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
What evidence can you provide to prove your understanding of each of the following citeria?
Prepare to recover refrigerants, pressure and leak test, evacuate and charge refrigeration appliance.
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OHS procedures for a given work area are identified, identified, obtained and understood Completed |
Evidence:
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Established OHS risk control measures and procedures are followed in preparation for the work. Completed |
Evidence:
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Safety hazards which have not previously been identified are noted and established risk control measures are implemented. Completed |
Evidence:
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The nature and location of the work is determined from documentation or appropriate person(s) to establish the scope of work to be undertaken. Completed |
Evidence:
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The work is appropriately sequenced in accordance with job schedule Completed |
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Appropriate personnel are consulted to ensure the work is coordinated effectively with others involved on the work site Completed |
Evidence:
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Refrigerants, lubricants and cleaning materials needed for the work are obtained in accordance with established procedures and checked against job requirements Completed |
Evidence:
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Tools, equipment and testing devices needed to carry out the work are obtained in accordance with established procedures and checked for correct operation and safety Completed |
Evidence:
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Preparatory work is checked to ensure no damage has occurred and complies with requirements Completed |
Evidence:
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Recover refrigerants, pressure and leak test, evacuate and charge refrigeration appliance.
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OHS risk control measures and procedures for carrying out the work are followed. Completed |
Evidence:
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Checks are carried out to ensure the system or component parts are isolated, when necessary, in strict accordance with OHS requirements and procedures Completed |
Evidence:
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Circuits/machines/plant are checked as being electrically isolated where necessary in strict accordance OHS requirements and procedures Completed |
Evidence:
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Refrigerants are removed from a appliance safely into suitably labelled containers in accordance with regulatory requirements and industry practices. Completed |
Evidence:
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Precautions are taken to prevent damage to components while pressure testing the appliance. Completed |
Evidence:
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Pressure testing is conducted using dry nitrogen at a pressure relative to the refrigerant to be used. Completed |
Evidence:
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Leaks are located and rectified using testing methods appropriate to the appliance under test and in accordance with industry practices. Completed |
Evidence:
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Appliances are evacuated to the required level and cleaned the appliance of all moisture and other containments in accordance with industry practices. Completed |
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A 'Drop test' is used to prove effectiveness of the evacuation in accordance with industry practice using an appropriate electronic vacuum gauge. Completed |
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Components lubricants are checked and maintained in accordance with manufacturer's requirements. Completed |
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Appliances are charged with the appropriate refrigerant in accordance with manufacturer's requirements and industry practices. Completed |
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Problematic situations that arise during the work are dealt with in an appropriate manner. Completed |
Evidence:
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Appliances are pressure and leak tested, evacuated and charged efficiently without waste of materials or damage to apparatus and the surrounding environment or services and using sustainable energy practices. Completed |
Evidence:
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Complete and report refrigerants recovery, pressure and leak test and evacuate and charge work
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OHS work completion risk control measures and procedures are followed. Completed |
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Work site and equipment is cleaned and made safe in accordance with established procedures. Completed |
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Contaminated refrigerant is dealt with in accordance with legislative/regulatory requirements. Completed |
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Completion of the work is documented and an appropriate person or persons notified in accordance with established procedures Completed |
Evidence:
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