Control rod drive with upward removable drive internals
This patent describes, in a nuclear rector having a reactor vessel, a core for the containment of fissionable materials with discrete fuel bundles comprising the core, an orificed fuel support casting for supporting four of the fuel bundles and channeling coolant to the fuel assemblies for a controlled nuclear reaction and the generation of steam, a core plate for providing an aperture for the fuel support casting between a lower coolant inlet plenum on one side and the fuel bundles on the upper side, a control rod for the insertion to and from a position between the fuel bundles wherein the nuclear reaction of the fissionable materials within the fuel bundles can be controlled, a control rod guide tube for supporting the orificed fuel support casting and fuel bundles and for receiving the control rods upon withdrawal from a position between the fuel bundles, and a control rod drive housing depending downwardly below the reactor vessel for receiving a control rod drive. The improvement to the control rod drive, control rod drive housing and control rod guide tube comprises: the control rod drive dependingly attached to the bottom of the control rod guide tube and a coupling interconnecting the top of the control rod drive to the top of the control rod drive housing whereby the control rod drive is removable with and integrally dependent from the bottom of the control rod guide tube.
- Assignee:
- General Electric Co., San Jose, CA
- Patent Number(s):
- US 4904443; A
- Application Number:
- PPN: US 7-202864A; TRN: 90-019907
- OSTI ID:
- 6841417
- Resource Relation:
- Patent File Date: 2 Jun 1988
- Country of Publication:
- United States
- Language:
- English
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