Unit 4036 Welding Inspection (M/651/0895) Assignment Brief 2026

Unit 4036 Welding Inspection Assignment Brief

Introduction

Welding is a widely used, safe and reliable method of joining materials. The strength and integrity of the welded joint is fundamental to its in-service performance. This performance is assured by vigorous inspection processes which form part of a comprehensive quality control programme.
This unit introduces students to the role of inspection in weld construction, the purpose and value of welding procedure and welder performance testing, as well as the range of non-destructive testing methods that can be employed to identify weld imperfections that could lead to in-service failure. The role and operation of quality assurance systems is also covered.

On the successful completion of this unit the student will be able to describe the purpose of weld process and operator performance testing, demonstrate an understanding of a range of non-destructive methods, their application and limitations. They will appreciate the roll and operation of quality assurance systems and be able to identify the most appropriate testing method with regard to material type, size and potential weld imperfections as well as an understanding of the economic impact resulting from failure of the joints for people, products and the environment.

Note: Welding and Welding Inspection are primarily practical tasks, this unit, together with Unit 4035: Welding Technology have been designed to support practical training in welding and welding inspection with the appropriate and necessary theory. It is anticipated that a student studying this unit will have prior experience of welding at Level 3.

Learning Outcomes

LO1 Describe the role and importance of inspection in weld construction

LO2 Illustrate the purpose and value of welding procedure and welder performance testing

LO3 Explain the operation and application of Non-destructive Testing (NDT)

LO4 Demonstrate the role of quality assurance systems in the welding process.

Essential Content

LO1 Describe the role and importance of inspection in weld construction

Requirements for testing materials and welded joints:

• Quality control, regulations governing welded structures, UK, European and International. Special application testing, e.g. nuclear
• Need for inspection of the weld process and operator inspection
• Roles and responsibilities of welding inspectors, relationship with other welding and inspection personnel. Role in maintaining standards of production and post-weld performance.

Testing methods:

• Overview of purpose and operation of destructive and non-destructive testing
• Types of destructive testing used in weld process and operator inspection.

Terminology:

• Terms and definitions used in testing and inspection processes.

LO2 Illustrate the purpose and value of welding procedure and welder performance testing

Testing requirements:

• Test requirements for procedure and performance testing/standardisation.

Weld imperfections:

• Clarify the characteristics of the fundamental types, possible position of weld imperfections and defects, their visibility with the current non-destructive testing (NDT) techniques
• Morphology of weld imperfections and their possible influence. National, European and international standards and codes for acceptance/rejections of weld imperfections.

Types of destructive testing used in weld process and operator inspection:

• Sectioning of weld joint, preparation for inspection, etching and examination.
• Macro etch testing, fillet weld break test, transverse tension test and guided bend test.

LO3 Explain the operation and application of Non-destructive Testing (NDT)

Fundamentals, applications and specifications of NDT:

• Operating principles and applications of: Liquid penetrant testing (LPT), magnetic particle testing (MPI), radiographic testing (RT), ultrasonic testing (UT) and Eddy current testing (ECT). Computed tomography (CT) scanning and developed acoustic emission techniques.

Interpretation and economics of testing:

• Interpretation of specific imperfections in welds revealed by above tests.
• Economic considerations of testing operations applied to welded fabrications.

LO4 Demonstrate the role of quality assurance systems in the welding process.

Quality assurance:

• Principles and levels of quality assurance, systems and operational consideration. Importance of accurate record keeping and monitoring of activities
• Quality assurance responsibilities associated with inspection activities as they relate to individuals, company organisation, generation and retention of records
• Risks related with a collapse or a failure of the joints for individuals, organisation, products and environment.

Learning Outcomes and Assessment Criteria

Recommended Resources

Note: See HN Global for guidance on additional resources.

Print Resources

Hughes S. E. (2009) A Quick Guide to Welding and Weld Inspection. Elsevier.

Singh R.P. (2020) Applied welding engineering processes, codes, and standards.  3rd Ed. Elsevier.

Wong, S.B. (2014) Non-Destructive Testing – Theory, Practice and Industrial Applications.

Saarbrücken: LAP (Lambert Academic Publishing)

Links

This unit links to the following related units:

Unit 4003: Engineering Science

Unit 4007: Machining and Processing of Engineering Materials

Unit 4009: Materials, Properties and Testing

Unit 4014: Production Engineering for Manufacture

Unit 4035: Welding Technology Unit 4037: Statistical Process Control

Unit 4068: Industrial Robots.

Answer

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