摘要
在目前常用的计算核电厂事故概率大气扩散因子的模式基础上提出了考虑内边界层影响的计算模式，根据某待建滨海核电厂址大气弥散实验的实测参数，分别采用本模式和常用模式估算了厂址边界０５ ｋｍ 处的最终评价用事故概率扩散因子和各途径的剂量及有效剂量．计算结果表明，无论是事故概率扩散因子还是个人有效剂量，本模式给出的值都是常用模式的５９ 倍．因此，在不能忽略内边界层出现频率的滨海厂址。
A model of calculating the probabilistic atmospheric dispersion factor for accident release from nuclear power plant (NPP),in which the effect of internal bound layer was taken into account,was proposed.The final accident probabilistic dispersion factor used to evaluate dose,the dose for each pathway and the individual effective dose at the bound of a coastal NPP (0.5?km from the coastline) were estimated.The measured parameters from field atmosphere dispersion experiment on site of a NPP were applied.The result showed that not only the value of accident probabilistic dispersion factor but also the value of individual effective dose predicted were 5.9 times higher than those derived by a traditional model.Hence,the effect of internal bound layer on the accident dispersion factor and dose must be taken into account for coastal NPP when the frequency occurring internal bound layer is too high to be neglected.
出处
《环境科学学报》
CAS
CSCD
北大核心
1999年第5期471-477,共7页
Acta Scientiae Circumstantiae
关键词
核电厂址
事故排放
大气弥散因子
模式
参数
coastal nuclear power plant,accident release,atmospheric dispersion factor,modeling.
