Durability evaluation of low and intermediate level radwaste disposal facility on the basis of national groundwater environment

Domestic low and intermediate level radioactive waste disposal facilities will use the burying method, and after that, it would be closed. For the safety of the disposal facility, the cement concrete structure would be used. To accomplish the performance aim of the disposal facility, the structural durability is required and if the disposal facility's structural material could work positively, long-term permanent is essential. So it is necessary to have an objective technical criteria and review, but the duration of long term over hundreds of years is still unknown and out of our experience. Therefore, it is necessary to research the way of evaluating durability on the basis of our knowledge and experience. For the long term safety assessment of radioactive waste disposal facility's structural material which is a major engineering barrier, we defined the durability and duration evaluation on the basis of national underground water environment of the cement concrete structure