Indications shall be sized using the applicable technique s provided in the written procedure for the ex- amination method. Indications shall be evaluated for ac- ceptance as follows:. For a butt weld jo ining two members having different thicknesses at the weld, t is the thinner of these two thicknesses. If a full penetration weld includes a fillet weld, the thickness of the throat of the fillet shall be in-.
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Descubra todo lo que Scribd tiene para ofrecer, incluyendo libros y audiolibros de importantes editoriales. Indications shall be sized using the applicable technique s provided in the written procedure for the ex- amination method. Indications shall be evaluated for ac- ceptance as follows:. For a butt weld jo ining two members having different thicknesses at the weld, t is the thinner of these two thicknesses. If a full penetration weld includes a fillet weld, the thickness of the throat of the fillet shall be in-.
The acceptance criteria for welders or welding op- erators who qualify on production welds by ultrasonic ex- amination as permitted in QW The results of welder and welding operator performance tests evaluated by volu- metric NDE shall be recorded in accordance with QW The equipment used for stud welding shall be completely automatic ex- cept for manual starting.
The remaining five welded stud joints shall be tested in torque using a torque testing arrangement that is substan- tially in accordance with Figure QW Alternatively, where torquing is not feasible, tensile testing may be used, and the fixture for tensile testing shall be similar to that shown in Figure QW In order to pass the test s , each of the five stud welds shall be subjected to the required torque shown in the fol- lowing table before failure occurs.
Nominal Diameter of Studs, in. Series Designated. Alternatively, where torquing to destruction is not fea- sible, tensile testing may be used. For carbon and austeni- tic stainless steel studs, the failure strength shall be not less than 35, psi MPa and 30, psi MPa , respectively. For other metals, the failure strength shall not be less than half of the minimum speci- fied tensile strength of the s tud material.
The equipment used for stud welding shall be completely auto- matic except for manual starting. In order to pass the test s , each of the five stud welds and heat affected zones shall be free of visible separation or fracture after bending and return bending or after hammering. Ten mockup welds are required to qualify each procedure. The mockup assembly shall essentially duplicate the tube hole configuration and tube-to-tubesheet joint design within the limits of the essential variables of QW The thickness of the tubesheet in the mockup test assembly shall be at least as thick as the production tubesheet, ex- cept it is not required to be thicker than 2 in.
The cladding may be represented by the base material of essentially equivalent chemi cal composition to the clad- ding composition. The mockup welds shall be submitted to the following tests sequentially and must meet the ap- plicable acceptance criteria.
The accessible surfaces of the welds shall be exam- ined visually with no magnification required. The welds shall show complete fusion and no evidence of burning through the tube wall, and shall be free from cracking or porosity.
The liquid penetrant examination shall meet the re- quirements of Section V, Article 6. The weld surfaces shall meet the requirements of QW Using a magni- fication of 10X to 20X, the exposed cross sections of the weld shall confirm. Comience la prueba gratis Cancele en cualquier momento. Cargado por Reda Elsawy. Fecha en que fue cargado Sep 27, Compartir este documento Compartir o incrustar documentos Opciones para compartir Compartir en Facebook, abre una nueva ventana Facebook. Denunciar este documento.
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Asme Bpvc Ix - 2013
A‐Numbers (ASME BPVC IX – 2013)
2-Asme Bpvc Section Ix-2013