This unit involves the skills and knowledge required to undertake in-servicing, fault finding, diagnosis, out of service inspection, repair or overhaul of material crushers including roll and/or door assemblies.

Material crushers are used to reduce solid materials, they operate by using components such as balls, jaws or rollers that move or turn together with great force.

Competency in this unit requires the ability to plan work, conduct in-service testing of material crushers, remove material crusher's equipment to facilitate maintenance,maintain material crushers, replace and/or install material crushers and to report on all completed work tasks. Individuals will, in general, work under supervision in an electrical, electronic and/or mechanical equipment repair workshop or on site.

Power generation maintenance personnel are typically trained and authorised to receive permits to work.

No licensing, legislative or certification requirements apply to this unit at the time of publication.

Note: Workplace practice

The application of the skills and knowledge described in this unit of competency may require a licence or training permit to practice in the workplace, where work is carried out on gas and electrical installations. Additional and/or other conditions may apply under state and territory legislative and regulatory licensing requirements.

ELEMENTS

PERFORMANCE CRITERIA

Elements describe the essential outcomes.

Performance criteria describe the performance needed to demonstrate achievement of the element.

1

Plan and prepare for work

1.1

Requirements including scope of work and assigned roles are identified and confirmed with appropriate personnel or by site inspection, in accordance with workplace procedures

1.2

Work, Health and Safety (WHS)/Occupational Health and Safety (OHS) regulations, legislative requirements, industry standards, codes of practice, manufacturers' specifications, environmental obligations and workplace procedures are reviewed in preparation for work

1.3

Resources are obtained and inspected for compliance with job specification

1.4

Relevant plans, drawings and manuals are selected and used, in accordance with workplace procedures

1.5

Correct materials and components for work are obtained and inspected, in accordance with workplace procedures, for compliance with job specification

1.6

Work is planned, sequenced and prioritised, in accordance with workplace procedures

1.7

Potential hazards are identified and risk control measures are selected and implemented, in accordance with the workplace procedures

1.8

Work area is prepared, in accordance with workplace procedures

2

Conduct in-service testing

2.1

In-service tests are carried out, in accordance with workplace procedures

2.2

Faults are located, in accordance with workplace procedures, using appropriate tools, equipment and testing techniques

2.3

Testing and fault finding results are analysed, in accordance with workplace procedures, to establish repairs or ascertain serviceability of material crusher

3

Remove equipment to facilitate maintenance

3.1

Isolations are confirmed, where appropriate, in accordance with workplace procedures and site requirements

3.2

Material crushers are disconnected, in accordance with workplace procedures

3.3

Material crusher components are removed, in a manner which will assist in replacement, in accordance with workplace procedures

3.4

Material crusher components are inspected for abnormalities, in accordance with workplace procedures

4

Maintain material crushers

4.1

Components or subassemblies are dismantled, cleaned and examined to verify tolerances, in accordance with workplace procedures, to determine need to replace, overhaul or repair material crusher

4.2

Sketches are made, data noted and components are marked for identification for reassembly or overhaul, in accordance with workplace procedures

4.3

Dimensional inspection is performed, in accordance with workplace procedures, using precision measuring devices to determine compliance with relevant drawings and/or manufacturers' specification

4.4

New components are inspected for compliance with manufacturers' specification and are prepared for assembly, in accordance with workplace procedures

4.5

Components are weighed, measured and recorded, in accordance with workplace procedures and site requirements

4.6

Components are reassembled and preliminary balance of equipment is obtained, maintained and adjusted by assembling components sequentially by appropriate weight, in accordance with workplace procedures

4.7

Plant and machinery is adjusted using appropriate techniques, in accordance with workplace procedures, manufacturers' specification and site tolerances

4.8

All fastenings are torqued, in accordance with workplace procedures and manufacturers' specifications

4.9

Components are levelled and aligned, using appropriate tools, in accordance with workplace procedures

5

Replace/install material crushers

5.1

Equipment is prepared for material crushers to be replaced, in accordance with workplace procedures

5.2

Material crushers are replaced, in accordance with workplace procedures and manufacturers' specification

5.3

Alterations or corrections are undertaken, in accordance with workplace procedures

5.4

Material crushers are levelled, aligned and coupled, in accordance with workplace procedures

5.5

All fastenings are torqued, in accordance with workplace procedures, manufacturers' specification and site requirements

5.6

Material crushers are given a test run and are monitored, as required, in accordance with workplace procedures and manufacturers' specification

6

Complete work

6.1

Work is completed and appropriate personnel are notified, in accordance with workplace procedures

6.2

Work area is cleared of waste, cleaned, restored and secured, in accordance with workplace procedures

6.3

Tools and equipment are cleaned, maintained and stored, in accordance with workplace procedures

6.4

Work completion details are finalised, in accordance with workplace procedures

Foundation skills essential to performance are explicit in the performance criteria of this unit of competency.

Range is restricted to essential operating conditions and any other variables essential to the work environment.

Non-essential conditions may be found in the Companion Volume Implementation Guide.

Electricity generation

Maintenance