Evolution of the radiation damage materials of the reactor VVER-1000

Dependences of vacancies clusters concentration in materials was investigated in real time for different radiation condition: neutrons flux density and clusters lifetime depending on temperature of environment. Dependence of density vacancies clusters sinks on their life-time (the environment temperature) and on neutrons flux density allows to select the radiation conditions for materials: according to the define radiation it is necessary to determine the parameters of material standard treatment before its placing in the core