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Elements and Performance Criteria

  1. Prepare the firing equipment
  2. Load kiln
  3. Monitor kiln operation
  4. Rectify routine problems
  5. Control hazards

Required Skills

Required skills

Required skills include

recognising conditions which will lead to out of specification operation

implementing enterprise procedures within time constraints and in a manner relevant to the correct use of the equipment

conveying information relevant to the operation clearly and effectively

maintaining appropriate levels of quality assurance

reading and numeracy to interpret workplace documents and technical information

Required knowledge

Required knowledge includes

stages and critical transitions during the firing process

kiln temperature profile and deviations allowed

importance of stacking patterns

consequences of variations in the firing process

underlying causes of faults such as precipitated by

firingtemperature profile

drying

materials

stacking or distribution of product in kiln

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

The unit will be assessed in as holistic a manner as is practical and may be integrated with the assessment of other relevant units of competency

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

Assessment for this unit of competency will be on an operating plant

It is essential that the equipment be understood and that the importance of critical material properties settings and readings is known Competence must be demonstrated in the ability to recognise and analyse potential situations requiring action and then in implementing appropriate corrective action

Consistent performance should be demonstrated In particular look to see that

kiln or kiln car is loaded to requirements

kiln firing is to requirements

temperature risefall rates are to specification

Competence must be demonstrated in the operation of all ancillary equipment to the level required for this unit of competency

Context of and specific resources for assessment

Assessment will require access to an operating plant over an extended period of time or a suitable method of gathering evidence of operating ability over a range of situations

Assessment will occur over a range of situations which will include disruptions to normal smooth operation

Simulation or case studiesscenarios may be required to allow for timely assessment of parts of this unit of competency Simulation should be based on the actual plant and will include walkthroughs of the relevant competency components A bank of scenarioscase studieswhat ifs and questions will be required to probe the reasoning behind observable actions

Method of assessment

In all plants it may be appropriate to assess this unit concurrently with relevant teamwork and communication units

Individual enterprises may choose to add prerequisites and corequisites relevant to their processes

Guidance information for assessment

Assessment processes and techniques must be culturally appropriate and appropriate to the language and literacy capacity of the candidate and the work being performed


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.

Procedures

All operations are performed in accordance with standard procedures and work instructions

Clay and ceramic products

Clay and ceramic products may include:

bricks

tiles and pipes

ceramic products

crockery

sanitary ware

insulators or thermal ceramics

Equipment and unit operations

This unit includes all such items of equipment and unit operations which form part of the kiln system. These may include:

kilns: batch, tunnel, top-hat, shuttle and roller hearth

kilns: oil, gas, electric, coal and wood fired

optical and thermocouple pyrometers

kiln cars, racking or other kiln furniture

PLCs, control panels, control computers

Typical problems

Typical problems may include:

ensuring moisture content of product prior to firing is within specification

furnace temperature profile variations

distribution of product in kiln or on kiln car

correct transition through quartz inversion, as appropriate

distortion of refractories or mechanical failures

Occupational health and safety (OHS)

The identification and control of hazards and the application of OHS are to be in accordance with current, applicable legislation and regulations, and company procedures