СRACK-RESISTANCE AND DURABILITY OF NUCLEAR-POWER STATION (NPS) LOAD-CARRYING STRUCTURES FROM FRACTURE MECHANICS POINT OF VIEW

Abstract

The paper presents calculations pertaining to survivability of NPS load-carrying elements with respect to crack-resistance. These calculations reflect their resistance ability to actions of mechanical, thermal, hydro-dynamic, electro-magnetic  loads in the case when there are defects in the elements (initially technological defects or operational ones). The most dangerous defects are micro- and macro-cracks that create maximum high concentration of stresses and deformations.