GB/T 35730-2017 in English
VALIDGeneral design requirements of pressurized water reactor nuclear power plantswith passive safety systems
- Issued on:2017-12-29
- Implemented on:2018-07-01
- File Format:PDF
- Delivery:Via email within 5 business days
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《GB/T 35730-2017非能动安全系统压水堆核电厂总设计要求》由TC58（全国核能标准化技术委员会）归口，TC58SC3（全国核能标准化技术委员会反应堆技术分会）执行，主管部门为国家标准化管理委员会。
Introduction
Analysis of the core content of the standard
| Design elements | GB/T 35730-2017 requirements | Comparison with traditional nuclear power standards |
|---|---|---|
| Safety objectives | Core damage frequency <10^-5/reactor year, radioactive release frequency <10^-6/reactor year | Generally required to be 10^-4~10^-5/reactor year |
| Seismic design | Single SSE benchmark (PGA=0.3g), OBE requirement cancelled | Usually SSE+OBE dual benchmark is adopted |
| Passive system | No intervention required for 72 hours, driven by natural forces | Reliant on active equipment + emergency power supply |
Detailed explanation of key technical requirements
Passive safety system design case (AP1000)
Appendix A/B of the standard uses AP1000 as an example to demonstrate the typical configuration of the passive system:
- Core makeup water tank: Emergency cooling by gravity injection
- Containment cooling system: Natural air circulation to remove heat
- Passive residual heat removal: High-level water tank + density difference drive
Implementation suggestions
- Modular construction: Refer to Chapter 7.8, the maximum lifting weight of the structural module is controlled within 800 tons
- Seismic verification: The time history analysis method is used to verify the structural integrity of the containment under SSE
- Fire partitioning: Set up a 3-hour fire resistance limit barrier according to HAD102/11 requirements
Standard evolution analysis
The significantly improved requirements of this standard are reflected in:
- The concept of Design Extended Conditions (DEC) is added, and it is required to consider beyond the design basis accident
- The requirements for hydrogen concentration control under severe accidents are clarified (<10% volume fraction)
- The platform diversity requirements of the digital instrumentation and control system are specified
Sample only — not a preview of GB/T 35730-2017
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