Evaluation of Disposal Limits for Shallow Land Burial Facilities: Application to the Back End of Nuclear Fuel Cycle

摘要

The limits on disposal rates and activity concentrations m radioactive wastes have been computed using different release scenarios for about 26 radionuclides commonly encountered in a shallow land burial facility originating from the back end of nuclear fuel cycle. These limits are then segregated for major specific radionuclides/groups of radionuclides on the basis of a critical scenario/critical pathway concept indicating signatory radionuclides for monitoring purposes. Disposal rates and activity concentrations of short lived 15, β,γ radionuclides and ↑(137)Cs are limited by the external exposure route to occupational Workers. The well-water-drinking pathway limits the disposal rates and activity concentrations of ↑(3)H and long lived β, γ radionuclides having low K↓（d） owing to their rapid migrational characteristics. The dwelling-inhalation pathway restricts activity concentration limits ofαbearing wastes. # 1997 Elsevier Science Ltd. All rights reserved