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

A person who demonstrates competency in this unit must be able to finish work using wet, dry and vapour deposition methods. Competency in this unit cannot be claimed until all prerequisites have been satisfied.

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

Assessors must be satisfied that the candidate can competently and consistently perform all elements of the unit as specified by the criteria, including required knowledge, and be capable of applying the competency in new and different situations and contexts.

Context of and specific resources for assessment

This unit may be assessed on the job, off the job or a combination of both on and off the job. Where assessment occurs off the job, that is the candidate is not in productive work, then an appropriate simulation must be used where the range of conditions reflects realistic workplace situations. The competencies covered by this unit would be demonstrated by an individual working alone or as part of a team. The assessment environment should not disadvantage the candidate.

This unit could be assessed in conjunction with any other units addressing the safety, quality, communication, materials handling, recording and reporting associated with finishing work using wet, dry and vapour deposition methods or other units requiring the exercise of the skills and knowledge covered by this unit.

Method of assessment

Assessors should gather a range of evidence that is valid, sufficient, current and authentic. Evidence can be gathered through a variety of ways including direct observation, supervisor's reports, project work, samples and questioning. Questioning techniques should not require language, literacy and numeracy skills beyond those required in this unit of competency. The candidate must have access to all tools, equipment, materials and documentation required. The candidate must be permitted to refer to any relevant workplace procedures, product and manufacturing specifications, codes, standards, manuals and reference materials.

Guidance information for assessment

Required skills

Look for evidence that confirms skills in:

obtaining all relevant drawings, specifications and/or instructions in accordance with work place procedures

racking the components to be coated correctly in accordance with standard operating procedures

calculating the correct mixing ratios for given wet coatings accurately

where appropriate, mixing and thinning the given wet coatings

calculating the surface area to be coated correctly

where appropriate, estimating the quantities of wet coating materials correctly

setting up the appropriate coating equipment

applying the coating correctly using the appropriate technique

curing the coating correctly using the appropriate technique

maintaining the coating thickness and colour in accordance with specifications throughout the coating operation

checking the coating thickness and colour

reading, interpreting and following information on written job instructions, specifications, standard operating procedures, charts, lists, drawings and other applicable reference documents

planning and sequencing operations

checking and clarifying task-related information

checking for conformance to specifications

performing numerical operations, geometry and calculations/formulae within the scope of this unit

Required knowledge

Look for evidence that confirms knowledge of:

work to be undertaken

coating process to be used

coating specifications

appropriate type of racking for the coating process

reasons for selecting the chosen rack type

procedures for racking components to be coated

source of data on mixing ratios for wet coatings

mixing ratio for the given task(s)

function of thinners as applied to the application of wet coatings

procedures to be followed when mixing wet coatings

surface area to be coated

coverage rate of the coating material to be applied

procedures for estimating quantities of coating materials

types of equipment used for a variety of coating processes

appropriate coating equipment for the given task(s)

reasons for selecting the chosen equipment

operating procedures applicable to the selected coating equipment

a range of coating techniques

a range of curing techniques

appropriate coating and curing technique for the given task(s)

reasons for selecting the chosen coating and curing techniques

monitoring procedures to be followed

examples of coating defects

the causes of coating defects

where appropriate, procedures for rectifying coating defects

where appropriate, procedures for reporting coating defects

coating thickness and colour to be achieved

the means of checking coating thickness and colour

frequency at which checks are undertaken

hazards and control measures associated with finishing work using wet, dry and vapour deposition methods, including housekeeping

safe work practices and procedures

use of personal protective equipment

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.

Coating

Electrostatic powder coating, electrophoretic coating, industrial spray coating and lacquering, electroless (auto catalytic) nickel or copper plating, phosphating, chromating, galvanising, hot tinning, sputter deposition, vacuum evaporation, ion plating, paints, stains and other liquid finishes

Prepared

Visual inspection for contamination, masking out, racking, identification of correct materials to be used, ensuring cleanliness of work area and equipment, operational testing of equipment

Coating operation

Spray application, dip coating