METHOD FOR CHECKING NUCLEAR FUEL ROD

摘要

FIELD: nuclear power engineering; checking nuclear reactor fuel elements. ^ SUBSTANCE: proposed method involves following procedures. Welded joint between plug and fuel rod can incorporating spring is checked for condition by means of electromagnetic induction detector. Excess-energy formed welded joint loosens spring metal structure which can reduce electromagnetic coupling and level of detector-recorded signal. Criterion of fuel rod quality estimate is found by comparing peak values of signal and those of signal on straight-line section of curve. ^ EFFECT: enhanced quality control level of welded joint between plug and can charged with fuel pellets. ^ 1 cl, 2 dwg