METHOD OF TIGHTNESS MONITORING AT HEAT EXCHANGE SURFACE OF STEAM GENERATOR OF REACTOR PLANT WITH HEAVY LIQUID METAL HEAT CARRIER

摘要

FIELD: heating.SUBSTANCE: method is based on gas content change registration in a first loop in case of a leak at heat exchange surface of steam generator and heat carrier bubbling with steam and water mix. In stationary operation of reactor plant, shielding gas (argon) used to compensate for heat carrier expansion is treated to remove vapours and sprays and pumped through a metering vessel, gas temperature and pressure are measured in sequence, and spectrometric measurement ofAr component activity is performed in the metering vessel,Ar activity per volume rated for standard conditions is calculated, its stationary value is determined. Further, heat exchange surface leaks in steam generator are diagnosed byAr activity overshooting its stationary value.EFFECT: enhanced sensitivity of leak detectors at heat exchange surface of steam generator of reactor plant with heavy liquid metal heat carrier.1 dwg