SYSTEM OF MEASURING CONCENTRATION OF BORIC ACID IN POWER NUCLEAR REACTOR HEAT CARRIER CIRCUIT Russian patent published in 2017 - IPC G21C17/22 G01N21/27 

FIELD: measuring equipment.

SUBSTANCE: invention relates to measurement equipment, in particular to systems for continuous and real-time measuring the concentration of boric acid in the first circuit of a nuclear reactor heat carrier. System of measuring the concentration of boric acid in the power nuclear reactor heat carrier circuit includes the first and the second laser generators, the measuring and the reference cuvettes, the first and the second photodetector units electrically connected to the processing and control unit, as well as optical elements providing optical connection between the laser generators, the cuvettes and the photodetector units. Measurement is performed as per the absorption spectral method by illumination with a probing laser radiation of the measuring cuvette connected to the first circuit of heat carrier of a nuclear VVER-reactor.

EFFECT: technical result of the invention is higher accuracy of measurements, as well as the possibility of measuring low concentrations of boric acid in the heat carrier and providing real-time remote measurements.

7 cl, 9 dwg, 2 tbl