Verification of Prediction Method of Plastic Collapse Stress for Pipe with Weld Overlay

Weld Overlays {WOL )have b己 en widely used in many counlries as e 丘 ective nieth 〔〕ds to repair pipes with stress corr ()sion oracks in nuclear power plants. Authurs have developed the theoretical equations to estimate p工astic collapse bending mornenLs for weld overlaid pipes “,ith circumferential part − through cracks ,based on net section stress approach . The ob ,ective of this paper is to cumpare 廿1e calculated stresses with oxperimentaldata of full scale WOL pipespecimens . The procedures of JSME 且tlless−for−service code were empluyed f〔,r the calculationS Gf Z factQr and llow stress . From the co parison of experimental data, it fs demonstrated that the rnethods are applicahle to the flaw asscssment for the JSME fitness −for−serv 正ce codc .