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?
Classify ore samples and select fluxing method
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Review client request to identify sample/analysis requirements, preparation methods and equipment involved Completed |
Evidence:
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Inspect samples, compare with specifications, record and report any discrepancies Completed |
Evidence:
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Conduct visual and simple chemical tests to identify the type of sample and sulphide concentrations Completed |
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Review client sample/analysis history and identify possible chemical interferences Completed |
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Decide whether non-standard fluxing is required Completed |
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Select sample weight and flux to optimise precious metal recovery and purity Completed |
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Prepare for precious metal recovery
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Identify hazards and enterprise controls associated with the sample, preparation methods, reagents and equipment Completed |
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Examine the recommended preparation method to identify the critical steps that will affect the quality of analytical results Completed |
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Plan parallel work sequences to optimise the throughput of multiple sets of samples Completed |
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Assemble all required equipments, materials, reagents and check they are fit for purpose Completed |
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Recover precious metals from ore sample
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Weigh required amounts of sample and flux components to achieve an acceptable button and fluid slag Completed |
Evidence:
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Select the type and size of pot to suit sample method and client requirements Completed |
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Mix charge to ensure homogeneity and optimal collection of precious metal Completed |
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Set and monitor furnace temperature/time to ensure complete fusion Completed |
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Separate slag and button with minimal loss of lead collector Completed |
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Maintain sequencing in order to track samples, buttons and prills throughout the recovery process Completed |
Evidence:
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Separate lead collector from the required precious metal and check for contamination, losses and evidence of other precious metals Completed |
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Minimise personal exposure to hazards and the release of collectors to the work environment Completed |
Evidence:
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Collate laboratory documentation and the prepared sample and present for analysis Completed |
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Troubleshoot and correct failed recovery
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Monitor all stages of recovery for indicators of potential loss Completed |
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Recognise undesirable recovery conditions and decide whether the process requires correction Completed |
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Choose an appropriate corrective action and restart the process Completed |
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Document any adjustments made to standard methods and re-sequencing of samples Completed |
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Seek advice when problems are beyond scope of responsibility or knowledge Completed |
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Perform daily maintenance of assay equipment
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Segregate and dispose of wastes in accordance with enterprise requirements Completed |
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Grade and inspect pots using established criteria prior to storage for re-use Completed |
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Inspect furnaces for cracks, unserviceable components and remove slag Completed |
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Inspect and clean extractive systems Completed |
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Report defective equipment and consumable requirements to appropriate personnel Completed |
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