METHOD FOR DETECTING DEPRESSURIZATION OF PROCESS EQUIPMENT AT AN EARLY STAGE BY REDUCING THE VALUE OF THE MINIMUM DETECTABLE FLUID ACTIVITY OF A RADIOMETRIC UNIT (VERSIONS) Russian patent published in 2020 - IPC G01T1/167 

FIELD: measurement.

SUBSTANCE: invention relates to methods for detecting depressurization of process equipment at an early stage. Method for detecting depressurization of process equipment at an early stage by reducing the value of the minimum detectable activity of the liquid of the radiometric apparatus, wherein in the apparatus for measuring volumetric activity of radionuclides in a liquid containing at least one integral discriminator, the discrimination threshold Et1 of discriminating energy of gamma-quanta is set at a level which is selected in energy range 1.37⋅(1+1.5⋅σ))≤Et1≤2.75⋅(1-1.5⋅σ) MeV, where σ – spectrometric DB resolution, in rel. units, which significantly reduces the effect of the external background on measurements and almost completely suppresses the background caused by contamination of the inner walls of the measuring capacitance of the installation with radionuclides contained in the monitored liquid.

EFFECT: disclosed is a method for detecting depressurization of process equipment at an early stage.

4 cl, 3 dwg