[Effectiveness of measures directing to lowering the dose of radiation to residents of rural settlements in the extended period after the accident at the Chernobyl atomic energy station].

Justification of the application of countermeasure options in the long term after the Chernobyl accident is presented exemplified by a number of rural settlements located in areas with different fallout density. Protective and rehabilitation countermeasures are ranked based on the criterion such as cost of 1 man.-Sv. Estimated are time periods when the need in countermeasures will persist for settlements located in areas with different contamination levels and internal dose contribution to the overall dose.