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Evidence Guide: MEM08012B - Prepare surfaces by abrasive blasting (basic)

Student: __________________________________________________

Signature: _________________________________________________

Tips for gathering evidence to demonstrate your skills

The important thing to remember when gathering evidence is that the more evidence the better - that is, the more evidence you gather to demonstrate your skills, the more confident an assessor can be that you have learned the skills not just at one point in time, but are continuing to apply and develop those skills (as opposed to just learning for the test!). Furthermore, one piece of evidence that you collect will not usualy demonstrate all the required criteria for a unit of competency, whereas multiple overlapping pieces of evidence will usually do the trick!

From the Wiki University

 

MEM08012B - Prepare surfaces by abrasive blasting (basic)

What evidence can you provide to prove your understanding of each of the following citeria?

Determine job requirements

  1. Work requirements are determined from job sheet, instructions or other predetermined specifications in accordance with standard operating procedures.
  2. Appropriate abrasive blasting process, equipment and blasting media are identified to meet job specification.
  3. Work site is prepared for surface cleaning activities.
Work requirements are determined from job sheet, instructions or other predetermined specifications in accordance with standard operating procedures.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Appropriate abrasive blasting process, equipment and blasting media are identified to meet job specification.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Work site is prepared for surface cleaning activities.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Set up equipment

  1. Appropriate equipment and any required consumables are assembled, set up and prepared correctly and safely in accordance with manufactures' specifications and standard operating procedures.
  2. Correct rust inhibitor for use in wet abrasive blast methods is selected where required.
  3. Pre-operational checks are carried out on equipment and faults and are rectified or reported for further action.
Appropriate equipment and any required consumables are assembled, set up and prepared correctly and safely in accordance with manufactures' specifications and standard operating procedures.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Correct rust inhibitor for use in wet abrasive blast methods is selected where required.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Pre-operational checks are carried out on equipment and faults and are rectified or reported for further action.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Prepare surfaces using abrasive blasting

  1. Blasting equipment is operated in accordance with standard operating procedures.
  2. Emergency shut-down procedures can be undertaken.
  3. Work procedures are undertaken to appropriate environmental requirements.
  4. Abrasive media disposal is carried out in accordance with standard operating procedures.
  5. Blasting equipment is cleaned and disassembled and inspected in accordance with manufacturers' specifications and standard operating procedures.
  6. Equipment faults are recorded and reported in accordance with standard operating procedures.
Blasting equipment is operated in accordance with standard operating procedures.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Emergency shut-down procedures can be undertaken.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Work procedures are undertaken to appropriate environmental requirements.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Abrasive media disposal is carried out in accordance with standard operating procedures.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Blasting equipment is cleaned and disassembled and inspected in accordance with manufacturers' specifications and standard operating procedures.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Equipment faults are recorded and reported in accordance with standard operating procedures.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Inspect prepared surface

  1. Surface preparation is assessed for cleanliness and conformance with specifications.
  2. Faults or defects are rectified where required and inspection results are recorded and reported in accordance with standard operating procedures.
Surface preparation is assessed for cleanliness and conformance with specifications.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Faults or defects are rectified where required and inspection results are recorded and reported in accordance with standard operating procedures.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Assessed

Teacher: ___________________________________ Date: _________

Signature: ________________________________________________

Comments:

 

 

 

 

 

 

 

 

Instructions to Assessors

Evidence Guide

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 prepare surfaces by abrasive blasting (at a basic level). 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. Where assessment occurs off the job, i.e. the candidate is not in productive work, an appropriate simulation must be used where the range of conditions reflects realistic workplace situations. The competencies 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 preparing surfaces by abrasive blasting (basic) 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 should not require language, literacy and numeracy skills beyond those required in this unit. 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 and Knowledge

Required skills

Look for evidence that confirms skills in:

planning and sequencing operations

undertaking numerical operations within the scope of this unit

selecting blasting equipment and media

setting up equipment and consumables

selecting rust inhibitor

conducting pre-operational checks

preparing surfaces using abrasive blasting

disposing of abrasive media

maintaining blasting equipment

identifying, recording and reporting of faults

inspecting prepared surface

performing rectification work

checking for conformance to specifications

Required knowledge

Look for evidence that confirms knowledge of:

reason for selecting the chosen sequence of operations

blasting equipment and media required

equipment, consumables for various methods

importance of using an appropriate rust inhibitor

process for undertaking pre-operational checks

procedures or using abrasive blasting equipment

procedures for abrasive media disposal

procedures for maintaining and storing blasting equipment

recording/reporting procedures; faulty equipment

checking prepared surfaces

rectification techniques

safe work practices and procedures

hazards and control measures related to abrasive blasting

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.

Blasting processes

Surface preparation using propelled abrasives including water, air steam, grits and blasting mediums

Blasting media

Abrasives, shot, glass beads, sand, steel shot, garnet, and other mediums accepted by industry and all regulatory bodies

Rust inhibitor

A substance which, when added to a corrosive liquid in small amounts, reduces the rate of corrosion

Blasting equipment

Electric and diesel compressors, blast pots, blast rooms, centrifugal blast machines, water pressure washers to 35,000 kpa, air hoses and nozzles, and specified hand and power tools, etc.