Tjocklek (mm) T 25 a 25 < t 50 b t >50 S235 till S355 (1.1, 1.2, 1.4) G N O c. S420 till S700 (1.3, 2, 3) O O O. Austenitiska rostfria stål G N O

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1 EN 1090 hänvisar till EN för krav på svetsansvarigs kompetens. Kompetensnivåerna beror av utförandeklass, plåttjocklek och stålsort och delas in i nivåerna G-grundläggande, N-normal och O- omfattande, se tabell nedan. Utförandeklass EXC 2 Stålsort Tjocklek (mm) T 25 a 25 < t 50 b t >50 S235 till S355 (1.1, 1.2, 1.4) G N O c S420 till S700 (1.3, 2, 3) N O d O Austenitiska rostfria stål G N O Austenit-ferritiska rostfria stål N O O S235 till S355 (1.1, 1.2, 1.4) N O O EXC 3 S420 till S700 (1.3, 2, 3) O O O Austenitiska rostfria stål N O O Austenit-ferritiska rostfria stål O O O EXC 4 O O O a Fotplåtar och ändplåtar 50 mm b Fotplåtar och ändplåtar 75 c För stål upp till och med S275 räcker N d För stål N, NL, M och ML räcker kunskapsnivå N Kravet för nivå G och N anses uppfyllt om svetsansvarig innehar diplom från genomgången IWSutbildning. Om detta saknas kan kompetensen hyras in och ingå i företagets FPC. Om företaget har en person som anses uppfylla kompetenskraven utan att ha genomgått en IWS-utbildning kommer en muntlig utfrågning att ske av en svetsexpert vid företagets revision för certifiering enligt EN EWF, European Federation for Welding, Joining and Cutting har skrivit en vägledning med krav på kursinnehåll för kurser som syftar till att utbilda svetsansvariga för nivå G (grundläggande och nivå N (normal) enligt EN Efter varje kursavsnitt ges en sammanfattning av vilken kunskap som förväntas av deltagarna efter genomgånget kursmoment. Nedan följer en sammanställning av den kunskap som en svetsansvarig förväntas ha för nivå G respektive N enligt EWF s guideline.

2 Competence requirements for Responsible Welding Coordinators level B () and level S () according to EN 1090 Welding personnel having an IWS diploma are accepted. If not, knowledge of the following has to be confirmed. 1. Welding processes and equipment. 1.1 General introduction to welding technology Outline the major differences between each main type of welding process, e.g. fusion arc, resistance, flame, forge etc. Differentiate between processes and reference to standards Recognize a welding process by the common abbreviation 1.2 The arc Describe an electric arc; its main areas and their importance to welding and arc stability Outline the generation of heat in the arc Give examples of the influence of magnetic fields on the electric arc Outline appropriate solutions to solve magnetic deflection problems Describe arc characteristics for DC and AC 1.3 Power sources for arc welding Outline how each type of welding power source works (AC and DC) including the most common devices used. Describe for each type of arc welding power source the static characteristic, operation point and control of arc stability Outline the meaning of open circuit voltage, arc voltage short circuit current, duty cycle of a power source, voltage losses and current to cable relationship Be able to select the appropriate power sources för a given welding process. Recognize the various settings and switches on different power sources and their effects. Outline the major differences between each main type of welding process, e.g. fusion arc, resistance, flame, forge etc. Differentiate between processes and reference to standards Recognize a welding process by the common abbreviation Describe an electric arc; its main areas and their importance to welding and arc stability Outline the generation of heat in the arc Give examples of the influence of magnetic fields on the electric arc Outline appropriate solutions to solve magnetic deflection problems Describe arc characteristics for DC and AC Outline how each type of welding power source works (AC and DC) including the most common devices used. Describe for each type of arc welding power source the static characteristic, operation point and control of arc stability Outline the meaning of open circuit voltage, arc voltage short circuit current, duty cycle of a power source, voltage losses and current to cable relationship Be able to select the appropriate power sources för a given welding process. Recognize the various settings and switches on different power sources and their effects.

3 1.4 TIG Welding Outline TIG welding including arc ignition methods and their most common applications. Give examples of the most common application for each type of current, polarity and electrode type. Give examples of the most important applications and select the appropriate values for welding parameters. Know how to use and care for the equipment and accessories. Read given standards for consumables. Give examples of TIG applications, joint preparation and potential problems to Outline potential hazards and methods of safe MIG/MAG Welding Describe and compare the principles of MIG/MAG welding including metal transfer modes and applications. Identify the most common applications for each type of current, polarity and electrode. Identify the range of application, appropriate joint preparations and potential problems to be Identify the influence of the welding parameters on the weld bead and be able to outline welding parameters for particular application. Describe potential hazards and methods of safe Outline the various functions of the main components of the equipment and accessories. Demonstrate the use of appropriate standards for consumables. Give examples on how consumables should be selected. Know how to use and care for the equipment and accessories. Describe and compare the principles of TIG welding including arc ignition methods and their application. Explain the selection of appropriate type of current, polarity, shielding gas and electrode type according to application. Identify the range of application appropriate joint preparations and potential problems to be Identify an appropriate range of welding parameters for particular applications. Explain the purpose and functions of each component of the equipment an accessories. Interpret the use of appropriate standards. Describe potential hazards and methods of safe Describe and compare the principles of MIG/MAG welding including metal transfer modes and applications. Identify the most common applications for each type of current, polarity and electrode. Identify the range of application, appropriate joint preparations and potential problems to be Identify the influence of the welding parameters on the weld bead and be able to outline welding parameters for particular application. Describe potential hazards and methods of safe Outline the various functions of the main components of the equipment and accessories. Demonstrate the use of appropriate standards for consumables. Give examples on how consumables should be selected. Know how to use and care for the equipment and accessories.

4 1.5.2 Flux Cored Arc Welding Describe the principles of Flux Cored Arc welding including their applications. Identify the most common applications for each type of current, polarity and electrode. Identify the range of application, appropriate joint preparations and potential problems to be Identify the influence of the appropriate welding parameters on the weld bead and be able to outline welding parameters for particular applications. Describe potential hazards and methods of safe Outline the various functions of the main components of the equipment and accessories. Demonstrate the use of appropriate standards for consumables. Give examples on how consumables should be selected. Know how to use and care for the equipment and accessories. Describe the principles of Flux Cored Arc welding including their applications. Identify the most common applications for each type of current, polarity and electrode. Identify the range of application, appropriate joint preparations and potential problems to be Identify the influence of the appropriate welding parameters on the weld bead and be able to outline welding parameters for particular applications. Describe potential hazards and methods of safe Outline the various functions of the main components of the equipment and accessories. Demonstrate the use of appropriate standards for consumables. Give examples on how consumables should be selected. Know how to use and care for the equipment and accessories. 1.6 MMA Welding Outline the principles of MMA welding Describe the principles of MMA welding Outline how to select the appropriate type of Describe how to select the appropriate type of current, polarity and electrode according to current, polarity and electrode according to application. application. Identify the range of application, appropriate Identify the range of application, appropriate joint preparations and potential problems to be joint preparations and potential problems to be Identify an appropriate range of welding Identify an appropriate range of welding parameters for particular applications parameters for particular applications List potential hazards and methods of safe Describe potential hazards and methods of safe Outline the purpose and functions of each Outline the purpose and functions of each component of the equipment and accessories. component of the equipment and accessories. List the appropriate methods of handling, control Describe the appropriate methods of handling, and storage of the various types of electrodes. control and storage of the various types of electrodes. Demonstrate the use of appropriate standards. Demonstrate the use of appropriate standards. - Describe the influence of electrode coating on droplet transfer and weld material properties.

5 1.7 Submerged Arc Welding Explain the principle of the SAW process including arc striking methods and their applications. Explain the criteria for evaluating the applicable welding parameters. Identify the application range, joint edge preparation and potential problems to Clarify the procedures for the set-up of power sources. Explain the criteria for the selection of flux-wire combinations. Interpret appropriate standards and welding procedures. Define welding instructions for welders and operators. Define potential hazards and methods of safe 1.8 Stud welding Describe the principles of Stud welding and its application. Name some common applications of the processes in the different industrial fields. Define potential hazards and methods of safe Know how to use and care for the equipment and accessories. Explain the principle of the SAW process including arc striking methods and their applications. Explain the criteria for evaluating the applicable welding parameters. Identify the application range, joint edge preparation and potential problems to Clarify the procedures for the set-up of power sources. Explain the criteria for the selection of flux-wire combinations. Interpret appropriate standards and welding procedures. Define welding instructions for welders and operators. Define potential hazards and methods of safe Describe the principles of Stud welding and its application. Name some common applications of the processes in the different industrial fields. Define potential hazards and methods of safe Know how to use and care for the equipment and accessories. 1.9 Cutting, Drilling and other edge preparation processes Describe the principles of: mechanical, flame arc, Describe the principles of: mechanical, flame arc, laser and plasma cutting. laser and plasma cutting. Identify the characteristic parameters for the Identify the characteristic parameters for the above mentioned processes. above mentioned processes. Make a comparison among different edge Make a comparison among different edge preparation processes, considering technical and preparation processes, considering technical and economic aspects. economic aspects. List potential risks and hazards related with edge preparation processes. List potential risks and hazards related with edge preparation processes.

6 2. Materials and their behavior during welding 2.1 Structure and properties of metals. - List pure metals and alloys. - Outline basic mechanical properties of metals. - Outline effect of loading conditions on metals properties. 2.2 Phase diagrams and Alloys - Identify solidification structure and segregation on relevant examples. - Outline the principles of strengthening mechanisms with appropriate examples. - Interpret the relationship between microstructure and phase diagrams. - Describe alloys and phase diagrams. 2.3 Iron Carbon Alloys Special items of the Fe-C diagram (types of Fe-C alloys) Influence of cooling rate, hardenability. TTT and CCT diagrams. Classification of heat treatment Fe-C alloys Influence of cooling rate, hardenability. Prevention of coarse structure Classification of heat treatment 2.4 Classification of steels - Properties of steel semi-products - Types of steel, particularly structural steels. - Use of standards for steel designation and standards on rolling products. - Knowledge of types of inspection documents. 2.5 Behaviour of structural steels in fusion welding Special items of the Fe-C diagram (types of Fe-C Explain the temperature distribution in welds alloys) and the microstructure formed as a result for a single pass weld versus a multi-pass weld. Influence of cooling rate, hardenability. Interpret the effects of heat input, cooling rate and multi-pass operation on weld metal solidification and the microstructure formed for a single pass weld versus a multi-pass weld. TTT and CCT diagrams. Explain the effects of the weld protection, the type of consumables on the microstructure of the weld metal and on its properties for a single pass weld versus a multi-pass weld.

7 Classification of heat treatment Draw areas of HAZ, the reasons for grain size and microstructure changes and their effects on properties for a single pass weld versus a multipass weld. Discuss the various aspects of weldability. 2.6 Heat treatment of base materials and welded joints Describe the major heat treatments and their Explain each of the major heat treatments and objectives. their objectives. Discuss the necessity to perform heat treatment Describe code requirements for heat treatment after welding depending of the type and thickness of steel, the application and the code - Predict the necessity to perform heat treatment after welding depending of the type and thickness of steel, the application and the code 2.7 Structural Steels Having knowledge of: Unalloyed structural steels Filler materials Determination of welding technology Application of standards for filler materials. Having knowledge of: Unalloyed structural steels Filler materials Determination of welding technology Application of standards for filler materials. 2.8 High Strength Steels List the different methods to obtain fine-grained Explain the different methods to obtain finegrained steels steels Explain the relationship between grain Explain the relationship between grain refinement and mechanical properties. refinement and mechanical properties. Interpret the relationship between grade and Outline appropriate applications weldability. Identify applicable welding processes and Interpret the relationship between grade and potential problems. weldability. Name the effects of heat treatment after welding Identify applicable welding processes and and deduce the conditions of such treatment. potential problems. - Name the effects of heat treatment after welding and deduce the conditions of such treatment. - Use the appropriate filler material. 2.9 Cracking Phenomena in welded joints Compare the metallurgical mechanisms for each of the major types of cracking. Appraise the susceptibility to cracking and suggest appropriate precautions to avoid cracking. Name the type of cracking and the reason for its occurrence. Compare the metallurgical mechanisms for each of the major types of cracking. Describe the effects of chemical and physical variables for each of the major types of cracking. Appraise the susceptibility to cracking and suggest appropriate precautions to avoid

8 List alternatives, which will reduce or eliminate the occurrence of lamellar tearing in welded construction /fabrication. Name the effects of heat treatment after welding and deduce the conditions of such treatment. cracking. Name the type of cracking and the reason for its occurrence from study of fractured material and its history. Choose suitable tests which will assist in finding solution of cracking problems. Propose alternatives which will reduce or eliminate the occurrence of lamellar tearing in welded construction/fabrication Stainless steels Outline the structures of the various stainless Outline the structures of the various stainless steels. steels and explain their behavior during welding. Outline welding processes and consumables for State the rules and principles governing each type of steel. corrosion phenomena. Outline the different treatment after welding. Indicate the choice of welding process and consumables for each type of steel using different diagrams. - Describe the different treatment after welding Testing of materials and welded joints Discuss the reasons for destructive testing Discuss the objective of each destructive test and the limitations of the data generated. Outline each of the major testing methods and the parameters to be measured. State when and why special testing should be specified. Describe the major testing methods and the parameters to be measured. Classify competence in carrying out testing to a given schedule. - Show competence in carrying out testing to a given schedule. 3. Construction and design 3.1 theory of structural systems - Understande in general the composition of forces. - Understand in general the resolution of forces. - Name the conditions of equilibrium. - Understand in general the equilibrium of structural systems. - Name bearing, constraints and the basic types of connections.

9 3.2 Fundamentals of the strength of materials - Understand in general the different types of stresses (normal stress, shear stresses) - Understand in general the different types of deformation (axial strain, shear strain etc). - Understand in general the stress-strain relationships. - Understand in general the stresses resulting from internal forces and moments. 3.3 Joint design for Welding Describe different types of welded joints. Identify different types of welded joints. Know how to apply each type of joint in function Apply (EN-) ISO 9692 according to the given of material, thickness and welding process. conditions. Explain the symbolic representation of welded Identify and use appropriate weld symbols. joints on drawings. - Explain the symbolic representation of welded joints in drawings. 3.4 s of weld design - Understand in general the different types of stresses in welded joints (nominal stress, hot spot stress, notch stress). - Understand simple welded joints (internal forces) - Understand cross-sections for welded joints. 3.5 Behaviour of welded structures under different types of loading. - Understand the requirements for the construction according to different types of loading and temperatures. - Identify globally groups of materials which meet strength requirements. - Identify the various types of fracture. 3.6 Design of welded structures predominantly static loading Understand the requirements for the Understand the requirements for the construction according to different types of construction according to different types of loading and temperatures. loading and temperatures. Identify globally groups of materials which meet Identify globally groups of materials which meet strength requirements. strength requirements. Identify the various types of fracture. Identify the various types of fracture.

10 4. Fabrication, applications engineering 4.1 Introduction to quality assurance in welded fabrication Outline of knowledge in: Main difference between quality assurance, quality control and inspection systems and their usage for welded fabrication. Goals for quality assurance and quality control. Writing quality control procedures. Recognition of some factors related to personnel Interpretation of standards (e.g. ISO 3834) and equipment, which influence the quality of a welded construction. Role of the Welding Coordinator in the fabrication industry. factors related to personnel and equipment, which influence the quality of a welded construction. - Role of the Welding Coordinator in the fabrication industry. 4.2 Quality control during manufacture Outline of knowledge in: Purpose of the WPS, and the advantages to the quality of the welded construction. Recognition of the main variables for a certain WPS qualification and its range of approval. Welder qualification purpose, and the advantages to the quality of the welded construction. Recognition of the EN and ISO/other valid standard for a welder qualification, and outline the main variables for a certain welder qualification and its range of approval. Traceability requirements for materials procedures and certificates and give examples. Main purpose of a WPS/WPQR/pWPS and the advantages to the quality of welded fabrication. Compile and review WPss for welded components in accordance with national and international standards. Interpretation of the standard for the qualification of a WPS, determine the main variables for a particular WPS qualification and its range of qualification in accordance with National and/or International standards. Main purpose of a welder qualification and the main advantages to the quality of welded fabrication. Interpretation of the standard for a welder qualification, determine the main variables for a particular welder qualification and its range of qualification. Main purpose of a welding operator qualification and the main advantages to the quality of welded fabrication. - Interpretation of the standard for a welding operator qualification, determine the main variables for a particular welding operator qualification and its range of qualification. - Definition of traceability requirements for material procedures and certificates and give examples.

11 4.3 Residual Stresses and Distortion State: The origin, influencing factors and magnitude of residual stress and distortion in welded fabrications. Relationships between the material at a certain temperature and its mechanical characteristics. Distribution of the residual stresses at weld (parallel to the weld axis, perpendicular, and through thickness, influence of the material thickness) Predict contraction and distortion in joints and structures. Develop procedures to minimize distortion and stress. How residual stresses may affect the behavior of a structure in service. 4.4 Plant facilities, welding jigs and fixtures Outline of knowledge in: The layout importance to achieve a higher and easier production Recognize the advantages of using fixtures, jigs and positioners. Recognize the type of fixture, jig and positioned to be used in a certain welded construction. Recognize the necessary characteristics for the auxiliary equipment to be used in a certain welded construction, cables, heat treatment equipment and temperature control. Outline the general precautions related to joint fit up and tack welding. 4.5 Health and safety The risk factors associated with welding from electricity, gases, fumes, fire, radiation and noise. The interpretation of Health and Safety regulations with respect of the above hazards. Select the appropriate methods to reduce each type of welding risk factors. The health effects of grinding and hazards regarding the heat. Safe working procedures to ensure the requirements are met. Using of protective cloting. Oxygen environment enrichment. The origin, influencing factors and magnitude of residual stress and distortion in welded fabrications. Relationships between the material at a certain temperature and its mechanical characteristics. Distribution of the residual stresses at weld (parallel to the weld axis, perpendicular, and through thickness, influence of the material thickness) Predict contraction and distortion in joints and structures. Develop procedures to minimize distortion and stress. How residual stresses may affect the behavior of a structure in service. Explain: Principles for improved productivity, safety and comfort. The advantages of using fixtures, jigs and positioners. Select the type of fixture, jig and positioned to be used in a certain welded construction. Select the type of auxiliary equipment to be used in a certain welded construction, cables, heat treatment equipment and temperature control equipment. The special requirements related to joint fit up and tack welding. The risk factors associated with welding from electricity, gases, fumes, fire, radiation and noise. The interpretation of Health and Safety regulations with respect of the above hazards. Select the appropriate methods to reduce each type of welding risk factors. The health effects of grinding and hazards regarding the heat. Safe working procedures to ensure the requirements are met. Using of protective cloting. Oxygen environment enrichment.

12 4.6 Measurement, Control and Recording in Welding. Explain: The methods iof measurement used in the The methods iof measurement used in the control of welding. control of welding. Working procedures for the measurement of Working procedures for the measurement of welding parameters. welding parameters. - Working procedures for the measurement and control of heat treatment operations. Procedures for the calibration, validation and monitoring of welding operations. 4.7 Non Destructive testing. State: The modes of operation of the principal NDT methods, their advantages and disadvantages when applied to welded fabrications. Weld imperfections, their causes and methods of detection. Interpretation of acceptance standards for weld imperfections. Identification of the principles of NDT interpretation. Selection of weld configurations and design to allow adequate application of NDT methods. Identification of the qualification of NDT personnel. Recognition of safety aspects. 4.8 Economics and Productivity State: The make up of costs associated with welding Welding and handling procedures including mechanization and automation to minimize production costs. Welding processes operation factor 4.9 Repair Welding Problems of making repair welds. Possible hazards likely to occur in making repair welds particularly for in-service repairs. Comprehensive procedures to be applied to weld repairs. The modes of operation of the principal NDT methods, their advantages and disadvantages when applied to welded fabrications. Weld imperfections, their causes and methods of detection. Interpretation of acceptance standards for weld imperfections. Identification of the principles of NDT interpretation. Selection of weld configurations and design to allow adequate application of NDT methods. Identification of the qualification of NDT personnel. Recognition of safety aspects. Elements of costs associated with welding. Costs of welding operations Select welding and handling procedures including mechanization and automation to minimize production costs. Problems of making repair welds. Possible hazards likely to occur in making repair welds particularly for in-service repairs. Comprehensive procedures to be applied to weld repairs.

13 Procedural and operator qualifications to be applied to repair welds. 5. Background of the EN Explain how En 1090 should control manufacturing of steel construction products. 6. Review of requirements, technical review Illustrate the potential hazards of a contract Translate the appropriate standards to working documents. Evaluating the (sub)contractor s ability for manufacturing. Being capable of providing a professional judgement on subcontracting. 7. Welding personnel Decide about the quality of a welder s qualification test performed. Decide on the validity of a welders performance qualification. Compile a list with welding personnel qualified for the project. 8. Equipment Safe and economic use of weld related equipment 9. Production planning To follow up a total production planning and proceed accordingly. Capable of making adjustments if necessary. To administer production data. 10. Qualification of the welding procedures. Compile a list with welding procedure qualification available/necessary for the project. Procedural and operator qualifications to be applied to repair welds. Explain how En 1090 should control manufacturing of steel construction products. Illustrate the potential hazards of a contract Translate the appropriate standards to working documents. Evaluating the (sub)contractor s ability for manufacturing. Being capable of providing a professional judgement on subcontracting. Decide about the quality of a welder s qualification test performed. Decide on the validity of a welders performance qualification. Compile a list with welding personnel qualified for the project. Safe and economic use of weld related equipment To follow up a total production planning and proceed accordingly. Capable of making adjustments if necessary. To administer production data. Compile a list with welding procedure qualification available/necessary for the project. 11. Welding procedure specifications and work instructions To set-up and using welding procedures To set-up and using welding procedures Setting up and organizing toolbox meetings. Setting up and organizing toolbox meetings.

14 12. Welding consumables Correct use of the appropriate welding consumables. 13. Materials Recognize essential differences in material certificates. Ordering the aoolied materials in fabrication manuals Correct use of the appropriate welding consumables. Recognize essential differences in material certificates. Ordering the aoolied materials in fabrication manuals 14. Inspection and testing before, during and after welding. Setting up and organizing welding inspection plans and response appropriate in case of deviations. deviations. To follow up and the interpretation of welding inspection plan and response appropriate in case of deviations. Incorporation into fabrication manuals. Setting up and organizing welding inspection plans and response appropriate in case of To follow up and the interpretation of welding inspection plan and response appropriate in case of deviations. Incorporation into fabrication manuals. 15. Non-conformance, corrective actions and quality records The correct assigning and processing of NCR c The correct assigning and processing of NCR c Oredering the applied materials in fabrication manuals. Oredering the applied materials in fabrication manuals. To set-up a fabrication manual. To set-up a fabrication manual. 16. Calibration and validation of measuring, inspection and testing equipment. The application of and/or the evaluation of the The application of and/or the evaluation of the correct use of testing equipment. correct use of testing equipment.