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 knowledge of the materials, equipment and process sufficient to recognise out of specification products, process problems and materials faults. For example scorchy lumps, uneven mixing or nervy slabs.
Knowledge of organisation procedures, relevant regulatory requirements and 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 compound materials using an open mill blender. 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 theoperation of an open mill blender and its maincomponents sufficient for the consistent production of quality products including:
production workflow schedule and material demand
accurate monitoring of equipment operation and product quality
function and operating principles which influence the open mill blender equipment operation and product blending
the impact that chemical reactions/mechanical processes have on changing the state, form and condition of the materials
purpose of developing elasticity and controlling temperatures
effects of mastication, differential speed, overheating
focus of operation of work systems and equipment
correct use of equipment, processes and procedures
explain the impact of open mill blender machine speed, pressure, time and temperature have on finished product quality, production process and output
accurately monitor equipment operation and product quality
waste management and knowing the importance of reusing/working away non-conforming products wherever possible.
Competence also includes the ability to:
plan own work, including predicting consequences and identifying improvements
identify the role that friction plays in the blending of product
describe causes and effects of variations in blended batches
identify and describe own role and the roles of others involved in the open mill blender process.
Language, literacy and numeracy requirements
This unit requires the ability to read and interpret typical product specifications, job sheets, procedures, basic machine control panels, material labels and safety information as provided to operators.
Writing is required to the level of completing workplace forms.
Basic numeracy is required, eg 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 applies mainly to the rubber industry, but may also be relevant in the plastics industry. It includes the operation of all additional equipment where that equipment is integral to the mill blending process.
This competency would typically apply to the mixing of rubbers (or plastics), but may be applied to other materials mixed on an open mill blender. It also applies to the use of an open mill for operations where mixing/blending is incidental to the process such as slabbing off, stripping etc.
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:
mills
mill knifes
nip adjusting bars
bale hooks
relevant personal protective equipment.
Hazards
Typical hazards include:
cuts
nip hazards
material hazards
burn hazards
manual handling hazards.
Problems
'Respond to routine problems' means 'apply known solutions to a variety of predictable problems'. Typical process problems may include:
power failures
incorrect machine adjustments
incorrect quantities of materials
incorrect blending times
equipment breakdowns
short scorch products
forming the initial band
adjusting bank size for efficient mixing.
Typical product problems many include:
variations in materials
contamination of materials
lack of a homogeneous product.
Appropriate action for non-routine problems may be reporting to designated person or other action specified in the procedures.
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