Assessment

You have now completed the knowledge content and activities for PMLTEST401A Perform Non-Instrumental Tests/Procedures. You may undertake the assessment if you are ready or review the material in this unit again.

To be recognised as competent in this unit you must be assessed in both the knowledge content and the workplace skills. The assessment is in two parts, part one is a scenario that asks you to apply the knowledge you have acquired in the unit and part two is a practical assessment.

Part 1. Knowledge Assessment

The exercises in the following activity are designed to test your understanding of the previous five tasks. They are based on the information contained in this unit of competency.

Test your understanding of non-instrumental tests/procedures by answering the following questions. Send the completed assessment to your tutor.

Question 1
What are non-instrumental tests/procedures? In your answer include an example of a non-instrumental test or procedure that is not given in the preceding five tasks.

Question 2
What sort of safety precautions need to be taken when performing the following?

  • Handling samples
  • Using laboratory equipment
  • Performing a task for the first time.

Question 3
When a 155.1 g check sample was run through a sieve stack, the following results were obtained:

1.18 mm sieve 3.1 g retained
600 µm sieve 33.9 g retained
425 µm sieve 109.6 g retained
< 425 µm 7.7 g retained.

Using these results, calculate the particle size distribution and express each fraction to the nearest percentage.

Question 4
Calculate the total losses of check sample that occurred during the particle size distribution test described in Question 3. Express the answer to the nearest 0.120.

Question 5
Compare the results you calculated in Question 3 with the actual particle size distribution for the check sample that is known to be:

1.18 mm sieve

8%

600 µm sieve

16%

425 µm sieve

71%

< 425 µm

5%

If the results from the particle size distribution test described in Question 3 were inconsistent with the actual particle size distribution of the check sample, describe how this outcome may have occurred.

Question 6
Once testing of a sample is complete, what should the laboratory technician do with the results? Who should be advised of the results, and how should they be advised of the results?

Question 7
Why was the sand coned and quartered in Task 3? Include a description of why this procedure is important.

Send this information to your tutor.

Part 2. Practical Assessment

Practical assessment requires you to demonstrate the competency on-the-job (or in a simulated laboratory).

The assessment will consist of:

  • a demonstration of the competency in an on-the-job situation or a simulation
  • oral questioning about such things as laboratory specific knowledge of processes, troubleshooting and
  • questioning related to specific safety or other factors that may be peculiar to the learner's work environment
  • any relevant workplace documents that support the assessment.


    If you are ready to undertake the practical assessment send a message to your tutor using the mail facility.

    Use the following link to obtain a checklist to be used by your assessor.

Checklist: PMLTEST401A Perform Non-Instrumental Tests/Procedures
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