Model 'PROLOG' for Countermeasures Efficacy Assessment and its Calculation Algorithm Verification on the Base of the Chazhma Bay Accident Data

摘要

Methodical approaches are presented that is used in computational model "PROLOG". This model is intended to assess radiological situation and counter measures efficacy after short term releases. Basic local Gaussian dispersion algorithm is supplemented with modules for plume rise, dry deposition velocities, building and complex terrain influence etc. The modules are intended to provide a compromise between simplicity, shortage of initial data and adequacy of the model in case of real accident. Approaches to dose and countermeasures efficiency assessments are presented as well. Plume rise, complex terrain and pollutant polydispersity modeling approaches were tested on the base of comparison of calculation and experimental results of doze rate and Co-60 surface contamination measured after Chazhma bay accident in 1985.