EVALUATION OF THE CONSERVATISM OF NPP SAFETY ANALYSIS DOSE CALCULATIONS AS TYPICAL FOR LICENSING PURPOSES
Providing a reliable upper limit of radiological consequences to the plant personnel and the general public is typically the aim of a safety evaluation for anticipated operational occurrences or design basis accidents, as presented in a safety analysis report. A typical tool for dispersion calculation and dose evaluation is MACCS2. In the present analysis four types of calculations are presented: a first calculation, typical for licensing analysis, with the MACCS2 computer code. In a second step conservative assumptions e.g. ground release even if a stack release would be realistic, are dropped. In a third step calculation two is repeated with RODOS, a code (online decision making tool) used to predict the radiological consequences of an accidental release of activity. The step three calculation still contains all the conservative assumptions that are built in the MACCS2 code. In a last step these assumptions are removed, and a best estimate calculation on the dose to the public is performed. The whole analysis (step one to four) is repeated for different source terms (noble gases only, tritium dominated, primary system water...) and for different weather conditions.
Nikolaus Arnold Nikolaus Müllner Francesco D’Auria Oscar Mazzantini
GRNSPG, University of Pisa Pisa, Italy Nucleoelctrica Argentina S.A.Buenos Aires, Argentina
国际会议
18th International Conference on Nuclear Engineering(第18届国际核能工程大会 ICONE 18)
西安
英文
1-6
2010-05-17（万方平台首次上网日期，不代表论文的发表时间）