including a cell lifting and preloading tool and a torquing tool, fits through the control drive mechanism and provides lifting of the shroud housing while disconnecting the spline lock, as well as application of torque to the module support nut.
- DOE Contract Number:
- AC12-76SN00052
- Assignee:
- Dept. of Energy
- Application Number:
- ON: DE84014248
- OSTI ID:
- 7030571
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS
CONTROL ROD DRIVES
PWR TYPE REACTORS
REMOTE HANDLING EQUIPMENT
FASTENERS
REACTOR INTERNALS
REACTOR MAINTENANCE
EQUIPMENT
MAINTENANCE
MATERIALS HANDLING EQUIPMENT
REACTOR COMPONENTS
REACTORS
WATER COOLED REACTORS
WATER MODERATED REACTORS
220400* - Nuclear Reactor Technology- Control Systems
210200 - Power Reactors
Nonbreeding
Light-Water Moderated
Nonboiling Water Cooled