摘要
主泵是核电站必不可少的设备 ,除维系机组的安全运行外 ,它还对辐射源项的控制起着不可替代的作用。选用合适的放射性核素控制主泵的停运对于压水堆机组大修时解决工期进度和减少辐射源项这一矛盾有重要指导意义。本文结合大亚湾核电站的运行经验 ,指出 110 m Ag是对反应堆换料水池表面辐射水平有主要贡献的核素 ,并给出了停运主泵时110 m Ag比活度的建议限值。
Primary pumps are indispensable equipment to a nuclear power station. Besides maintaining the safe operation a unit, they play an unreplacable function to control radiation source term.Selecting an optimized radionuclide to control the halt of primary pumps is an essential guide to deal with the problem between outage duration and reduction of radiation source term to a Pressurized Water Reactor (PWR) unit.From operational experiences of Daya Bay Nuclear Power Station (NPS),the paper points out that 110m Ag is the key nuclide which contributes largely to the radiation on the reactor unload/reload pool surface.The paper also recommends a limit of 110m Ag for halt of the primary pumps. (
出处
《辐射防护》
CAS
CSCD
北大核心
2000年第3期185-188,共4页
Radiation Protection
