2013 Volume 4 Issue 3 Pages 213-220
Outline and important points on legal positioning, features and safety management of nuclear materials containing uranium or thorium are explained. It has focused on following three points; 1) use of small amount of nuclear materials and its safety management, 2) features of raw materials or consumer products containing uranium or thorium, and how to ensure its safety, and 3) countermeasures to unexpected situation to find out a nuclear material which is not under management.
Once a small trouble on nuclear materials has happened, even if the material amount is little, social impact might become very strong because of the nuance of the term "nuclear". It is important to fully recognize that the control of the incoming and outgoing of nuclear materials based on international promises is severely requested. It is also important to implement related regulations and guidelines on material management and exposure control. Furthermore, it is important to realize rational and reasonable management on nuclear materials corresponding to situations with understanding its real features and level of hazard.