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.
This describes the essential skills and knowledge and their level required for this unit.
Application of an operational knowledge of the materials, equipment and process sufficient to recognise out of specification products, process problems and materials faults. For example high pressure is required to secure the retread and cushion gum to the casing to ensure adequate bonding. Therefore the correct amount of pressure applied by such equipment as envelopers and sealing rings needs to be monitored.
Knowledge of organisation procedures 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 curing process. Application of approved hazard control and safety procedures and the use of PPE in relation to handling materials, equipment operation and cleanup.
Knowledge of and skills in the operation of retread curing equipment and main components sufficient for consistent production of quality products including:
production workflow sequences and materials demand
the reasons for checking process control panels and reporting readings which are outside of normal range of process variability
accurately monitoring equipment operation and product quality
the potential effects of variations in raw materials and equipment operation in relation to quality of product
processing behaviour of polymers and the role of additives
waste management and knowing the importance of reusing non-conforming products wherever possible
correct selection and use of equipment, materials, processes and procedures
explain the effect of unauthorised or emergency shutdown in relation to safety and production requirements
identify factors which may affect product quality or production output and appropriate remedies.
Competence also includes the ability to:
plan own work, including predicting consequences and identifying improvements
identify when the operator is able to rectify faults, when assistance is required and who is the appropriate source for assistance
identify and describe own role and role of others involved directly in the retreading process.
Language, literacy and numeracy requirements
This unit requires the ability to read and interpret typical product specifications, job sheets, procedures, material labels and safety information as provided to operators.
Writing is required to the level of completing workplace forms.
Basic numeracy is required, e.g. to determine that two 25 kg bags are needed to make up a requirement for 50 kg.
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 curing operations in retreading operations. Curing is mainly of bonding agents.
This competency applies to most work environments within the tyre retreading sector, but does not include retread processes where the green extruded tread is laid onto the buffed casing. It includes the operation of all relevant additional equipment where that equipment is integral to the retreading 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 competency includes use of equipment and tools such as:
autoclave (such as electric and steam curing chambers)
envelopers
sealing rings
prepared casings
relevant personal protective equipment.
Hazards
Typical hazards include:
manual handling
noise
humidity
temperatures (such as from air and steam)
fumes/vapours
hazards from high pressures
stationary and moving machinery, parts and components
Problems
'Respond to routine problems' means 'apply known solutions to a limited range of predictable problems'. Typical process problems may include:
equipment malfunction
high humidity in curing oven
air not being extracted properly from the envelope
air blinding of steam equipment
material contamination
contaminated treads
poorly prepared/contaminated casing
poor quality bonding material
curing time/cycle
incorrect temperature settings
incorrect air pressure settings.
Typical product problems may include:
poor product finish
poor binding of retread to buffed casing
excessive trim/spue
out of round/eccentric.
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