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Study on Rod Position Indication System using Permanent Magnets with Shielding Plates for a Control Rod Drive Mechanism
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  • Journal title : Journal of Magnetics
  • Volume 20, Issue 4,  2015, pp.439-443
  • Publisher : The Korean Magnetics Society
  • DOI : 10.4283/JMAG.2015.20.4.439
 Title & Authors
Study on Rod Position Indication System using Permanent Magnets with Shielding Plates for a Control Rod Drive Mechanism
Lee, Jae Seon; Cho, Sang Soon; Kim, Jong Wook;
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 Abstract
A control rod drive mechanism (CRDM) is an electromechanical equipment that provides linear movement for the control rods to control the nuclear reactivity in a nuclear reactor. A rod position indication system (RPIS) detects the control rod's position. To enhance the measurement accuracy of the system, a magnetostrictive type sensor with capability of generating operation limiting signals would be adapted instead of a conventional RPIS for a CRDM. An RPIS was modelled for a numerical analysis with the permanent magnets at the stationary limit positions and magnetic shielding plates with a moving permanent magnet. The performance analysis of the RPIS were conducted, and the results were discussed here.
 Keywords
control rod drive mechanism;rod position indication system;magnetostrictive type sensor;magnetic shielding plates;
 Language
English
 Cited by
 References
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