Environmental monitoring around radioactive waste burial site, (1). Selection method of monitoring items

A selection method of monitoring items in an environmental monitoring around a radioactive waste burial site was discussed by comparing the superiority of each monitoring item. Higher superiority was given to the monitoring item of which measurement error would lead to smaller estimation error of an internal radiation dose to man, supposing that the evaluation of the internal radiation dose to man was valid. Two practicable monitoring items (radionuclide concentrations in groundwater and those in soil) which are on the same transportation pathway of radionuclides to man, and those (radionuclide concentrations in drinking water and those in irrigation water; concentrations in drinking water and those in soil) which are on different transportation pathways, were picked up and those superiorities were evaluated supposing that ⁹⁰Sr would mainly contribute to the radiological hazards to man which would be caused by the radioactive wastes disposed in the ground. The effect of background concentration of ⁹⁰Sr on a selection of monitoring items was not discussed. (author)