【摘要】 冷却剂注锌是降低腐蚀释放速率和堆外放射性水平的有效途径。本文基于腐蚀释放试验数据建立了冷却剂注锌对腐蚀释放的影响关系，基于PBR(Pilling-Bedworth Ratio)模型定量分析注锌对燃料污垢的影响，并为中广核自主污垢分析软件CAMPSIS开发了冷却剂注锌模型。根据注锌电厂的运行经验对注锌模型进行了初步验证，软件计算结果表明，注锌后冷却剂中58Co和60Co的放射性水平会先升高，但是随着注锌的持续放射性水平逐渐降低；分别在第1循环和第8循环开始注锌，主管道的剂量率会降低约30%。更多还原

【Abstract】 Zinc injection in the primary coolant is an effective approach to reduce the corrosion release rate and the radioactivity level on out-of-core surfaces. In this paper, influence of zinc injection on corrosion release is established based on experimental corrosion release data. The influence of zinc injection on the fuel crud is quantitatively analyzed based on the PBR(Pilling-Bedworth ratio) analysis model. A zinc injection model is developed for CAMPSIS, an independent crud analysis software in CGN. Preliminary verification of the zinc injection model is conducted according to the operation experience of the zinc-injected plant.Calculation results of the software show that the radioactivity levels of 58Co and 60Co in the primary coolant will first increase after zinc injection, but gradually decrease with continuation of the zinc injection. The dose rate of the main pipes is decreased by about 30% with zinc injection in both the first and eighth cycles.更多还原