Application of structural INTegrity Assessment Procedure to nuclear power plant component

Abstract

Quite few analytical flow assessments methods as specific standard and guidelines there have been developed in recent years. Today, as one of a most comprehensive assessment procedure is SINTAP- Structural INTegrity Assessment Procedure. The SINTAP introduced the basic principles of R6 (rev. 3) and ETM. SINTAP procedure is possible to performed assessment for inhomogeneous configurations such as strength mis-matched weldments and an effect of residual stresses. Nevertheless, the SINTAP procedure take into account temperature transition region from ductile-to-brittle behavior of material. In the contribution the SINTAP procedure was applied to the failure analysis of cracked component. Structure integrity assessment is issued to failure prediction of cracked structural component regarding to increasing applied load or crack size. In order to ensure safe use of cracked structural component the many standards and procedures are available (e.g. SINTAP). The results obtained by using of these procedures consist always certain portion of conservatism, what leads to underestimation of the real carrying capacity of engineering component. In this paper a T-joint of 8 in. RHR nozzle on 29 in. RC hot leg as the part of a high pressured pipeline of the nuclear power plant has been considered as engineering component subjected to thermal shock. © Springer Science + Business Media B.V. 2009.