T/CERS 0035-2024 Active Group standards

T/CERS 0035-2024 VVER risk-oriented safety system online maintenance technical requirements

Publish Date: 2024-09-26 Implement Date: 2024-09-26 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

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Basic Information

Standard Code: T/CERS 0035-2024

Standard Type: Group standards

Standard Status: Active

is_force_gb: no

CCS Name: -

ICS Name: Nuclear power stations, safety

Publish Date: 2024-09-26

Implement Date: 2024-09-26

Scope

Main technical content: The safety system of VVER nuclear power plants adopts a four-series redundant design, which ensures high safety. In terms of design, VVER nuclear power plants feature a series of safety systems that can carry out maintenance during unit power operation, but due to the strict requirements of the nuclear power plant technical specifications (TS), the maintenance of the nuclear power plant safety system needs to be arranged during the shutdown period, which fails to make full use of the advanced features of the four-series redundant design. According to the design characteristics of VVER nuclear power plants, after adjusting the provisions of the technical specifications by using a risk-guided method, the maintenance activities of the safety system during the shutdown period of VVER nuclear power plants can be adjusted to be carried out during power operation, which can improve the flexibility of VVER nuclear power plant operation, reduce the pressure of major overhaul work, and improve the quality of safety system maintenance and equipment reliability.