MEM48021 — Apply metallurgical principles and techniques in welding and other thermal processes

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What an assessment for MEM48021 must cover

64 assessable components: 3 elements (10 performance criteria), 11 performance evidence and 43 knowledge evidence requirements. An audit-defensible tool maps every question and task back to these — that mapping is the coverage matrix Auditori generates alongside the assessment.

Elements & performance criteria

1 Determine job requirements

1.1Follow standard operating procedures (SOPs)
1.2Comply with work health and safety (WHS) requirements at all times
1.3Undertake consultations and briefings with managers, employers and customers to determine welding application requiring metallurgical specification and analysis

2 Select welding or thermal process principles and techniques

2.1Conduct consultations, briefings and research to determine welding application, metallurgical specification and analysis required
2.2Select relevant welding and thermal cutting techniques, principles and associated technologies for application

3 Undertake welding and thermal process analysis and specify welding or other thermal process solutions

3.1Apply relevant scientific principles in a consistent and appropriate manner to obtain the required welding or thermal process solution
3.2Use appropriate calculations and coherent units in the solution of engineering calculations
3.3Use significant figures in engineering calculations
3.4Apply techniques and associated technologies, software and hardware to obtain the required welding or thermal process solutions
3.5Report analysis results and recommend welding or thermal process solution

Performance evidence

following work instructions, standard operating procedures (SOPs) and safe work practices
undertaking consultations with relevant personnel and researching other sources of information including industry codes and standards in applying metallurgical principles and techniques to welding and other thermal practices appropriate to the application
selecting appropriate scientific principles to suit specific welding applications on at least two occasions
selecting appropriate basic mechanical techniques and associated technologies, software and hardware to suit required applications in welding
applying and manipulating appropriate formulas for applications involving engineering calculations
applying appropriate calculations to engineering situations
referring solutions to the original aim of the welding application
quoting solutions in appropriate units using appropriate significant figures
quoting limitations of solutions due to assumptions, scientific principles and techniques used
reporting test results and presenting and recommending welding or thermal process solution
Note: Where a volume and/or frequency is not specified, demonstration must be provided at least once.

Knowledge evidence

safe work practices and procedures
sources of information
welding principles and processes including:
mechanical
electrical chemical
metallurgical processes associated with welding
limitations of scientific principles associated with welding
weld defect description including for C-Mn and low alloy steels
shape defects
lack of fusion and penetration
inclusions
gas porosity
solidification porosity
solidification cracking
hydrogen heat-affected zone cracking
reheat cracking
weldability of aluminium and its alloys
hot cracking
heat affected zone cracking
welding age-hardened alloys
welding work-hardened alloys
weldability of carbon and low steels and the welding zones of steel
hot cracking including carbon-manganese and sulphur ratio
cold cracking
calculation of carbon equivalents
hydrogen content of steel welds and its control
residual stress avoidance and removal
calculation of weld pre-heat temperatures
tests for cold crack susceptibility
weldability of stainless steels and stainless-steel types
thermal and electrical conductivity
thermal expansion
Schaeffler and Delong diagrams to predict structures
austenitic stainless steels
other special grades
weldability of cast irons
special techniques
weldability of the nickel alloys
filler metals and braze welding
other thermal processes including:
cutting
gouging
shaping

Unit content sourced from training.gov.au — © Commonwealth of Australia, licensed under CC BY 4.0. Auditori is not affiliated with the Department of Employment and Workplace Relations.

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Questions about assessing MEM48021

What does an assessment tool for MEM48021 need to cover?

To satisfy the Principles of Assessment and Rules of Evidence, an assessment for MEM48021 needs to address all 64 unit components: 3 elements with 10 performance criteria, 11 performance evidence requirements, 43 knowledge evidence requirements, and the foundation skills. A coverage matrix mapping each question and task to these components is what an auditor looks for.

How does Auditori generate an assessment tool for MEM48021?

Auditori pulls the current release of MEM48021 from training.gov.au and generates a complete package: candidate assessment, assessor guide with model answers and observation criteria, and a coverage matrix mapping every component. A suitably qualified person then reviews and approves the draft in a built-in workflow — consistent with ASQA's guidance on AI use in VET — before export as branded PDF and editable Word.

Is the first assessment tool really free?

Yes. Every new account includes one free credit — enough to generate the complete assessment tool for MEM48021 — with no card and no subscription required. After that it's pay-as-you-go per unit.

Can I check my existing MEM48021 assessment instead of generating a new one?

Yes — upload your existing assessment or learner guide and Auditori maps it against every element, performance criterion, PE and KE of MEM48021, showing exactly what's covered and what's missing. Mapping costs a quarter of a credit.

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