Title :
A Magneto-Sonic Type Rod Position Monitoring System for Nuclear Power Plants
Author :
Bettencourt, Donald C. ; Meijer, Christoffel H.
Author_Institution :
E&I Development Engineer Nuclear Laboratories, Nuclear Power Systems Combustion Engineering, Inc. Windsor, Connecticut
Abstract :
Current nuclear power plant rod position monitoring systems utilize transducers that operate mainly on electro-magnetic principles. This paper describes a system that utilizes a magneto-sonic transducer operating on a combination of magnetic and sonics techniques. A magnetostrictive sonic torsional delay line provides the time interval-position relationship. The system exhibits continuous resolution, high reliability, and an accuracy of better than ±1% for a rod travel of 150 inches. The transducer has been qualified for nuclear power plant Safety Class IE operation.
Keywords :
Inductors; Magnetic flux; Magnetic separation; Magnetostriction; Monitoring; Power engineering and energy; Power generation; Shafts; Switches; Transducers;
Journal_Title :
Nuclear Science, IEEE Transactions on
DOI :
10.1109/TNS.1978.4329283
