TORNADO REGIME AT THE BELARUS NPP AND THE THRESHOLD PROBABILITY OF TORNADO DANGER

摘要

Data on tornado passage are collected and analyzed as part of engineering and hydrometeorological research for the construction of the Belarus NPP. Statistical analysis of the data showed that the probability of a tornado passing through the NPP site is 2.94·10~(-6) reactor-yr and the computed tornado magnitude is 2.5 on the Fujita scale. The main working characteristics of a likely tornado incorporated in the NPP design are determined. It is noted that it would be expedient to refine the threshold probability of tornado danger by taking account of the tornado loads on the NPP.