Electrical Interference Measurement on Neutron Control Equipment for Nuclear Power Generating Station.

摘要

An electro-magnetic perturbation gives a current flowing on the screens of an equipment. The perturbations is simulated by a sinuoisal current 'I' flowing on the screens; a signal is observed at the input of the control channel amplifier. The ratio between the signal and the flowing current is measured. In that purpose two methods are used: a) synchronous sampling and successive summations. The e/I ratio is measured ('e' is the voltage at the input of the amplifier). b) Spectral analysis of the signal with a very narrow-band filter. Thus the quantity A=20 log I/i is obtained directly ('i' is the current at the input of the amplifier) A is the attenuation factor of the equipment for the perturbating current. This factor is interesting because it includes also the characteristic impedance of the equipment. (Atomindex citation 10:466637)