安全設計の基本概念

抄録

In Japan, safety measures have been taken after an accident occurred. However, based on the basic concept of safety which is stipulated by international standards such as ISO and IEC, "preventing an accident from happening" is shown important in this article as a new approach to ensure safety which replaces the said old approach. In this new approach, all the hazards are identified in a scientific and engineering manner and they are eliminated before an accident occurs, that is, safety should be considered based on risk assessment. Also, this article introduces the safety standards which are created in a structured approach as well as the fundamental concepts which become the basis of future efforts for safety.