ASSESSMNET OF INTEGRITY OF PROTECTIVE BARRIERS OF LONG-TERM STORAGE FACILITY OF BN -350 REACTOR FACILITY

Abstract

One of the ways of long-term handling spent nuclear fuel is storage of spent nuclear fuel in containers. For the purpose of complex radiological assessment and to make long-term prediction estimates of radiological situation possible at the territory of spent nuclear fuel storage facility the control over emanation of radioactive gases into atmosphere should be provided. Gaseous wastes are one a kind of radioactive wastes resulting from operation of nuclear energy and industry facilities. And increase in their concentration in the air indicate radioactive wastes from nuclear power plants or medical institutions, nuclear accidents and explosions and also of radiation accidents, that can include seal failure of spent nuclear fuel storage containers. Gaseous radioactive wastes include gases, containing ⁴¹Ar, ¹³⁵Xe, ⁸⁵Kr, ¹³¹I, ³Н, ¹⁴С and other radionuclides, that can often be formed and enter air environment in amounts, exceeding the levels determined by the norms of radiation safety. This paper provides results of researches of volumetric activity of gases in the air at the territory of spent nuclear fuel long-term storage facility of BN-350 reactor facility.