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Elements and Performance Criteria

1. Plan own work requirements.
   • Identify the most appropriate equipment to be used for production and upstream and downstream operations from production plan or request.
   • Identify and check materials required.
   • Implement measures to control identified hazards in line with procedures and duty of care.
   • Identify requirements for materials, quality, production and equipment checks.
2. Start up retread laying process to procedures.
   • Identify process settings required for product.
   • Set process to required settings.
   • Check materials are correct.
   • Take appropriate action for non-conforming materials.
   • Set up date, batch and materials markings to specifications, as required.
   • Complete pre-start checks.
   • Start up retread laying process.
3. Operate and make adjustments to the retread laying process to procedures.
   • Operate retread laying process, noting key variables.
   • Monitor product/process quality.
   • Make adjustments to remedy faults and non-conformity as required.
   • Establish a stable retread laying process.
   • Adjust process to minimise scrap and trim.
   • Clean, adjust and lubricate equipment as required.
4. Shut down equipment to procedures.
   • Determine type of shut down.
   • Leave machine in appropriate condition and with appropriate locks, tags or notices.
   • Complete relevant documentation.
   • Ensure area is clean and clear after the shutdown, in readiness for the next start-up.
5. Anticipate and solve problems.
   • Recognise a problem or a potential problem
   • Determine problems needing priority action.
   • Refer problems outside area of responsibility to appropriate person, with possible causes.
   • Seek information and assistance as required to solve problems.
   • Solve problems within area of responsibility.
   • Follow through items initiated until final resolution has occurred.

Required Skills

This describes the essential skills and knowledge and their level required for this unit

Application of knowledge of the materials equipment and process sufficient to recognise material and equipment conditions which may lead to out of specification production For example the inspection and preparation of casings is crucial to the quality if a retreaded tyre Therefore it is important to check once the casings have been prepared that there are no further problems with the casings prior to laying the retread

Knowledge of organization procedures quality requirements at each production stage and relevant regulatory requirements along with the ability to implement them within appropriate time constraints and work standards

Application of the knowledge of managing risks using the hierarchy of controls applied to the retread laying process Application of approved hazard control and safety procedures and the use of PPE in relation to handling materials equipment operation and cleanup

Competence includes the ability for the practical completion of the job to apply and explain

characteristics of materials and behaviour in relation to heat pressure flow rate and time

function and operating principles of retread laying processes equipment machine components and ancillary equipment

impact of tyre size faulty tyres speed rating finished and second hand tyres and aspect ration markings of tyres on product quality and production output

phases of the retread laying cycle and the effect of the key variables on product quality in order to make appropriate adjustments to process and equipment settings For example the adhesive laying phase is needed when laying precured treads to the casings to bond tread during vulcanisation

processing behaviour of those polymers which are used in the workplace

changes to materials at various stages of production

waste management and importance of nonconforming materials

impact of variations in raw materials and equipment operation in relation to final product

Skill to identify the range of possible causes of product faults

Competence also includes the ability to

plan own work including predicting consequences and identifying improvements

maintain output and product quality using appropriate instruments controls test information and readings

identify and describe own role and role of others involved directly in the retread laying process

identify factors which may affect product quality or production output and appropriate remedies

identify when the when assistance is required to solve problems

Language literacy and numeracy requirements

This unit requires the ability to read and interpret typical product specifications job sheets and material labels as provided to operators

Writing is required to the level of completing workplace forms and production reports

Basic numeracy is required eg to determine how many kg kg and kg bags are needed to make up a requirement for kg

Evidence Required

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 competence is demonstrated in the knowledge and skills defined in this unit These may include the ability to

identify critical materials properties and retread laying process variables in relation to the process requirements and the end product

make adjustments to the process as required

identify and take appropriate action on problems and potential problems

Consistent performance should be demonstrated For example look to see that

the process runs consistently and smoothly with the minimum need for human intervention

all safety procedures are always followed

Assessment method and context

Assessment will occur on an industrial retread laying machines and equipment and will be undertaken in a worklike environment

Competence in this unit may be assessed

by use of appropriate industrial retread laying equipment and machinery requiring demonstration of start up operation and shut down procedures

in a situation allowing the generation of evidence of the ability to recognise anticipate and resolve problems

by use of a suitable simulation andor a range of case studiesscenarios

by 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 practicalsimulation 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 studiesscenarios 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 andor assessment support when required Where applicable physical resources should include equipment modified for people with disabilities

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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 applies to tyre retreading. It includes the operation of all relevant additional equipment where that equipment is integral to the tread lay-up process.

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 unit of competency includes use of equipment and tools such as:

manual handling aids (eg hand carts and trolleys)

powered equipment/aids (eg compression rollers, staplers, cutting instruments and stone grinders)

tread application equipment (eg semiautomatic builders to applying cured or uncured tread)

moulds (for mould cure process)

ancillary equipment (eg guide lights)

hand tools (eg for roughing the surface, cutting and stapling the tread)

raw materials (eg moulded tread and cushion gum)

relevant personal protective equipment.

Hazards

Typical hazards include:

fumes/vapours

cutting tools

manual handling hazards

noise

moving components of machinery and equipment.

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 routine faults include:

incorrect tread selected

incorrect tyre inflation pressure.

Non-routine faults, which may have multiple causes include:

faulty casings

contamination of materials.

Typical process and product problems may include:

equipment malfunction

poorly aligned tread

tread too long/short

wrong tread profile.

Appropriate action for problems outside of area of responsibility may be reporting to an appropriate person.

Appropriate action for solving problems within area of responsibility includes asking questions and seeking assistance from appropriate persons/sources.

Variables

Key variables to be monitored include:

speed (including equipment speed, laying of cured and uncured tread)

pressure

colour

tyre components

tread alignment

product integrity and general conformance to specification and quality sample.

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