秦山三期^(60)Co调节棒提棒后控制棒驱动机构气空间氘气可燃性安全评价  

Safety Assessment on Flammability of Deuterium in Air Space of CRDM After Withdrawal of ^(60)Co Control Rod for Qinshan Phase Ⅲ

作　　者：方立凯[1] 丁捷[1] 付亚茹[1] 

机构地区：[1]上海核工程研究设计院,上海200233

出　　处：《原子能科学技术》2012年第5期570-572,共3页Atomic Energy Science and Technology

摘　　要：由于控制棒驱动机构气空间内的氘气不能完成参与气体复合,而60 Co调节棒提出重水液面后棒表面温度较高,因此,需分析气空间内氘气的可燃性。本文采用理论计算加试验的方法,分别确定了60 Co调节棒提出重水液面后的温度及氘气混合气的可燃浓度和所需的最小点火温度。通过分析表明,在正常运行20个月内,60 Co调节棒提棒不会造成氘气混合气的爆燃。Since the deuterium（D2） in CRDM can’t be recombined completely,the surface temperature of the 60Co control rod is high when it is withdrawn,and it is required to evaluate the flammability of D2 mixture gas.In this article,theoretical and test method were used to determine the surface temperature of the 60 Co control rod when it was withdrawn,the minimum flammability volume fraction and ignition temperature,respectively.The results show it is unlikely that the high surface temperature can be the potential for D2 ignition.

关 键 词：60Co调节棒 重水堆 氘气 可燃性 

分 类 号：TL364.4[核科学技术—核技术及应用]