Abstract
Emergency operating procedures (EOPs) are used to instruct the operators to manage accidents in a nuclear power plant. Many plants are presently in the process of improving their EOP. It is important to recognize that the operators will have to deal with very unusual situations, use systems they are less familiar with, and possibly face unexpected plant behavior they have not experienced. In these situations the operators need reliable operating procedures to adequately respond to the complex and stressful situations and identify and take the appropriate actions. While typical operating procedures for many nuclear power plants are based on the deterministic analysis and the system design where important human actions and weakness are not being sufficiently identified. This report specifies the process by which plant operating procedures are developed and maintained using risk-informed technology so as to ensure that the operating procedures developed are technically accurate, comprehensive, explicit and user-friendly. Moreover, methods and benefits of risk-informed technology for developing procedures and verifying that the important human actions are addressed. Necessary enhancements and applications stressing the important human actions and weakness in developing operating procedures are also proposed which are of great significance in improving the safety operation of the plant.
