AWS CWI: Certified Welding Inspector Exam Practice Test

Base Materials, Heat Treatments & Metallurgy (Ferrous Materials) covers the properties of ferrous metals, heat‑treatment effects, microstructural changes, and how these influence welding performance, defect susceptibility, and post‑weld treatment requirements.

Code applications examination evaluates knowledge of major welding codes and standards, and how to apply them to real‑world projects, emphasizing code selection, interpretation, and documentation for compliance throughout the inspection process.

Definitions and terminology focus on the standardized language used throughout the welding industry, ensuring candidates can accurately interpret specifications, codes, technical documents, and communication requirements across diverse projects and organizations.

Destructive testing and properties examine how destructive tests reveal material properties such as tensile strength, hardness, impact resistance, and fatigue life, providing essential data for design and qualification decisions.

Destructive testing fundamentals describe the purpose and execution of tests that permanently alter or damage specimens to evaluate mechanical properties, including tensile, bend, impact, and fatigue assessments.

Duties and responsibilities outline the roles of a welding inspector, including planning, supervising, documenting, ensuring compliance with codes and specifications, training personnel, and maintaining quality assurance throughout projects.

Fabrication covers the practical aspects of constructing welded assemblies, including fit‑up, sequencing, welding techniques, quality control during production, and coordination with design and inspection teams throughout the project.

This domain covers the basic principles of welding, including safety, equipment basics, and introductory concepts that form the foundation for all subsequent welding knowledge and practice within the industry.

Inspection focuses on systematic approaches to examine welds, verify compliance, document findings, and communicate results, supporting continuous improvement and adherence to specifications throughout fabrication in the production process.

Joining and cutting processes examine the various methods of fusing and separating metals, including arc welding, gas welding, and cutting techniques, while emphasizing appropriate selection, parameters, and safety considerations for each application.

Material and design examines how material selection and design considerations affect weldability, performance, and inspection requirements, highlighting the impact of alloy composition, thickness, and joint geometry on final product quality.

NDE application focuses on selecting and applying appropriate nondestructive examination methods for specific welds and service conditions, considering material type, defect risk, and inspection accessibility throughout the inspection process.

NDE fundamentals introduce the basic concepts of nondestructive testing methods such as radiography, ultrasonic, magnetic particle, and liquid penetrant testing, highlighting their principles, equipment, and appropriate use cases.

Practical applications examination assesses the ability to apply theoretical knowledge to real‑world welding scenarios, including problem solving, decision making, procedural selection, and effective implementation safely under production constraints.

Procedure and performance qualifications detail the development, testing, and approval of welding procedures and the qualification of welders and operators, emphasizing record keeping, repeatability, and compliance with applicable codes.

Qualification addresses the processes for achieving and maintaining CWI status, including documented experience requirements, examination eligibility, continuing education, and renewal obligations that ensure ongoing professional competence through the certification lifecycle.

Reports and records detail the creation, maintenance, and archiving of inspection reports, test records, and certification documents, ensuring traceability, accessibility, and compliance with regulatory requirements for future audits.

Symbols—Welding and NDE teaches the interpretation of welding symbols and nondestructive examination (NDE) symbols on drawings, providing essential knowledge for accurate fabrication and inspection across a range of projects.

Utilization of specifications and drawings teaches how to read and apply welding specifications, blueprints, and engineering drawings in inspection work, ensuring accurate interpretation and compliance with design intent.

Visual examination addresses the techniques for inspecting welds with the naked eye or magnification, focusing on surface discontinuities, acceptance criteria, and systematic documentation to ensure consistent quality control.

Welding application and control explores how welding processes are applied in production, including parameter control, joint design, quality assurance measures, and the integration of procedural standards to achieve reliable outcomes.

Welding inspection and discontinuities cover identification, classification, and evaluation of weld defects, as well as appropriate corrective actions, repair techniques, and documentation requirements throughout the quality assurance process.

Welding related calculations focus on the arithmetic needed for joint design, heat input, preheat and interpass temperatures, and other quantitative aspects such as filler metal sizing and stress analysis.