of The Welding Institute (CSWIP) and of the Canadian Welding Bureau (CSA W178.2). The American Welding Society offers the following programs: Certified Associate Welding Inspector Certified Welding Inspector Senior Certified Welding Inspector Certified Radiographic Interpreter The British Institute of Non-Destructive Testing offers three levels of certification: PCN Level 1 PCN Level 2 Weld Inspection PCN Level 3 Weld Inspection with radiographic interpretation The Welding Institute (TWI) in the United Kingdom offers the following certification scheme: CSWIP 3.0 (Level 1): Visual Welding Inspector CSWIP 3.1 (Level 2): Welding Inspector CSWIP 3.2 (Level 3): Senior Welding Inspector; with or without radiographic interpretation (3.2.1 or 3.2.2 respectively) The Canadian Welding Bureau offers the following programs: Level 1 Certified Welding Inspector Level 2 Certified Welding Inspector Level 3 Certified Welding Inspector The BINDT/PCN and TWI/CSWIP schemes are accredited by UKAS under ISO/IEC 17024. There are many other general schemes, as well as sector specific schemes. In 2008, the American Petroleum Institute introduced the API 577 Advanced Welding Inspection and Metallurgy programme of certification. Certification is issued following the successful completion of a multiple choice exam which is based on the recommended practice document API 577. Certification identifies the candidate as a 'Welding Inspection and Metallurgy Professional', as opposed to a certified welding inspector under other programmes. See also Welding Welding Procedure Specification List of welding codes References External links and further reading Canadian Welding Bureau (CWB) home page American Welding Society (AWS) home page Canadian Welding Association (CWA) home page TWI Certification Ltd (UK) CSWIP scheme Certification