DEVICE FOR MEASURING THE VALUE OF THE GAS LEAKAGE OF THE GAS MEDIA OF SEALING ELEMENTS OF LOCALIZING SAFETY SYSTEMS OF NPP

摘要

1. A device for measuring the amount of leakage of a gas medium of sealing elements of localizing safety systems of nuclear power plants, including a test item, a source of compressed gas medium supplied with a shut-off valve, a compensation chamber, a device for measuring a pressure difference made in the form of a differential pressure gauge, pipelines, valves, which differ in that the device is additionally equipped with a measuring chamber and two expanders, one of which is connected to the compensation chamber and to one end of the differential pressure gauge, the other expander is connected to the measuring chamber and the other end of the differential pressure gauge, with a horizontal plate installed inside each expander. 2. The device according to claim 1, characterized in that the weight leakage of the gaseous medium of the sealing elements is determined by the formula, where G is the weight leakage of the gaseous medium of the sealing elements,; h is the readings on the differential pressure gauge during the measurement, Pa; V is the volume of the measuring chamber plus the volume of the controlled cavity, m; k - safety factor, taking into account the measurement error; t - measurement time, s.