Calibration of rod position indicators
Patent
·
OSTI ID:5133606
This patent describes a procedure for calibration of a rod position indicator in a nuclear reactor having movable control rods without total shutdown of the reactor. It comprises: noting that the indicated position of a rod differs from a demand position of the rod by an extent exceeding a predetermined error range, determining that the rod is actually within the predetermined error range; calculating an amount of power reduction at which the rod can be properly and safely fully inserted for the purpose of calibration of the rod position indicator; reducing power by the calculated amount, and; fully inserting the rod and calibrating the rod position indicator while withdrawing the rod.
- Assignee:
- NOV; NOV-91-024037; EDB-91-159549
- Patent Number(s):
- US 5011649; A
- Application Number:
- PPN: US 7-451100
- OSTI ID:
- 5133606
- Resource Relation:
- Patent File Date: 15 Dec 1989
- Country of Publication:
- United States
- Language:
- English
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