IIW IWI-B study plan

Map the main arc welding processes (SMAW, GMAW, FCAW, GTAW, SAW) to their heat sources, current types and typical duty ranges, and explain in writing when each is preferred

Sketch and label the equipment chain for at least three processes, from power source through cable, torch or electrode holder, and workpiece return

Classify five common steels and two aluminium alloys by composition and explain how each behaves thermally during welding (expansion, conductivity, hardenability)

Solve eight numerical exercises on heat input, current density and deposition rate, showing units at every step

Explain the iron-carbon diagram and continuous cooling transformation behaviour well enough to predict microstructure in weld metal and heat-affected zone for three given cooling scenarios

Diagnose hydrogen-assisted cold cracking, solidification cracking and lamellar tearing from described conditions, and state one prevention measure for each

Describe shielding gas and flux functions for GMAW, TIG and SAW, and justify a gas choice for a stated material and position

Compare preheat and post-weld heat treatment purposes and estimate preheat need for two thick-section carbon steels using carbon equivalent

Interpret a butt-weld and a fillet-weld symbol on a supplied drawing extract and convert each into a plain-language joint description

Calculate weld throat thickness, leg length and required weld length for three loaded fillet joints using simple static stress reasoning

Explain joint preparation, root gap and edge preparation choices for plate from 6 mm to 40 mm

Identify distortion mechanisms and select counter-measures (sequence, backstep, pre-setting, restraint) for two described fabrications

Sequence a fabrication from material receipt to final acceptance, naming the inspection hold points at each stage

Distinguish essential and non-essential variables in a welding procedure specification and explain how each affects procedure qualification

Describe how a welding procedure qualification test is set up, what is tested, and what result would cause rejection

Select non-destructive testing methods appropriate to three described defect types and justify each choice

Perform a structured visual inspection of a prepared sample or realistic photograph set and record findings in a standard report format

Measure and judge weld cap height, leg length, undercut and misalignment against acceptance criteria you state explicitly

Explain the limits of visual inspection and when surface or volumetric methods must take over

Write non-conformance statements that name location, defect type, size and the criterion breached

Identify the roles of the inspector, the welding coordinator and the independent verification body in a typical quality system

Trace how a standard becomes a contract requirement, and distinguish specification, code and regulation

List the documents a welding quality dossier normally contains and explain the purpose of each

Explain calibration, traceability and record retention requirements for inspection equipment

Summarise the main health hazards of arc welding (fume, radiation, noise, electric shock) and the control measure that sits highest in the hierarchy for each

Explain fume extraction, ventilation and respiratory protection selection for confined-space and open-shop work

State the safety precautions for gas cylinders, hot work permits and fire watch

Describe environmental controls for waste, spatter, gas release and energy use

Complete a full timed mock examination under exam conditions and mark it honestly against the syllabus weighting

Re-study the two weakest domains identified by the mock, targeting specific missed concepts

Rehearse explaining an inspection decision aloud in under two minutes, as for an oral assessment

Consolidate a one-page formula and criteria sheet from memory, then verify it against notes