Nondestructive Testing service providers

  The sole purpose of welding procedures is to describe the details that are to be followed in the welding of specific materials or type of joint. The following is a   list of standard specifications for welding procedures  that are normally covered in welding procedures specification for all welding processes. Nondestructive Examination – ASME Section V A. Article 1, General Requirements: The Welding Inspector should be familiar with, and understand The Scope of Section V Rules for use of Section V Responsibilities of the Owner / User and Subcontractors Calibration, Inspection and Examination Record Keeping Requirements B. Article 2, Radiographic Examination: The Scope of Article 2 and General Requirements, The Rules for Radiography applied on butt welded seams: Required Marking; Type, Selection, Number, and Placement of IQI’s; Allowable Density and Density Ranges; Control of Backscatter Radiation; 3. Recording of inspection; C. Article 6, Liquid Penetrant Examination (I...

  Brazing is a process of joining dis-similar metal, where as welding is a process of joining similar metal. In this blog we can see about some of the details in Brazing procedure qualification Brazing involves melting of filler metal and flowing over the joining surfaces. The filler metal used is generally of lower melting point than the base metal. the base metal is just pre heated to make it readily fusible. The filler metals flows in to the gaps of closed fitted base metals by capillary action. The different types of brazing are : Torch Brazing Furnace Brazing Induction Brazing Resistance Brazing Dip Brazing The Brazing Process required a qualified Brazing Procedure (similar to a WPS , Welding Procedure Specification) and a Brazing operator qualification (similar to a welder qualification certificate ) . The gas used for producing the gas flame is generally Acetylene with Oxygen. Brazing Procedure & Approval The standard ASME BPVC , Section IX has qualification variables an...

  Welding Procedure Specification- WPS This document details, how to qualify a welding procedure specification-wps for weld metal overlay / cladding / surfacing , for both corrosion resistance overlay and wear resistance overlay welding. The reference standard selected for the purpose of qualification of cladding procedure and welder qualification is ASME Boiler and Pressure Vessel Code (BPVC) section IX. Step by step procedure for WPS preparation: Select the sample size (thickness of base metal) Prepare the test sample Weld the overlay / cladding over the test sample with appropriate filler metal Carry out the testings on the weld overlay as mentioned in the standard, Non Destructive Testing ( NDT ) & Mechanical Testing Prepare the Procedure qualification record ( PQR ) Prepare the Welding Procedure Specification ( WPS ) with ranges qualified for production Welder Qualification For the welder performed the PQR qualification test prepare the Welder certificate For additional we...