METHOD FOR MONITORING ALPHA-RADIATING RADIONUCLIDES IN WATER COOLANT OF NUCLEAR POWER PLANT Russian patent published in 1997 - IPC

FIELD: radiochemical analysis; monitoring of content of actinides in water coolant and process water of nuclear power plants. SUBSTANCE: sample is taken and ammonia is introduced in it at 10-50 C to concentration of 5•10^-4-0,24 g/l, then sample is filtered through acetate-cellulose membrane at flowrate of 0.1-4 l/h afforded by compressor unit. Membrane is pre-impregnated in oxide-hydrated manganine. Upon filtering, membrane is dried out and its activity is measured by means of radiometric installation. Check time is 2-3 min. Detection limit is reduced 50 times as compared to known methods. EFFECT: simplified procedure, reduced time and limit of detection. 5 dwg, 5 tbl