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Elements and Performance Criteria

  1. Plan and prepare for lime production operation
  2. Operate crushed limestone feed systems
  3. Conduct lime kiln operations
  4. Monitor and control discharge of burnt lime to slaking plant storage
  5. Monitor and control milk of lime plant

Required Skills

Required skills

Specific skills are required to achieve the Performance Criteria of this unit particularly for its application in the various circumstances in which this unit may be used This includes the ability to carry out the following as required to process lime products

apply legislative organisation and site requirements and procedures for processing lime products

handle dangerous materials

read and interpret instrumentation

interpret instructions and reports

diagnose faults

lift manual cranes and loads

maintain records

apply safe work practices

use hand and power tools

work in confined spaces

Required knowledge

Specific knowledge is required to achieve the Performance Criteria of this unit particularly for its application in the various circumstances in which this unit may be used This includes knowledge of the following as required to process lime products

properties and composition of limestone

breakdown procedures

storage methods and capacities

safety considerations with hot limestone

dust extraction systems and plant

feed systems plant and equipment

kilncalcining processes plant and equipment

slaking processes plant and equipment

equipment limitations and operating parameters

equipment safety requirements

emergency procedures

environmental procedures

hazardous goods procedures and consequences of spills and hazardous goods

identifying repair requirements

isolation procedures

technical data basic

OHS procedures

operational procedures and checks

quality monitoring and control

Evidence Required

The evidence guide provides advice on assessment and must be read in conjunction with the performance criteria required skills and knowledge range statement and the Assessment Guidelines for the Training Package

Overview of assessment

Critical aspects for assessment and evidence required to demonstrate competency in this unit

The evidence required to demonstrate competency in this unit must be relevant to worksite operations and satisfy all of the requirements of the performance criteria required skills and knowledge and the range statement of this unit and include evidence of the following

knowledge of the requirements procedures and instructions for processing lime products

implementation of requirements procedures and techniques for the safe effective and efficient completion of lime product processing

working with others to undertake and complete the processing of lime products that meets all of the required outcomes

consistent timely completion of lime product processing that safely effectively and efficiently meets the required outcomes

Context of and specific resources for assessment

This unit must be assessed in the context of the work environment Where personal safety or environmental damage are limiting factors assessment may occur in a simulated environment provided it is realistic and sufficiently rigorous to cover all aspects of workplace performance including task skills task management skills contingency management skills and job role environment skills

Assessment of this competency requires typical resources normally used in a resources and infrastructure sector environment Selection and use of resources for particular worksites may differ due to the site circumstances

The assessment environment should not disadvantage the participant For example language literacy and numeracy demands of assessment should not be greater than those required on the job

Customisation of assessment and delivery environment to sensitively accommodate cultural diversity

Aboriginal people and other people from a non English speaking background may have second language issues

Where applicable physical resources should include equipment modified for people with disabilities Access must be provided to appropriate learning andor assessment support when required

Method of assessment

This unit may be assessed in a holistic way with other units of competency The assessment strategy for this unit must verify required knowledge and skill and practical application using more than one of the following assessment methods

written andor oral assessment of the candidates required knowledge

observed documented andor first hand testimonial evidence of the candidates

implementation of appropriate requirement procedures and techniques for the safe effective and efficient achievement of required outcomes

consistent achievement of required outcomes

first hand testimonial evidence of the candidates

working with others to undertake and complete the processing of lime products

Guidance information for assessment

Consult the SkillsDMC User Guide for further information on assessment including access and equity issues


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. Bold italicised wording, if used in the performance criteria, is detailed below. 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) may also be included.

Relevant compliance documentation may include:

legislative, organisational and site requirements and procedures

manufacturer's guidelines and specifications

Australian standards

Employment and workplace relations legislation

Equal Employment Opportunity and Disability Discrimination legislation

Shift changeover details may include:

shutdowns

clearances/permits

operating instructions for the shift

safety issues

environmental issues

Routine safety checks may include:

trip hazards

loss control inspections

lighting

signage

emergency safety showers/lights

asbestos

Potential risks and hazards may include:

heat

noise

burnt lime

conveyors

steam

stock pile

fuel

mobile equipment

Pre-start checks may include:

detection of conditions that are unusual

personnel availability

job requirements for the shift

walk through plant

interlocks

alarms

Equipment may include:

vibratory feeders

conveyors

grizzlies

holding bin

skip hoist

chutes and flaps

kiln

crusher

bucket elevator

silos

bag house (de-dust and dust collection)

rake classifier

tanks, pumps, valves and scale traps

Environmental issues may include:

drainage

dust (dump)

emissions

flora and fauna

hazardous chemicals

noise

recycling

run-off

spills

waste management and disposal

water quality

Feed systems may include:

conveyors

tramp metal magnet

undersize grizzly

rill tower and stockpile

distributed Control Systems (DCS)

Feeder plant and equipment may include:

storage/holding bin

weigh hopper

skip hoist

service hopper and control flaps

DCS

Alarms and indicators may include:

flow

current (e.g. agitators)

density

levels

restrictions

air flows

pressure

speed (e.g. pumps)

unusual noises

vibrations

power

temperature

radiation levels

Safety procedures may include:

feeder plant:

electrical checks/inspections on conveyors and all associated equipment

mechanical checks/inspections on conveyors and all associated equipment

checks/inspections control systems

manual handling

reporting incident/accident/near misses

commission/de-commission the system

emergency response

Hot kilns:

electrical checks/inspections on kilns and all associated equipment

mechanical checks/inspections on kilns and all associated equipment

control system checks/inspections

commission/de-commission the system

emergency response

reporting incidents/accidents near misses

Burnt limestone:

personal protective equipment.

housekeeping

routine checks/inspections

Kiln processing systems and media may include:

combustion air

cooling air

hydraulic systems

cooling oil

fuel

DCS and other control systems as may be used in refineries

Product quality may be compromised by:

over burnt limestone

under burnt limestone

milk of lime outside of parameters

mechanical equipment breakdown

electrical equipment breakdown

control system fault

Adjustment or replacement of burner components may include:

burner tips

burner lances

steam purge

fuel supply

filters

gauges (e.g. flow, pressure)

Dust extraction plant may include:

de-dust system

bag house

filter bags

pulse air

electronic and mechanical controls