NB/T 20177-2012 (English Version) PDF

Scope: This standard specifies the basic requirements for the design of safety-related equipment cooling water systems in pressurized water reactor nuclear power plants to ensure that the equipment cooling water systems can safely and reliably perform their intended functions. This standard applies to the design of equipment cooling water systems for active pressurized water reactor nuclear power plants. It does not include design requirements for equipment cooling water system equipment, nor does it include operation, maintenance and testing requirements for equipment cooling water systems, unless it is consis ent with the system. Design is directly related. It can also be used as a reference for passive dynamic pressure water reactor nuclear power plants.

NB/T 20177-2012 Referenced Document

GB/T 12727 Appraisal of electrical equipment important to safety in nuclear power plants*， 2023-05-23 Update
GB/T 13286 Criteria for independence of class 1E equipment and circuits in nuclear power plants*， 2021-12-31 Update
GB/T 13625 Seismic qualification of safety class electrical equipment for nuclear power plants*， 2018-05-14 Update
GB/T 17569 Classification for the items of pressurized water reactor nuclear power plants*， 2021-10-11 Update
GB/T 4083 General safety principles of nuclear reactor protection system
NB/T 20035 Categorization of conditions of PWR nuclear power plants

2012 NB/T 20177-2012 Design criteria for component cooling water system of pressurized water reactor nuclear power plants