Required skills

Look for evidence that confirms skills in

research

understanding and applying metallurgy principles

selecting NDT test appropriate to metal or alloy and manufacturing process

Required knowledge

Look for evidence that confirms knowledge of

principles of solidification and crystal structures in metal

classification of materials

structure of atoms

process of solidification

crystal structures

defects formed during solidification

modification of crystal structure

heat treatment processes

defects formed during heat treatment

meaning of equilibrium diagrams representative of a range of metals including aluminium iron steel and common nonferrous alloys

alloy systems

solid and liquid solubility

basic equilibrium diagrams

equilibrium diagrams for common alloys

principles of fusion welding in relation to NDT testing

defects in fusion welding

processing defects

grinding cracks

pickling cracks

heat treatment cracks

service defects

fatigue cracks

corrosion and stress corrosion cracks

principles of the formation of castings

defects in castings

principles of steel forging

defects in steel forging

principles of mechanical testing

mechanical testing

tensile testing

impact testing

hardness testing

fatigue testing

other tests

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 apply metallurgy principles to NDT test selection and interpretation 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 applying basic metallurgy principles as related to nondestructive testing techniques 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 supervisors 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

Principles and methods for fusion welding of metals and alloys

Defects in weldments

Defects in metal and alloy castings

Principles and methods used to produce steel forgings

Principles of mechanical testing