CWB Welding Inspector Level 3 study plan
CWB Welding Inspector Level 3 · Give each week a clear focus.
8 weeks · About 8 hours per week
Welding processes, consumables and metallurgy
Classify SMAW, GMAW, FCAW, SAW, and GTAW by current type, transfer mode, deposition rate, and typical application, and justify each choice against a stated joint and position.
Interpret consumable classification strings under AWS A5.x and ISO 2560/14171 systems, and match electrode or filler to base metal strength, toughness, and service condition.
Calculate heat input, preheat/interpass limits, and carbon equivalent for ten worked joint scenarios, showing unit conversions explicitly.
Explain solidification modes, segregation, and HAZ transformation behaviour for carbon steel, low-alloy steel, and austenitic stainless steel, and predict the likely defect for each.
Diagnose hydrogen-assisted cracking, lamellar tearing, and solidification cracking risks from process, consumable, and restraint inputs.
Your checkpoint
A one-page process comparison matrix covering five processes plus ten worked heat-input and carbon-equivalent calculations, self-marked to at least 90% accuracy.
Welding processes, consumables and metallurgy & Codes, standards and specification requirements
Relate CCT and TTT behaviour to achievable cooling rates for three plate thicknesses, and state the practical preheat consequence of each.
Map the code hierarchy linking AWS D1.1, ASME BPVC Section IX, ISO 9606, and ISO 15614 to their scope, qualification route, and inspection obligations.
Locate and paraphrase essential-variable clauses in two selected standards, and explain why each variable changes mechanical properties.
Compare acceptance criteria for porosity, undercut, and incomplete fusion across two standards, and identify where the stricter criterion governs.
Trace a single welded joint from design clause to acceptance clause across the applicable standard, noting every inspection hold point encountered.
Your checkpoint
An annotated code map that links at least fifteen specific clauses to the inspection action each one triggers, with clause numbers and standard editions cited.
Codes, standards and specification requirements & Welding procedure and performance qualification
Draft a complete WPS for a butt joint in carbon steel, including all variables a reviewer would check before approval.
Construct a PQR test-assembly plan specifying material, thickness, position, consumable, preheat, and test coupon extraction layout.
Distinguish essential, supplementary essential, and nonessential variables, and predict the requalification consequence of changing each.
Determine the qualified thickness, diameter, position, and consumable ranges produced by a stated set of qualification test results.
Evaluate a supplier's WPS submittal against code requirements and record each nonconformity with its clause reference.
Your checkpoint
A draft WPS plus a PQR cross-reference table showing every variable, its recorded value, its qualified range, and the supporting clause.
Welding procedure and performance qualification
Design a mechanical test matrix covering tensile, guided bend, charpy impact, and macro examination for a stated procedure.
Interpret test results against acceptance criteria and determine pass, fail, or retest status for each specimen.
Calculate qualified ranges for thickness, diameter, position, and heat input from a completed PQR data set.
Identify every requalification trigger arising from a described change in base metal, consumable, joint design, or thermal treatment.
Assess welder performance qualification records against continuity, position, and thickness limitations, and flag lapsed qualifications.
Your checkpoint
A mock PQR package with a completed qualification-range worksheet and a written pass/fail determination for all specimens.
Inspection, testing and non-destructive examination methods
Select the most suitable NDE method for planar versus volumetric defects in three joint configurations, and justify the rejection of alternatives.
Interpret radiographic images described in text for porosity, slag, incomplete penetration, and cracks, and apply the governing acceptance level.
Explain ultrasonic indication sizing, probe selection, and calibration-block requirements, and state the limits of detection for a given thickness.
Specify penetrant and magnetic particle technique parameters, including surface preparation, dwell time, and demagnetisation, for two component geometries.
Calculate image quality indicator sensitivity and source-to-film distance requirements for a specified geometric unsharpness limit.
Write a nonconformance report that states the indication, its location, the governing clause, and the disposition route.
Your checkpoint
An NDE method selection matrix for six defect scenarios plus eight written indication interpretations, each with a code-based accept or reject decision.
Inspection, testing and non-destructive examination methods & Quality assurance, auditing and inspection programme management
Construct an inspection and test plan with hold, witness, review, and monitor points assigned for a pressure-retaining weldment.
Evaluate calibration certificates and NDE personnel certification records against the applicable scheme and identify expired or out-of-scope items.
Apply an attribute sampling plan to a batch of welded components and determine the acceptance number and batch disposition.
Classify nonconformities as major or minor, and select repair, rework, use-as-is, or rejection with a written justification.
Design a corrective-action record that traces root cause through containment, corrective action, and verification of effectiveness.
Your checkpoint
A complete inspection and test plan for a fabricated pressure vessel, including point assignments, acceptance references, and record requirements.
Quality assurance, auditing and inspection programme management
Build a quality assurance programme outline covering document control, traceability, calibration, personnel qualification, and records retention.
Write an internal audit checklist of at least twenty questions mapped to the clauses of a selected quality standard.
Conduct a tabletop audit of a described fabrication facility and record findings with evidence, risk rating, and clause reference.
Compare certification routes for inspection personnel under ISO 9712 and employer-based schemes, and state the limitations of each.
Evaluate a welding consumable storage and issuance system for traceability gaps and recommend specific controls.
Your checkpoint
An internal audit checklist plus a tabletop audit report containing at least six findings and corresponding corrective-action requests.
Welding processes, consumables and metallurgy & Codes, standards and specification requirements & Welding procedure and performance qualification & Inspection, testing and non-destructive examination methods & Quality assurance, auditing and inspection programme management
Complete two full-length timed mock examinations under exam conditions and record every incorrect answer with its cause.
Re-derive the ten most frequently missed calculations, including heat input, carbon equivalent, qualification ranges, and IQI sensitivity.
Reconcile conflicting code interpretations from weeks 2 and 3, and state the governing clause for each conflict.
Produce a personal weak-topic list ranked by expected mark impact, and schedule targeted revision for the highest three.
Summarise each domain in a single page of decision rules that can be reviewed in the final week.
Your checkpoint
Two completed mock examinations scored at or above 85%, plus a remediation log listing every error, its root cause, and the corrective study action.
Milestones
Week 2: Score at least 80% on a closed-book 25-question quiz drawn only from Domains 1 and 2, and explain any missed item aloud without notes.
Week 4: Produce a PQR package that a peer can review against the code without asking clarifying questions, with zero unresolved variable gaps.
Week 6: Score at least 80% on a 40-question mixed mock covering Domains 1 to 4, with all NDE selection answers justified in one sentence each.
Week 8: Achieve at least 85% on two full-length timed mocks and demonstrate that every repeated error from the week 4 and week 6 checks has been corrected.