Removable control rod drive shaft guide
A removable control rod drive shaft guide is described for a control rod ''guide'' structure card, comprising: a. a substantially annular shaped main body portion having a central axial bore for receiving a control rod drive shaft and an upper exterior groove for receiving removal tooling; b. the main body portion having a reduced outer diameter at its lower section; c. a shoulder portion integral with the main body portion for supporting the main body portion on the guide structure card; d. the shoulder portion having a substantially radial bore and the reduced outer diameter lower section having a slot in alignment with the radial bore; e. a locking arm ''pivotaly'' mounted in the radial bore which protrudes into the slot and is movable between a first normal locking position for engaging the guide structure card and a second release position; f. a spring received within a second axial bore in the main body portion and biased against the locking arm for urging and locking arm into the first normal locking position; and g. a release tab at one end of the locking arm for moving the locking arm into the second release position.
- Assignee:
- Babcock and Wilcox Co., New Orleans, LA
- Patent Number(s):
- US 4751042
- Application Number:
- TRN: 88-037126
- OSTI ID:
- 7064856
- Resource Relation:
- Patent File Date: Filed date 18 Feb 1986
- Country of Publication:
- United States
- Language:
- English
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