CWI study materials
CWI study resources

CWI study plan

CWI · Give each week a clear focus.

8 weeks · About 7 hours per week

Week 1

Welding Fundamentals and Processes (Part A) & Codes, Standards, and Acceptance Criteria (Part C)

  • Define the five primary arc welding processes (SMAW, GMAW, FCAW, SAW, GTAW) and list the essential variables that control each

  • Identify and sketch the five joint types and the standard weld types performed on each

  • Label weld cross-section terminology (root, face, toe, throat, leg, reinforcement) on hand-drawn diagrams

  • Decode AWS filler metal classification numbers for at least six common electrodes and rods

  • Build a tabbed index of the codebook by clause number and title

Your checkpoint

A one-page weld and joint terminology sheet with 10 labeled hand sketches, plus a self-quiz scored at 90% or better

Week 2

Welding Fundamentals and Processes (Part A) & Codes, Standards, and Acceptance Criteria (Part C)

  • Calculate heat input, amperage-travel speed relationships, and deposition rates for 10 parameter sets

  • Explain how preheat, interpass temperature, and cooling rate affect microstructure and cracking

  • Differentiate essential, supplementary essential, and nonessential variables on a WPS/PQR

  • Trace the qualification path from procedure qualification through welder performance qualification

  • Map the clause structure of the structural welding code so any topic can be located in under 60 seconds

Your checkpoint

A worked problem set of 10 heat-input and travel-speed calculations plus a one-page WPS/PQR variable checklist

Week 3

Welding Fundamentals and Processes (Part A) & Codes, Standards, and Acceptance Criteria (Part C)

  • Distinguish discontinuities from defects and explain why the distinction is acceptance-criteria dependent

  • Classify porosity, slag inclusion, incomplete fusion, incomplete penetration, and undercut by cause and morphology

  • Identify distortion types and select corrective and preventive techniques for each

  • Match base metal groups and filler metal selections for common structural steels

  • Explain the purpose and content of a WPS, PQR, and welder qualification record

Your checkpoint

A discontinuity cause-and-prevention table with at least 15 entries, each naming the process, cause, and control measure

Week 4

Practical Inspection and Nondestructive Examination (Part B)

  • Describe the inspector's responsibilities before, during, and after welding

  • Sequence a complete visual inspection from fit-up through final acceptance

  • Identify visual inspection tools (filters, magnifiers, undercut gauge, fillet weld gauge, HI-LO gauge) and state when each is used

  • Explain the physical principles, capabilities, and limitations of PT, MT, UT, and RT

  • Select an appropriate NDE method for a given discontinuity type and location

Your checkpoint

A mock visual inspection report covering five described weld scenarios, documenting observed conditions and required actions

Week 5

Practical Inspection and Nondestructive Examination (Part B)

  • Measure fillet weld leg, throat, convexity, and concavity using gauge readings and compute effective throat

  • Convert measured groove weld reinforcement and misalignment values into acceptance comparisons

  • Interpret welding symbols and NDE symbols on fabrication drawings

  • Explain weld mapping, joint tracking, and documentation of inspection hold points

  • Describe how surface condition and accessibility constrain NDE method selection

Your checkpoint

A 10-problem gauge-reading and weld-size calculation worksheet with a self-check answer key

Week 6

Practical Inspection and Nondestructive Examination (Part B) & Codes, Standards, and Acceptance Criteria (Part C)

  • Apply code acceptance criteria to 20 written discontinuity scenarios and issue accept or reject determinations

  • Cite the specific clause supporting each determination

  • Explain qualification and certification requirements for inspection personnel

  • Compare visual and volumetric NDE results and justify repair, retest, or acceptance decisions

  • Describe repair procedure requirements and re-inspection steps

Your checkpoint

A 20-scenario accept/reject log with a clause citation recorded for every decision

Week 7

Codes, Standards, and Acceptance Criteria (Part C) & Welding Fundamentals and Processes (Part A)

  • Tabulate the most frequently applied code clauses covering workmanship, fit-up, tolerances, and acceptance

  • Apply prequalified joint detail limits, including thickness and process ranges

  • Review welding symbol fundamentals and construct symbols for six given joints

  • Explain stud welding and tubular connection requirements at a familiarization level

  • Reconcile any conflicts between drawing notes, the WPS, and the governing code

Your checkpoint

A tabbed codebook with at least 40 marked and annotated clauses plus a completed six-item welding symbol worksheet

Week 8

Welding Fundamentals and Processes (Part A) & Practical Inspection and Nondestructive Examination (Part B) & Codes, Standards, and Acceptance Criteria (Part C)

  • Complete two full-length timed practice exams under exam-day conditions

  • Analyze every missed item and assign it to a domain and a root cause

  • Re-drill the three weakest subtopics until the error log is fully resolved

  • Assemble an exam-day checklist covering references, calculator, and time allocation

  • Verify that all three domains receive balanced final review

Your checkpoint

An error log with 100% of missed items resolved and two timed exams scored at 85% or higher

Milestones

Week 2: Score 80% or better on a self-made 30-question quiz covering process fundamentals and heat input calculations, and locate any named code clause within one minute

Week 4: Score 80% or better on a 40-question mixed quiz spanning fundamentals and code application, and submit a completed mock inspection report

Week 6: Achieve 17 of 20 correct accept/reject determinations with a correct clause citation on at least 15 of them

Week 8: Score 85% or higher on two separate full-length timed practice exams, with every missed item logged and re-worked to a correct answer