METHOD FOR HUMIDITY CONTROL OF LEAKS OF PIPELINES AND EQUIPMENT COOLING CIRCUIT OF NUCLEAR OR THERMAL POWER PLANT Russian patent published in 2017 - IPC G21C17/07 G01M3/04 

FIELD: measuring equipment.

SUBSTANCE: invention relates to leak control based on air humidity. Measured values of relative humidity and temperature are transmitted to a computing unit, where they are transformed in values of absolute humidity. Then values of absolute moisture content are corrected using the values of absolute moisture of the reference sensor by formula: ρ(t_n)=aρ(t_n-τ)+b, where p(t_n), kg/m³ – absolute humidity from the reference sensor at the moment of time, t_n; ρ(t_n-τ), kg/m³ – absolute humidity from the reference sensor at the moment of time, (t_n-τ); τ, min is the delay time; a is scaling factor, calculated using a criterion of minimum square deviations; b, kg/m³ – correcting correction, calculated using a criterion of minimum square deviations. Corrected absolute moisture content is compared with threshold value of moisture content and the presence of leaks is detected if the threshold value is exceeded.

EFFECT: invention allows to reduce the probability of false alarm on presence of leak and reduce the possibility of failure to detect the leak.

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