This unit describes the performance outcomes required to carry out welding operations using tungsten inert gas (TIG) welding. It involves preparing for the task, selecting and using TIG welding equipment, setting gas flow pressures and welder settings, selecting and using suitable personal protective equipment (PPE), performing welding to given specifications, inspecting and testing weld quality, and completing workplace processes and documentation.
It applies to those working in the automotive service and repair industry.
No licensing, legislative, regulatory or certification requirements apply to this unit at the time of publication.
You may want to include more information here about the target group and the purpose of the assessments (eg formative, summative, recognition)
Evidence Required
List the assessment methods to be used and the context and resources required for assessment. Copy and paste the relevant sections from the evidence guide below and then re-write these in plain English.
Elements
Elements describe the essential outcomes.
Performance Criteria
Performance criteria describe the performance needed to demonstrate achievement of the element. Where bold and italicised text is used, further information is detailed in the range of conditions section.
1. Plan and prepare to weld
1.1 Job requirements are determined from workplace instructions
1.2 Welding information is accessed and interpreted
1.3 Hazards associated with the work are identified and risks are managed
1.4 Tools and equipment are selected and checked for serviceability
1.5 Work area is prepared and work is planned to carry out TIG welding, minimise waste, and use time efficiently
2. Weld materials using TIG welder
2.1 TIG welding equipment is prepared, set up and adjusted for specific welding job requirement
2.2 TIG welding equipment is used according to manufacturer operating procedures and safety and environmental requirements
2.3 Weld test runs are conducted according to workplace instructions and weld specifications
2.4 Materials are welded using standard or inverter TIG process to industry standards
3. Check welds
3.1 Welds are cleaned using appropriate tools and techniques and according to workplace instructions
3.2 Weld specifications and quality requirements are checked and confirmed by non-destructive inspection
3.3 Weld defects are identified, prepared for re-welding as required, and appropriate personnel are notified
4. Complete work processes
4.1 Final inspection is made to ensure work meets workplace expectations and component is presented ready for use
4.2 Work area is cleaned, waste and non-recyclable materials are disposed of, and recyclable material is collected and stored
4.3 Tools and equipment are checked, reported if faulty, and stored according to workplace procedures
4.4 Workplace documentation is processed according to workplace procedures
Before competency can be determined, individuals must demonstrate they can perform the following according to the standard defined in this unit’s elements, performance criteria, range of conditions and foundation skills:
carry out tungsten inert gas (TIG) welding to the following material sections:
150 mm long:
aluminium
steel
stainless steel
perform the above TIG welding in the following weld positions:
butt
outside corner
fillet
lap.
Individuals must be able to demonstrate knowledge of:
work health and safety (WHS), and occupational health and safety (OHS) requirements relating to carrying out TIG welding, including procedures for:
selecting and using personal protective equipment (PPE) for TIG welding, including approved welding helmets
using specialist welding tools and equipment
using protective screens and fume extraction system
manually handling vehicle components and TIG equipment
identifying and controlling hazards
environmental requirements, including procedures for trapping, storing and disposing of waste materials
different types of shielding gases used in TIG welding
TIG manufacturer operating procedures
material and consumable preparation techniques, including:
aluminium
steel
stainless steel
procedures for setting up and operating TIG equipment
methods and techniques for TIG welding, including:
welding positions:
butt
outside corner
fillet
lap
weld distortion and distortion control techniques
TIG testing procedures, including procedures for visual or non-destructive weld testing
procedures for identifying and rectifying weld defects, including:
lack of penetration
excessive weld build-up
excess heat
undercut
heat affected zone
procedures for protecting vehicle electronics during TIG welding
procedures for final inspection of welded components.
Assessors must satisfy NVR/AQTF assessor requirements.
Competency is to be assessed in the workplace or a simulated environment that accurately reflects performance in a real workplace setting.
Assessment must include direct observation of tasks.
Where assessment of competency includes third-party evidence, individuals must provide evidence that links them to TIG welding that they have carried out, e.g. work orders.
Assessors must verify performance evidence through questioning on skills and knowledge to ensure correct interpretation and application.
The following resources must be made available:
automotive repair workplace or simulated workplace
workplace instructions
TIG equipment operating instructions
PPE required for TIG welding
protective screens and fume extraction system
TIG welder and shielding gases
TIG consumables
materials specified in the performance evidence requiring TIG welding
tools, equipment and materials appropriate for carrying out TIG welding.
Submission Requirements
List each assessment task's title, type (eg project, observation/demonstration, essay, assingnment, checklist) and due date here
Assessment task 1: [title] Due date:
(add new lines for each of the assessment tasks)
Assessment Tasks
Copy and paste from the following data to produce each assessment task. Write these in plain English and spell out how, when and where the task is to be carried out, under what conditions, and what resources are needed. Include guidelines about how well the candidate has to perform a task for it to be judged satisfactory.
Elements
Elements describe the essential outcomes.
Performance Criteria
Performance criteria describe the performance needed to demonstrate achievement of the element. Where bold and italicised text is used, further information is detailed in the range of conditions section.
1. Plan and prepare to weld
1.1 Job requirements are determined from workplace instructions
1.2 Welding information is accessed and interpreted
1.3 Hazards associated with the work are identified and risks are managed
1.4 Tools and equipment are selected and checked for serviceability
1.5 Work area is prepared and work is planned to carry out TIG welding, minimise waste, and use time efficiently
2. Weld materials using TIG welder
2.1 TIG welding equipment is prepared, set up and adjusted for specific welding job requirement
2.2 TIG welding equipment is used according to manufacturer operating procedures and safety and environmental requirements
2.3 Weld test runs are conducted according to workplace instructions and weld specifications
2.4 Materials are welded using standard or inverter TIG process to industry standards
3. Check welds
3.1 Welds are cleaned using appropriate tools and techniques and according to workplace instructions
3.2 Weld specifications and quality requirements are checked and confirmed by non-destructive inspection
3.3 Weld defects are identified, prepared for re-welding as required, and appropriate personnel are notified
4. Complete work processes
4.1 Final inspection is made to ensure work meets workplace expectations and component is presented ready for use
4.2 Work area is cleaned, waste and non-recyclable materials are disposed of, and recyclable material is collected and stored
4.3 Tools and equipment are checked, reported if faulty, and stored according to workplace procedures
4.4 Workplace documentation is processed according to workplace procedures
This section specifies work environments and conditions that may affect performance. Essential operating conditions that may be present (depending on the work situation, needs of the candidate, accessibility of the item, and local industry and regional contexts) are included. Bold italicised wording, if used in the performance criteria, is detailed below.
Welding information must include:
manufacturer operating procedures
national standards and codes of practice for welding
workplace procedures.
Tools and equipment must include:
standard and inverter TIG equipment
tungsten electrodes
protective screens and fume extraction system
shielding gas
filler rods
PPE, including approved welding helmets.
Safety and environmental requirements must include:
work health and safety (WHS), and occupational health and safety (OHS) requirements, including procedures for:
selecting and using PPE for TIG welding, including approved welding helmets
using specialist welding tools and equipment
using protective screens and fume extraction system
manually handling vehicle components and TIG equipment
identifying and controlling hazards
environmental requirements, including procedures for trapping, storing and disposing of waste materials.
Before competency can be determined, individuals must demonstrate they can perform the following according to the standard defined in this unit’s elements, performance criteria, range of conditions and foundation skills:
carry out tungsten inert gas (TIG) welding to the following material sections:
150 mm long:
aluminium
steel
stainless steel
perform the above TIG welding in the following weld positions:
butt
outside corner
fillet
lap.
Individuals must be able to demonstrate knowledge of:
work health and safety (WHS), and occupational health and safety (OHS) requirements relating to carrying out TIG welding, including procedures for:
selecting and using personal protective equipment (PPE) for TIG welding, including approved welding helmets
using specialist welding tools and equipment
using protective screens and fume extraction system
manually handling vehicle components and TIG equipment
identifying and controlling hazards
environmental requirements, including procedures for trapping, storing and disposing of waste materials
different types of shielding gases used in TIG welding
TIG manufacturer operating procedures
material and consumable preparation techniques, including:
aluminium
steel
stainless steel
procedures for setting up and operating TIG equipment
methods and techniques for TIG welding, including:
welding positions:
butt
outside corner
fillet
lap
weld distortion and distortion control techniques
TIG testing procedures, including procedures for visual or non-destructive weld testing
procedures for identifying and rectifying weld defects, including:
lack of penetration
excessive weld build-up
excess heat
undercut
heat affected zone
procedures for protecting vehicle electronics during TIG welding
procedures for final inspection of welded components.
Assessors must satisfy NVR/AQTF assessor requirements.
Competency is to be assessed in the workplace or a simulated environment that accurately reflects performance in a real workplace setting.
Assessment must include direct observation of tasks.
Where assessment of competency includes third-party evidence, individuals must provide evidence that links them to TIG welding that they have carried out, e.g. work orders.
Assessors must verify performance evidence through questioning on skills and knowledge to ensure correct interpretation and application.
The following resources must be made available:
automotive repair workplace or simulated workplace
workplace instructions
TIG equipment operating instructions
PPE required for TIG welding
protective screens and fume extraction system
TIG welder and shielding gases
TIG consumables
materials specified in the performance evidence requiring TIG welding
tools, equipment and materials appropriate for carrying out TIG welding.
Copy and paste from the following performance criteria to create an observation checklist for each task. When you have finished writing your assessment tool every one of these must have been addressed, preferably several times in a variety of contexts. To ensure this occurs download the assessment matrix for the unit; enter each assessment task as a column header and place check marks against each performance criteria that task addresses.
Observation Checklist
Tasks to be observed according to workplace/college/TAFE policy and procedures, relevant legislation and Codes of Practice
Yes
No
Comments/feedback
Job requirements are determined from workplace instructions
Welding information is accessed and interpreted
Hazards associated with the work are identified and risks are managed
Tools and equipment are selected and checked for serviceability
Work area is prepared and work is planned to carry out TIG welding, minimise waste, and use time efficiently
TIG welding equipment is prepared, set up and adjusted for specific welding job requirement
TIG welding equipment is used according to manufacturer operating procedures and safety and environmental requirements
Weld test runs are conducted according to workplace instructions and weld specifications
Materials are welded using standard or inverter TIG process to industry standards
Welds are cleaned using appropriate tools and techniques and according to workplace instructions
Weld specifications and quality requirements are checked and confirmed by non-destructive inspection
Weld defects are identified, prepared for re-welding as required, and appropriate personnel are notified
Final inspection is made to ensure work meets workplace expectations and component is presented ready for use
Work area is cleaned, waste and non-recyclable materials are disposed of, and recyclable material is collected and stored
Tools and equipment are checked, reported if faulty, and stored according to workplace procedures
Workplace documentation is processed according to workplace procedures
Job requirements are determined from workplace instructions
Welding information is accessed and interpreted
Hazards associated with the work are identified and risks are managed
Tools and equipment are selected and checked for serviceability
Work area is prepared and work is planned to carry out TIG welding, minimise waste, and use time efficiently
TIG welding equipment is prepared, set up and adjusted for specific welding job requirement
TIG welding equipment is used according to manufacturer operating procedures and safety and environmental requirements
Weld test runs are conducted according to workplace instructions and weld specifications
Materials are welded using standard or inverter TIG process to industry standards
Welds are cleaned using appropriate tools and techniques and according to workplace instructions
Weld specifications and quality requirements are checked and confirmed by non-destructive inspection
Weld defects are identified, prepared for re-welding as required, and appropriate personnel are notified
Final inspection is made to ensure work meets workplace expectations and component is presented ready for use
Work area is cleaned, waste and non-recyclable materials are disposed of, and recyclable material is collected and stored
Tools and equipment are checked, reported if faulty, and stored according to workplace procedures
Workplace documentation is processed according to workplace procedures
Forms
Assessment Cover Sheet
AURVTW004 - Carry out tungsten inert gas welding
Assessment task 1: [title]
Student name:
Student ID:
I declare that the assessment tasks submitted for this unit are my own work.
Student signature:
Result: Competent Not yet competent
Feedback to student
Assessor name:
Signature:
Date:
Assessment Record Sheet
AURVTW004 - Carry out tungsten inert gas welding
Student name:
Student ID:
Assessment task 1: [title] Result: Competent Not yet competent
(add lines for each task)
Feedback to student:
Overall assessment result: Competent Not yet competent