Application

This unit of competency was developed for engineering fabrication trade training and the recognition of trade skills in selecting welding processes.

It defines the skills and knowledge required to identify basic material properties and select appropriate welding processes to produce welds that conform to AS 1554 General Purpose (GP) and American Bureau of Shipping (ABS) or equivalent as defined by the unit in conjunction with its prerequisites.

The unit includes all welding processes within the scope of AS 1554 GP and the identification of basic properties and characteristics of all commonly welded metals to the extent required to inform the selection of appropriate welding processes.

This unit must be selected in combination with one or more of the following units:

MEM05090 Weld using manual metal arc welding process

MEM05091 Weld using gas metal arc welding process

MEM05092 Weld using gas tungsten arc welding process

MEM05093 Weld using submerged arc welding process

MEM05096 Weld using flux core arc welding process

MEM05097 Weld using oxy fuel gas welding process.

No licensing, legislative or certification requirements apply to this unit at the time of publication.

What You'll Learn

Assessment Requirements

Performance Evidence

Evidence required to demonstrate competence in this unit must be relevant to and satisfy the requirements of the elements and performance criteria and include the ability to:

follow work instructions, standard operating procedures (SOPs) and safe work practices

match type and grade of base material from manufacturer’s marks or documentation to specifications on at least two occasions

identify properties of commonly used metals and alloys using reference information contained in materials and equipment suppliers handbooks, enterprise documentation or SOPs

identify potential welding related contingencies and consider solutions

identify and select appropriate welding process, considering process effects on materials on at least two occasions.

Note: Where a volume and/or frequency is not specified, demonstration must be provided at least once.

Knowledge Evidence

Evidence required to demonstrate the required knowledge for this unit must be relevant to and satisfy the requirements of the elements and performance criteria and include knowledge of:

safe welding practices and procedures and use of personal protective equipment (PPE)

hazards associated with the use of chemicals and the fumes emitted by welding processes

properties and characteristics of common metals and materials used in welding including tensile strength, grade, heat resistance, density, physical properties, flammable limits and melting point to the extent required to inform selection of an appropriate welding process

basic metallurgy principles associated with the effects of heat on alloys and grades of metals

common metal and alloying elements used in welding

common carbon steels, alloy steels and stainless steel grades used in welding

uses and purposes of various metals and alloys

distortion prevention measures for various metals

different types of electrodes.

Assessment Conditions

Assessors must:

have vocational competency in selecting welding processes at least to the level being assessed with relevant industry knowledge and experience

satisfy the assessor requirements in the Standards for Registered Training Organisations 2015 or its replacement and comply with the National Vocational Education and Training Regulator Act 2011, its replacement or equivalent legislation covering VET regulation in a non-referring state/territory as the case requires.

Assessment must occur in a functioning workplace. Where assessment in the workplace would be unsafe, impractical or threatens the environment, assessment must occur in a sufficiently rigorous simulated environment that reflects the circumstances that would be experienced in a functioning workplace. Assessment must cover all aspects of workplace performance, including task skills, task management skills, contingency management skills and job role environment skills.

Knowledge assessment may be either verbal or written but must adequately reflect the knowledge requirements of the unit in a functioning workplace.

Conditions for assessment must include access to all tools, equipment, materials and documentation required, including relevant workplace procedures, product and manufacturing specifications.

Assessment processes and techniques must be appropriate to the language, literacy and numeracy requirements of the work being performed and the needs of the candidate.

Foundation Skills

• text: This section describes those language, literacy, numeracy and employment skills that are essential to performance but not explicit in the performance criteria. Foundation skills essential to performance are explicit in the performance criteria of this unit of competency.

Prerequisite Units

• {'code': 'MEM13015', 'title': 'Work safely and effectively in manufacturing and engineering'}
• {'code': 'MEM16006', 'title': 'Organise and communicate information'}

Parent Qualifications

• MEM31519 — Certificate III in Engineering - Toolmaking Trade
  MEM
• MEM40119 — Certificate IV in Engineering
  MEM

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