... flawed pipe allowable stress tensile properties hardness Abstract If a flaw in a high-toughness ductile pipe of a power plant is detected during periodic in-service inspection, stress applied at the flaw location of the pipe is compared with an allowable stress. When the applied stress...

... Abstract In a preliminary study on the creep rupture life scatter estimation of base metals of ASME Grade 91 type steel under actual service conditions performed by one of the authors, it was found that the creep rupture life curves and allowable stress of Grade 91 type steel pipes which were...

... for Code approval. A plate of Zry-4 procured by ORNL was used to obtain tensile properties that were used as the basis for determining the maximum allowable stresses applicable to the vessel design. The materials properties of primary interest for ASME Code application are tensile properties, fracture...

... for average rupture stress. The allowable stress of Gr.122 steel may decrease significantly when the F average concept and the multi region analysis are adopted. ASME P122 Time-temperature parameter method Overestimation of rupture life Allowable stress region analysis. In the 2001 Edition...