To increase operational safety over the lifetime and Long-Term-Operation
(LTO ) period due to the in-time prediction and avoiding of the potential failure in LWR technologies in general and specifically on the VVER reactors.

To determine the most affected and threatened components from the LTO point of view and describe the effect of the LTO on the material properties.

To provide a set of recommendations for future LTO-related assessments.

To harmonize the national methodologies and to obtain the generally acceptable set of recommendations for the assessment of swelling and thermal aging.

To develop a combined non-destructive and simulation tool, able to predict the non-acceptable state of the material and able for the assessment of the prolongation of the lifetime of the LWR NPPs.

To propose the methodology of the qualification of materials or components for the design life extension.