Elements and Performance Criteria

RANGE STATEMENT
The range statement relates to the unit of competency as a whole. It allows for different work environments and situations that may affect performance. Add any essential operating conditions that may be present with training and assessment depending on the work situation, needs of the candidate, accessibility of the item, and local industry and regional contexts.
Where reference is made to industry codes of practice and/or Australian/international standards, the latest version must be used.
Context
This competency unit includes the extrusion and injection welding of PE, PP and other plastic components using electrical (or other) activated welding equipment.
It also includes the operation of all relevant ancillary equipment to assemble components prior to welding.
Specifications include Australian Standards, workplace specifications and instructions, and government codes and regulations.
Procedures
All operations are performed in accordance with procedures.
Procedures include all relevant workplace procedures, work instructions, temporary instructions and relevant industry and government codes and standards.
Tools and equipment
This competency includes use of equipment and tools such as:
electrical activated extrusion welding machines
electrical/pneumatic activated injection welding machines
measurement devices, including, timers, temperature probes and callipers
cleaning fluids and wipes (eg isopropanol)
plastics machining equipment
assembly jigs and clamps
relevant safety equipment
comprehensive work instructions.
Hazards
Typical hazards include:
hazardous cleaning fluids
plastic sheet material handling
heavy stationary and moving machinery
cutting and heating components.
Problems
'Anticipate and solve problems' means resolve a wide range of routine and non-routine problems, using product and process knowledge to develop solutions to problems which do not have a known solution/a solution recorded in the procedures.
Typical process and product problems may include:
incompatible materials (pipes/rods)
variable plastics sheet material grades and supplied welding rods/granules
equipment malfunction or wear and tear
variable factory and field site conditions.

The Evidence Guide provides advice on assessment and must be read in conjunction with the performance criteria, required skills and knowledge, the range statement and the assessment guidelines for this training package.
Overview of assessment
A holistic approach should be taken to the assessment.
Assessors must be satisfied that the person can consistently perform the unit as a whole, as defined by the Elements, Performance Criteria and skills and knowledge.
Critical aspects for assessment and evidence required to demonstrate competency in this unit
It is essential that the weld quality meets the requirements of the standard. This may require testing of the weld in accordance with the standard.
Consistent achievement of required quality standards is critical.
Assessment method and context
Assessment will occur using industrial plastic pipe/plate/sheet and welding equipment and will be undertaken in a work-like environment.
Competence in this unit may be assessed:
using appropriate, industrial equipment, situations and polymers
in a situation allowing for the generation of evidence of the ability to recognise, anticipate and respond to problems
by using a suitable simulation and/or a range of case studies/scenarios
through a combination of these techniques.
In all cases it is expected that practical assessment will be combined with targeted questioning to assess the underpinning knowledge and theoretical assessment will be combined with appropriate practical/simulation or similar assessment. Assessors need to be aware of any cultural issues that may affect responses to questions.
Assessment processes and techniques must be culturally appropriate and appropriate to the oracy, language and literacy capacity of the assessee and the work being performed.
Specific resources for assessment
This section should be read in conjunction with the Range Statement for this unit of competency. Resources required include suitable access to an operating plant or equipment that allows for appropriate and realistic simulation. A bank of case studies/scenarios and questions will also be required to the extent that they form part of the assessment method. Questioning may take place either in the workplace, or in an adjacent, quiet facility such as an office or lunchroom. No other special resources are required.
Access must be provided to appropriate learning and/or assessment support when required. Where applicable, physical resources should include equipment modified for people with disabilities.