Electromagnetic method for positioning objects located behind a

Details Electromagnetic method for positioning objects located behind a Electromagnetic method for positioning objects located behind a

1987-05-20

1989-09-19

Hunt, Brooks H.

Induced nuclear reactions: processes, systems, and elements

Handling of fission reactor component structure within...

376366, 310 27, G21C 1900

Patent

active

048679402

ABSTRACT:
A method for repositioning garter springs around the pressure tubes of Candu-type nuclear reactors. A primary coil having a high permeability core is inserted into the pressure tube. The coil is energized by an alternating current of a frequency and amplitude sufficient to produce a primary alternating electromagnetic field that penetrates the wall and induces an eddy current in the garter spring. A secondary alternating electromagnetic field is also produced and is reactive with the primary field to produce a travelling electromagnetic field of sufficient intensity and of such direction that the resultant of the electromagnetic forces acting on the garter spring causes the spring to move along the tube.

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patent: 4613477 (1986-09-01), Dableh
"Magnetic Metal Forming by Reversed Electromagnetic Forces", 4th IEEE Int. Pulsed Power Conference, Cenanovic, 6/83.
"Electromagnetic Forming of Zirconium and other Strong Alloys", 20th Annual Conference of Metallurgists, Cenanovic, 8/81.
"Nuclear Journal of Canada", vol. 1, No. 4, pp. 355-358, 12/87.

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