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Elements and Performance Criteria

  1. Check work requirements
  2. Check process set-up
  3. Operate open mill blender to procedures
  4. Respond to routine problems in accordance with procedures

Range Statement

This field allows for different 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.

Regulatory framework

The latest version of all legislation, regulations, industry codes of practice and Australian/international standards, or the version specified by the local regulatory authority, must be used.

Applicable legislation, regulations, standards and codes of practice include:

health, safety and environmental (HSE) legislation, regulations and codes of practice relevant to the workplace, equipment and production processes and hazardous materials

Australian/international standards relevant to the materials being used and products being made

any relevant licence and certification requirements.

All operations to which this unit applies are subject to stringent HSE requirements, which may be imposed through state/territory or federal legislation, and these must not be compromised at any time. Where there is an apparent conflict between performance criteria and such requirements the legislative requirements take precedence.

Procedures

All operations must be performed in accordance with relevant procedures.

Procedures are written, verbal, visual, computer-based or in some other form, and include one or any combination of:

emergency procedures

work instructions

standard operating procedures (SOPs)

safe work method statements (SWMS)

formulas/recipes

batch sheets

temporary instructions

any similar instructions provided for the smooth running of the plant.

Tools and equipment

Tools and equipment include:

open mill blending equipment

ancillary equipment that is integral to the process.

Additional tools and equipment will be selected as required from:

mill knifes

nip adjusting bars

bale hooks

hoists/lifting equipment not requiring any special permits or licences

manual handling aids, such as hand carts and trolleys

relevant personal protective equipment (PPE).

Hazards

Hazards must be identified and controlled. Identifying hazards requires consideration of:

weight, shape, volume of materials to be handled

hazardous products and materials

knives, blades, cutting and nipping tools

sharp edges, protrusions or obstructions

slippery surfaces, spills or leaks

rotational equipment or vibration

high temperatures

smoke, dust, vapours or other atmospheric hazards

electricity

gas

gases and liquids under pressure

structural hazards

equipment failures

machinery, equipment and product mass

other hazards that might arise.

Routine problems

Routine problems must be resolved by applying known solutions.

Routine problems are predictable and include one or more of:

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

variations in materials

contamination of materials

lack of a homogeneous product.

Known solutions are drawn from one or more of:

procedures

training

remembered experience.

Non-routine problems must be reported according to according to relevant procedures.


Performance Evidence

Evidence required to demonstrate competence in this unit must be relevant to and satisfy the requirements of the elements and performance criteria and demonstrate the ability to:

read and interpret procedures, job specifications, basic machine control panels, material labels and safety data sheets (SDS)

select and use materials, procedures, tools and equipment to meet job specifications

monitor open mill blending equipment and ancillary equipment using measured/indicated data and smell, sight, sound and feel as appropriate

monitor and interpret key variables, including:

speed

pressure

temperature

duration

output rate

product integrity and general conformance to specification/sample

operate and adjust the equipment to meet product quality and production output specifications

pause the equipment or shut down equipment in normal and abnormal circumstances

identify hazards and apply relevant hazard controls

apply safety procedures

apply housekeeping procedures

apply waste management procedures

recognise early warning signs of equipment/processes needing attention or with potential problems

recognise routine and non-routine problems

identify when the operator is able to rectify faults, when assistance is required and who is the appropriate source for assistance

take action to resolve faults or report faults to appropriate personnel

distinguish between possible causes of routine faults, including:

raw material variations/contamination

process abnormalities

procedural errors

mechanical abnormalities

communicate effectively with team/work group and supervisors

complete workplace records

do basic arithmetical manipulations, including additions, subtractions, divisions, fractions and percentages.


Knowledge Evidence

Must provide evidence that demonstrates knowledge relevant to their job sufficient to operate under routine only supervision and to solve routine problems, including knowledge of:

the function of open mill blending equipment, machine components and guides

principles of operation of the equipment

the impact of common chemical reactions/mechanical processes the state, form and condition of the materials

purpose of developing elasticity and controlling temperatures

effects of mastication, differential speed, overheating

the potential effects of variations in raw materials and equipment operation in relation to quality of product

reasons for checking process control panels and reporting readings which are outside of normal range of process variability

processing behaviour of polymers and the role of additives

production workflow sequences and materials demand

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

routine problems, their probable causes and relevant corrective actions

organisation procedures relevant to the work environment/job role

hierarchy of control

hazards that may arise in the job/work environment and:

their possible causes

potential consequences

appropriate risk controls.