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 |