Elements and Performance Criteria

The range statement provides information about the context in which the unit of competency is carried out. The variables and scope cater for different work requirements, work practices and knowledge between States, Territories and the Commonwealth, and between organisations and workplaces. The range statement relates to the unit as a whole and provides a focus for assessment. Text in italics in the performance criteria is explained here.
The following variables may be present and may include, but are not limited to, the examples listed under the scope. All work is undertaken to relevant legislative requirements, where applicable
Variable
Scope
Specifications
Dimensions and tolerances, geometry and tolerances, surface finish
Holding devices
Vices, clamps, magnetic chucks, face plates, collets, 3/4 jaw chuck, etc.
Wheels
Shape, grit/bond composition
Balanced
Static and dynamic balancing
Grinding machine
Surface, cylindrical and centreless machines

The evidence guide specifies the evidence required to demonstrate achievement in the unit of competency as a whole. It must be read in conjunction with the unit descriptor, performance criteria, range statement and the assessment guidelines for the Metal and Engineering Training Package
Overview of assessment requirements
A person who demonstrates competency in this unit must be able to perform grinding operations on a range of machines. Competency in this unit cannot be claimed until all prerequisites have been satisfied.
Context of 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.
Interdependent assessment
This unit could be assessed in conjunction with any other units addressing the safety, quality, communication, materials handling, recording and reporting associated with performing grinding operations 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.
Consistency of performance
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.
Required skills
Look for evidence that confirms skills in:
reading and interpreting information on written job instructions, procedures, specifications, charts, lists, drawings and other applicable reference documents
checking and clarifying task related information
preparing an operational work plan
planning and sequencing operations
using precision measurement equipment within the scope of this unit
setting up work using tools, techniques and equipment
using coolant and dust extraction devices
selecting and preparing grinding wheels and accessories appropriate to the grinding task(s)
performing and monitoring internal/external cylindrical grinding process
clamping/mounting work pieces
checking for conformance to specifications
performing numerical operations and calculations within the scope of this unit
Required knowledge
Look for evidence that confirms knowledge of:
reasons for selecting the chosen sequence of operations
the application of a range of holding devices/accessories
reasons for selecting specific work holding devices, tools, techniques and equipment
coolant selection/function
standard grinding wheel shapes
the range of abrasive materials used in grinding wheels
factors impacting grinding wheel selection including grain size of abrasive particles; grade or strength of bond; and bond material
grinding wheel dressing tools and their application
internal/external cylindrical grinding process
principles of effective clamping
grinding operations/procedures
the function of any grinding accessories
tools, techniques and equipment for checking components for conformance to specifications
hazards and control measures associated with grinding operations, including housekeeping
use and application of personal protective equipment
safe work practices and procedures