高温气冷堆氮气截止阀在线研磨维修方法研究

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中图分类号：TH138.5 文献标志码：A 文章编号：1671-5276（2025）03-0019-04

Research on Method of On-line Grinding and Maintenance for Helium Gas Isolation Valve in High Temperature Gas Cooled Reactor

DONGDailin1，WUXiao²，WUYiming³，FENGWei1，HUYuzhou1 （1.Key LaboratoryofNuclear Reactor System Design Technology，China Nuclear Power ResearchandDesign EngneeringCo.， Ltd.，Chengdu 610041，China;2.Huaneng NuclearEnergy TechnologyResearch InstituteCo，Ltd.，Shanghai 2O0126，China; 3.Huaneng Shandong Shidaowan Nuclear Power Co.，Ltd.，Rongcheng，2643Oo，China） Abstract：Heliumgasisolationvalveusedinhigh temperature gascooledreactorinnuclear powerplantisaplied toopenand shut theheliuminthereactorcircuit，anditssealingperformanceplaysacrucialroleinthesafeoperationofthereactor.Tocope with thedecreaseofthesealingperformanceofheliumgasisolationvalveandthefailureofthevalvedisassmblingfromthesystem，an on-linegrinding maintenanceequipmentisdesigned basedonthesealingsurfaceof heliumgasisolationvalve.Thesealing performancetestverifiesthefeasibilityandefectivenessofon-linegrinding maintenanceoftheheliumgasisolationvalvesiulant. Keywords：nuclear power；high temperature gas cooled reactor；isolation valve；on-line grinding；maintenance

0 引言

高温气冷堆作为第4代反应堆，其安全性较第3代反应堆有着较大的提高。（剩余4340字）