Elements and Performance Criteria

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.
Principal refractories
Principal refractories includes:
silica
alumino silicates
dolomite
magnesite-chrome,
chrome-magnesite
chrome
insulation and insulating refractories
special refractories (eg graphite, silicon carbide)
monolithic refractories ie cement, plastics, ramming mixes and castables
pH

pH of slags to be identified as acidic, basic or neutral in regards to their interaction with refractories.
Modes of installation
Modes of installation include:
monolithic
fired shape structures
bricks
other (eg sprayed)

EVIDENCE GUIDE
The Evidence Guide provides advice on assessment and must be read in conjunction with the Performance Criteria, Required Skills and Knowledge, the Range Statement and the Assessment Guidelines for the Training Package.

Overview of assessment
A person who demonstrates competency in this unit must be able to recommend a refractory for application. Critical aspects for assessment and evidence are required to demonstrate competency in this unit.
The person will be able to select appropriate materials and installation methodologies for specified situations. Assessment may be by workplace project, case study or suitable alternative. The selection should be able to be justified on technical and economic grounds.
Critical aspects for assessment and evidence required to demonstrate competency in this unit
It is essential that competence is demonstrated in the ability to:
identify refractory requirements for particular metals, alloys, slags and processes
recommend refractories that are appropriate from both a technical and economic perspective
determine the mode of refractory failure and recommend a more appropriate solution
Relationship to other units
This unit may be assessed concurrently with other relevant units.
Assessment method and context
Assessment will need to occur in an organisation using refractory materials.
Assessors must be satisfied that the person can consistently perform the unit as a whole, as defined by the elements, performance criteria, skills and knowledge. A holistic approach should be taken to the assessment.
Assessors should gather sufficient, fair, valid, reliable, authentic and current evidence from a range of sources. Sources of evidence may include direct observation, reports from supervisors, peers and colleagues, project work, samples, organisation records and questioning. Assessment should not require language, literacy or numeracy skills beyond those required for the unit.
The assessee will have access to all techniques, procedures, information, resources and aids which would normally be available in the workplace.
The method of assessment should be discussed and agreed with the assessee prior to the commencement of
If evidence is provided from a complete reline, or an initial refractory lining, then one recommendation may provide sufficient evidence. Where evidence is from the ongoing maintenance of an existing refractory, then it will be needed from a range of activities to provide sufficient evidence.
Resource implications
This section should be read in conjunction with the range of variables for this unit of competency. Resources required include suitable access to an organisation using refractories that allows for appropriate and realistic simulation. A bank of case studies/scenarios and questions will also be required to the extent that they form part of the assessment method. Questioning may take place either in the workplace, or in an adjacent, quiet facility such as an office or lunchroom. No other special resources are required.