Search - Number 10 - AEROSOL SITUATION MONITORING IN SOME UNDER-REACTOR PREMISES AT OBJECT “UKRYTTYA”

AEROSOL SITUATION MONITORING IN SOME UNDER-REACTOR PREMISES AT OBJECT “UKRYTTYA”
Cover not present AEROSOL SITUATION MONITORING IN SOME UNDER-REACTOR PREMISES AT OBJECT “UKRYTTYA”
Category: Number 10
Publication: 10
Summary

During 2006 - 2008 years was made monitoring of radioactive aerosol (r/a) in under-reactor premises (p) No 207/4, 318/2 of object "Ukryttya" (OS). Researches were provided on distribution among three groups of sizes (aerodynamical diameter (AD) ? 2,0 ?m, AD ? 0,6 ?m bat ? 2,0 ?m, and AD ? 0,6 ?m) and total volumetric concentrations (VC) of r/a which contained long-living (LL) alpha-, beta-emitters, separately 137Cs and 212Pb. Average value of ratio for VS of r/a which contain 137Cs to concentration of r/a with all LL beta emitters is 0,57 and ratio VS r/a with all LL beta-emitters to r/a which contained alpha-emitters is 380. Tendency to increase of VS alpha-emitters fine r/a component is discovered. Increase speed is about 103 fuel particles in volume 10-3 ?m3 per month from 1 m3 of analyzed air.