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 test, evacuate, charge and leak test refrigeration systems.
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OHS procedures including codes of practice for a given work area are obtained and understood Completed |
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Established OHS risk control measures and procedures in preparation for the work are followed Completed |
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Safety hazards which have not previously been identified are noted and established risk control measures are implemented Completed |
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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 |
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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 |
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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 |
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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 |
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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 test, evacuate, charge and leak test refrigeration systems.
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OHS risk control measures and procedures for carrying out the work are followed Completed |
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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 |
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Circuits/machines/plant are checked as being electrically isolated where necessary in strict accordance OHS requirements and procedures Completed |
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The systems refrigerant and lubricant are tested for contamination Completed |
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Refrigerants are removed from a system safely into suitably labelled containers in accordance with regulatory requirements and industry practices, using appropriate recovery/reclaim equipment Completed |
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Precautions are taken to prevent damage to components while pressure testing the system Completed |
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Pressure testing is conducted at a pressure compatible with the refrigerant to be used Completed |
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Leaks are located and rectified using testing methods appropriate to the system under test and in accordance with industry practices Completed |
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Systems are evacuated to the required level and cleaned 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 Completed |
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The system, vacuum pump and recovery/reclaim unit lubricants are checked and maintained in accordance with manufacturer requirements Completed |
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Systems are charged or retrofitted with the appropriate refrigerant in accordance with manufacturer requirements and industry practices. This includes recording refrigerant usage in an auditable recording system, e.g. logbook. Completed |
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Problematic situations that arise during the work are dealt with in an appropriate manner Completed |
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Systems 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 |
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Complete and report refrigerants recovery, pressure test, evacuate, charge and leak test 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 and lubricant is dealt with in accordance with legislative/regulatory requirements Completed |
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Completion of the work is documented and recorded, including refrigerant usage in an auditable logbook and an appropriate person or persons notified in accordance with established procedures Completed |
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