[en] The kinetics of vacancies and interstitials produced by irradiation in a substitutional binary alloy with complete miscibility is considered. Point defects are assumed do not interact with stress fields of sinks. At sinks the concentrations of interstitials and vacancies are fixed at their thermal equilibrium values. In spite of radiation-induced segregation causing local changes in compositions around sinks, all sinks remain unbiased towards absorption of defects of a certain type, i.e. segregation alone does not lead to preferential loss of either vacancies or interstitials at a given sink. The rate equations for the average defect concentrations are derived