Transportation and disposal of radioactive waste, 1

The safety standard for the transportation of radioactive substances in Japan is explained. This explanation is divided into four sections. The introduction deals with the transportation and disposal problems called the downstream of nuclear fuel cycle. The second section deals with the regulation on the transport of radioactive substances, including the transportation regulation of IAEA and the report of the special committee for the safe transportation of radioactive substances in 1974 in Japan. The third section deals with the criteria for the safe transportation of radioactive substances, including the definition of the terms such as nuclear fission product and transportation index. A list of exception for the transportation of nuclear fission products is given. A list of container design conditions classified into A type, multilateral type (B(M)), and unilateral type (B(U)) is given. The conditions for transportation container test including the test in normal state and the test at the time of accidents are given. The test in normal state includes water blasting test, free falling test, compression and penetration tests. The emergency test includes strength test, fire resistance test and immersion test. The fourth section deals with the general conditions for transportation, for example radiation dose rate per one lot of products. (Iwakiri, K.)