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Method for controlling a nuclear fuel pencil

  • US 20050105669A1
  • Filed: 02/06/2003
  • Published: 05/19/2005
  • Est. Priority Date: 02/08/2002
  • Status: Abandoned Application
First Claim
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1. Method for the inspection of a nuclear fuel rod (1) with an end plug (3) welded to a cladding (2), a coil spring (5) being compressed between the plug (3) and the fuel (4), using an electromagnetic induction detector (9) along which the rod is moved, by measuring a detector output signal, characterised in that it consists of recording a value of the signal at a base portion (S3), obtained with non-adjacent spring coils, and other values of the signal at peaks (S4 and S5) adjacent to the plateau portion, and which apply maximum magnetic coupling, calculating a ratio ( S4 - S5 ) S3 of the values of the signal and accepting or rejecting the rod depending on whether the ratio is more than or less than a threshold.

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