DESIGN AND PERFORMANCE CHARACTERISTICS OF MAGNETIC JACK-TYPE CONTROL ROD DRIVE
The magnetic jack is a hermetically sealed, step-motion linear motor which saiisfies the need for a reliable, lowcost, nuclear reactor conirol rod drive. It is especially applicable for operation under adverse conditions peculiar to pressurized water-cooled reactors. The jack consists of a pressure shell, four sets of external magnet coils, and one internal moving part ivhich imparts linear motion to rod extensions of the control rod. The desired motion is achieved by energizing and de-energizing the various coils in a given sequence. An electromagnetic position indicator registers the position of the drive rods, thereby loeating the position of the control rod in the reactor core. Two magmetic jacks were operated under simulated boiling water reactor operating conditions for 3150 hours (18,300 ft total rod travel, 2210 scrams) and 13 0 hours (7,700 ft total rod travel, 1000 scrams), respeetively. There were no mechanical malfunctions and no significant wear was observed on the components. The position of the rod was indicated to an accuracy of 0.05 in. Complementary information includes detailed formulas and work sheets for calculating magnetic circuits and component drawings for two alternate magnetic jack designs. (auth)
- Research Organization:
- Argonne National Lab., Lemont, Ill.
- DOE Contract Number:
- W-31-109-ENG-38
- NSA Number:
- NSA-12-003867
- OSTI ID:
- 4345013
- Report Number(s):
- ANL-5768
- Resource Relation:
- Other Information: Orig. Receipt Date: 31-DEC-58
- Country of Publication:
- United States
- Language:
- English
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