METHOD OF EVALUATING MAXIMUM RADIOACTIVE CONTAMINATION OF MARINE ENVIRONMENT IN ACCIDENT SITES OR DUMPING SITES OF OBJECTS WITH SPENT NUCLEAR FUEL Russian patent published in 2010 - IPC G01T1/169 

FIELD: physics; geophysics.

SUBSTANCE: invention relates to environment protection, particularly to radioecological monitoring of offshore zones in accident sites, nuclear accidents and dumping sites of objects with spent nuclear fuel (SNF) and can be used for prognosis evaluation of the radiation environment in a region under investigation. In the seabed layer near a sunken object, oceanographic measurements of temperature, salinity and flow rate are taken. Based on the obtained data and in conditions of turbulent transfer of fission products, the dilution coefficient of fission products coming from the target object and the "flare" radio nuclide of the spent nuclear fuel formed after destruction of protective barriers are determined. Maximum radiation load on the medium is calculated based on the obtained data.

EFFECT: method enables evaluation of maximum radiation contamination of the marine environment in accident sites or dumping sites of objects with spent nuclear fuel and includes measurement under laboratory conditions of exit velocity of caesium-137 and/or crypton-85 - fission products of U-235, from samples of spent nuclear fuel similar to fuel of an accident object under conditions identical to those of the investigated zone of the seabed.

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