Cswip 31 Course Notes

  CSWIP 31 - Welding Inspector - Level 2 WIS5 Training Examination Services Granta Park, Great Abington Cambridge CB21 6AL, UK Copyright © TWI Ltd  Rev 2 April 2013 Contents Copyright   TWI Ltd 2013 wwwtwitrainingcom   CSWIP 31 - Welding Inspector – Level 2   Contents Section Subject 1 Typical Duties of Welding Inspectors 11 General 2 Terms and Definitions 21 Types of weld 22 Types of Joints (see BS EN ISO 15607) 23 Features of the completed weld 24 Weld preparation 25 Size of butt welds 26 Fillet weld 27 Welding position, slope and rotation 28 Weaving 3 Welding Imperfections and Materials Inspection 31 Definitions 32 Cracks 33 Cavities 34 Solid inclusions 35 Lack of fusion and penetration 36 Imperfect shape and dimensions 37 Miscellaneous imperfections 38 Acceptance standards 4 Destructive Testing 41 Test types, pieces and objectives 42 Macroscopic examination 5 Non-destructive Testing 51 Introduction 52 Radiographic methods 53 Ultrasonic methods 54 Magnetic particle testing 55 Dye penetrant testing 6 WPS/Welder Qualifications 61 General 62 Qualified welding procedure specifications 63 Welder qualification  Rev 2 April 2013 Contents Copyright   TWI Ltd 2013 wwwtwitrainingcom   7 Materials Inspection 71 General 72 Material type and weldability 73 Alloying elements and their effects 74 Material traceability 75 Material condition and dimensions 76 Summary 8 Codes and Standards 81 General 82 Definitions 83 Summary 9 Welding Symbols 91 Standards for symbolic representation of welded joints on drawings 92 Elementary welding symbols 93 Combination of elementary symbols 94 Supplementary symbols 95 Position of symbols on drawings 96 Relationship between the arrow and joint lines 97 Position of the reference line and weld symbol 98 Positions of the continuous and dashed lines 99 Dimensioning of welds 910 Complimentary indications 911 Indication of the welding process 912 Weld symbols in accordance with AWS 24 10 Introduction to Welding Processes 101 General 102 Productivity 103 Heat input 104 Welding parameters 105 Power source characteristics 11 Manual Metal Arc/Shielded Metal Arc Welding (MMA/SMAW) 111 MMA basic equipment requirements 112 Power requirements 113 Welding variables 114 Summary of MMA/SMAW 12 TIG Welding 121 Process characteristics 122 Process variables 123 Filler wires 124 Tungsten inclusions 125 Crater cracking 126 Common applications 127 Advantages 128 Disadvantages