酸化处理豁免废液样品对其放射性测量的影响研究  

Study on the Effects of Acidized Exempt Liquid Waste Sample on Its Radioactivity Measurement

作　　者：尤成懋[1] 欧阳俊杰[1] 吴华雄[1] 张素杰[1] 白志良[1] 

机构地区：[1]大亚湾核电运营管理有限责任公司生产部,广东深圳518124

出　　处：《核科学与工程》2012年第A01期71-77,共7页Nuclear Science and Engineering

摘　　要：利用大亚湾和岭澳核电站的豁免废液开展酸化处理豁免废液样品对其放射性测量的影响研究。结果表明,受核素沉积效应的影响,豁免废液样品的核素活度测量值具有随样品放置时间延长而增大的趋势;酸性环境对核素沉积具有明显的抑制作用,可使其降低50%以上;对样品进行酸化处理,在取样当天不会对豁免废液样品的测量产生显著影响,但对放置较长时间的样品则具有明显影响;考虑低水平放射性测量本身的不确定性,核电厂对豁免废液取样当天测量不酸化的作法是可以接受的。Relevant study is carried out by using exempt liquid waste sampling from Daya Bay and Ling＇Ao nuclear power plants.The results show that,by the effect of radionuclide deposition,activity measurement values of exempt liquid waste have a trend that the values increase with the samples placing time prolonged.The acidic environment has a significant inhibiting effect for radionuclide deposition,which could be reduced more than 50%.Acidized exempt liquid waste samples has an unapparent influence for their activity measurement in a short period of time（for example,in the sampling day）,but for a longer time,it has an obvious influence.Considering the uncertainty of the low level radioactivity measurement,non-acidizing is acceptable in nuclear power plant,where exempt liquid waste samples are sampled and measured in the same day.

关 键 词：豁免废液 酸化 核素活度 放射性测量 

分 类 号：TM623[电气工程—电力系统及自动化]