AWS CWI 9-Yr Recert study guide
AWS CWI 9-Yr Recert · Work through your exam, one topic at a time.
The AWS Certified Welding Inspector (CWI) is a professional credential offered by the American Welding Society. AWS describes it as a credential that "advances careers and ensures quality with flexible training options," and it sits within a broader family of AWS professional certifications that also includes the Senior Certified Welding Inspector (SCWI), Certified Welding Supervisor (CWS), Certified Welding Educator (CWE), and Certified Associate Welding Inspector (CAWI). The AWS CWI 9-Yr Recert study guide has 12 sections and about 3,647 words.
01Structural Steel (D1.1): Procedure and Performance Essentials
AWS D1.1 governs welded steel structures and rewards precise reading of its clauses. Understand the difference between a Welding Procedure Specification (WPS) and a Procedure Qualification Record (PQR): the WPS is the written instruction, the PQR is the documented evidence that the procedure was tested and passed.
347 words, about 2 min02Structural Aluminum (D1.2): Heat, Cleanliness, and Qualification
D1.2 addresses aluminum structures, where thermal conductivity, oxide films, and heat-affected-zone softening drive every rule. Candidates should know the alloy and temper designations used in structural work, the filler-metal selection logic, and why aluminum demands dedicated, clean tooling.
332 words, about 2 min03Bridge Welding (D1.5): Fracture Control and Qualification
D1.5 governs welded steel bridges and is stricter than D1.1 because of cyclic loading and fracture-critical members (FCMs). Candidates must understand the fracture control plan, the definition of an FCM, and the additional qualification, inspection, and documentation those members demand.
309 words, about 2 min04Railroad Welding (D15.1): Fatigue, Repair, and Qualification
D15.1 covers welding of railroad cars and locomotives, where fatigue loading and serviceability govern. Candidates should know the scope distinction between new fabrication and repair welding, the qualification requirements for procedures and personnel, and the inspection criteria.
315 words, about 2 min05Aerospace Welding (D17.1): Classification and Control
D17.1 governs fusion welding for aerospace applications and is built around weld classification and procedure qualification. Candidates must know the weld classes and how class determines the extent of examination and acceptance criteria.
279 words, about 1 min06Pipeline Welding (API 1104): Girth Welds and Acceptance
API 1104 covers welding of pipelines and related facilities, focusing on girth welds in transmission lines. Candidates should know the qualification of welding procedures, the qualification of welders and operators, and the acceptance standards for nondestructive testing.
301 words, about 2 min07Magnetic Particle Testing: Method and Interpretation
Magnetic particle testing (MT) detects surface and near-surface discontinuities in ferromagnetic materials. Candidates must know magnetization methods (direct and indirect, longitudinal and circular), the difference between continuous and residual magnetization, and the use of wet versus dry particles and fluorescent versus visible techniques.
304 words, about 2 min08Penetrant Testing: Process Control and Interpretation
Penetrant testing (PT) detects surface-breaking discontinuities in nonporous materials. Candidates must know the penetrant types (visible and fluorescent, method A through D), the developer types, and the dwell and development times.
287 words, about 1 min09ASME BPVC Section IX with B31.1 and B31.3: Qualification Logic
Section IX contains the qualification rules for welding procedures (QW-200) and performance (QW-300), while B31.1 (power piping) and B31.3 (process piping) supply the design, fabrication, and examination requirements. Candidates must understand that Section IX qualifies the procedure and the welder; the piping code tells you what to weld, how to examine it, and what is acceptable.
303 words, about 2 min10ISO Welding Standards: System and Personnel Logic
ISO welding standards form a system rather than a single code. Candidates should understand the roles of ISO 3834 (quality requirements for welding fabrication), ISO 9606 (qualification testing of welders), ISO 15614 (procedure qualification by testing), and ISO 14731 (welding coordination tasks and responsibilities).
306 words, about 2 min11NDE Coordination: Sequencing, Documentation, and Interfaces
NDE coordination means planning examinations so they occur at the right time, with the right method, by qualified personnel, and with results properly recorded. Candidates must understand method selection by defect type and location (surface versus volumetric), the timing of examination relative to welding and heat treatment, and the interface between the welding coordinator and NDE personnel.
290 words, about 1 min12Welding Coordination and QA: Control Before and After the Arc
Welding coordination and quality assurance cover everything that determines weld quality before and after welding: contract review, procedure availability, personnel qualification, material traceability, equipment condition, consumable control, and records. Candidates should understand the coordinator's responsibilities, the elements of a quality plan, and how traceability links base metal, filler, and welder to a specific joint.
274 words, about 1 min