ROOT CAUSE FAILURE ANALYSIS OF BLANKING DEVICE OF STRAINER HOUSING USED IN STEAM TURBINE

Sandeep Kumar, Alok Singh, C Sasikumar

Abstract: Failure analysis is the process of identifying the causes and factors leading to undesired loss of functionality. Failure investigators use several kinds of notions to explain this loss. An important one is that of a root cause failure analysis. This paper presents a root cause failure analysis and methodology followed in post weld failure investigation of blanking device which fails during post weld heat treatment. After performing fault tree analysis it is found that the failure may happen due to material defect or generation of residual stress during post weld heat treatment

Keywords: Residual stress, Blanking device,Gr: 21CrMoNiV4-7, ANSYS, FTA

DOI: https://doi.org/10.15623/ijret.2013.0206016