5. The design team considers reduction in risk in ALARP region according to cost-effectiveness basis. According to circumstances, the approval team may refer the relative cost-effectiveness assessment result for review of risk control option.

6. In application to safety equivalency principle, the approval team and the design team are to consid- er the following through continuous mutual discussion.

(1) Selecting a similar design for criteria(including other industries)

(2) Type and estimation method of the compared risk

(3) Scope of the compared design and system

7. Risk acceptance criteria are to be defined separately as high level risks and low level risk and also

defined separately according to the type of risk. Therefore, risk acceptance criteria for high level and low level are defined separately and risk acceptance criteria for safety and environment are al- so defined separately. Each defined risk acceptance criteria may be different to each other or may be similar to or same as each other in some cases.