NOSTRADAMUS - Arctic Council
Transcription
NOSTRADAMUS - Arctic Council
NOSTRADAMUS: real time computer system for estimation of atmospheric transfer IBRAE developed a software package NOSTRADAMUS to analyze accidents of various scales. NOSTRADAMUS package was designed to effective forecast of radiation situation in case of activity release in aerosol and gaseous forms with subsequent precipitation. NOSTRADAMUS code is based on a Lagrangian trajectory transport model Comparing to the standard Gaussian models, this model features the following capabilities: Calculation of contaminant transportation - up to hundreds kilometers ; Taking into account a real three-dimensional heterogeneity of wind field inside an atmospheric boundary layer ; Calculation of soil depositions taking into account distribution of aerosol particles by size; Taking into account fluctuations of source and meteorological parameters; Taking into account landscape features; Taking into account time period and coordinates of atmospheric precipitations. Computer system “NOSTRADAMUS” characteristics: PC oriented; Friendly WINDOWS interface; Forecast efficiency — real time calculations: one hour of real time transportation requires 1 - 2 minutes of computer time; Presentation of calculation is easy to understand - based on geographical maps The “NOSTRADAMUS” system includes atmospheric boundary layer model for the recovery of wind speed field vertical structure and atmospheric stability class on the base of synoptic information. It makes possible to use different sources and volumes of meteorological data for calculation. Data of long-term observations on vertical profile of turbulent diffusion coefficients provided by SPA “Typhoon” are used for the turbulent exchange coefficients calculation. Representation of Plume Propagation Process Model verification The “NOSTRADAMUS” system was verified using experimental data. “NOSTRADAMUS” verification matrix includes 12 different experiments on atmospheric dispersion, performed in different time by different teams in different countries. INEL Experiment. 131I Integral Ground-level Concentration at 60 km from the Source. 1 – Measured Data, 2 – LLL Gaussian Model, 3 - ADPIC Model, 4 – NOSTRADAMUS Lagrangian Model. DOE-IBRAE Cooperation After the table-top exercise conducted at FSUE NIIAR on December 9, 2003, in the framework DOE-IBRAE cooperation, it was concluded that it was necessary to upgrade the software of local crisis centers of radiation hazardous Minatom facilities for simulation of the consequences of radioactive releases at the early stage of accident evolution. DOE-IBRAE Cooperation 2004 FSUE SSC "Scientific and Research Institute of Nuclear Reactors" (NIIAR); Siberian Chemical Combine (SCC); Mining and Chemical combine (MCC); PA "Mayak“ . DOE-IBRAE Cooperation 2005 Electric and Chemical Plant (ECP),; Ural Electric and Chemical Combine, (UECC); Angarsk Electric Chemical Combine, (AECC); Plans for the future: DOE-IBRAE Cooperation in 2006 (plan) In 2006, installation of the NOSTRADAMUS” system is planned at the following facilities related to decommissioning of the nuclear submarines and nuclear powered vessels in the NorthWest Region of Russia: FSUE «ME «Zvezdochka» FSUE «SRZ «Nerpa» - Shipyard «Nerpa» FSUE «Atomflot»