List the assessment methods to be used and the context and resources required for assessment. Copy and paste the relevant sections from the evidence guide below and then re-write these in plain English.
ELEMENTS | PERFORMANCE CRITERIA |
Elements describe the essential outcomes | Performance criteria describe the performance needed to demonstrate achievement of the element. Where bold italicised text is used, further information is detailed in the range of conditions section. |
1. Prepare to work with liquefied chlorine gas | 1.1 Check work procedures and instructions for compliance. 1.2 Check hazard signage for compliance. 1.3 Select and check tools and equipment. 1.4 Check first aid provisions for potential liquefied chlorine gas exposure hazards. 1.5 Select, fit and use personal protective equipment. |
2. Perform liquefied chlorine gas container changeover procedures | 2.1 Obtain and handle liquefied chlorine gas containers from the correct storage area. 2.2 Conduct connection and disconnection procedures for chlorine gas draw or chlorine liquid draw systems. 2.3 Move depleted containers within storage area. 2.4 Check and store tools and equipment. |
3. Monitor process performance | 3.1 Conduct and perform process tests and compare performance to process operational requirements. 3.2 Set critical control point dosing points according to organisation procedures. 3.3 Maintain and monitor relevant WHS requirements. 3.4 Make process adjustments as required to maintain effectiveness of the disinfection system. |
4. Complete documentation | 4.1 Collect and record process data. 4.2 Report observations outside defined parameters for further action. |
Evidence required to demonstrate competence must satisfy all of the requirements of the elements and performance criteria. To be deemed competent the candidate must be assessed in at least one type of handling procedure, using at least one type of chlorine draw and at least one type of container listed in the Range of Conditions. If not otherwise specified the candidate must demonstrate evidence of performance of the following on at least one occasion.
applying correct liquefied chlorine gas container procedures for transport, handling and storage
operating safely and following procedure when disconnecting and reconnecting gas draw or liquid draw chlorinator systems
interpreting safety data sheets (SDS)
selecting, fitting and using PPE, including air supplied self-contained breathing apparatus
implementing relevant Australian standards, SDS requirements and other legislative and organisational requirements
following emergency protocols and procedures relating to liquefied chlorine gas hazards
collecting samples and conducting tests, including at least one of:
free chlorine
total chlorine
pH
turbidity
temperature
performing process calculations, including at least one of:
feed rate
dosage
Ct.
Evidence required to demonstrate competence must satisfy all of the requirements of the elements and performance criteria. If not otherwise specified the depth of knowledge demonstrated must be appropriate to the job context of the candidate.
personal protective equipment and its application
self-contained breathing apparatus
emergency equipment and its application
properties of liquefied chlorine gas
basic function and components of gas draw or liquid draw chlorinator systems
hazards of liquefied chlorine gas handling
safety data sheet (SDS)
procedures for liquefied chlorine gas container for transport, handling and storage
maintenance procedures for personal protective equipment
AS/NZS 2927 The storage and handling of liquefied chlorine gas
relevant federal and state or territory legislation and regulations
codes of practice, associated standards and guidance material
documented organisational policies, manuals and induction programs
microbiological guidelines
reactions with water to produce hypochlorous/hypochlorite ion
impact of pH on above
chlorine demands
disinfection by-products
breakpoint
contact time
Ct.
chlorine residuals
Competency should be assessed in an actual workplace or in a simulated environment, with access to equipment and infrastructure appropriate to the outcome. Competency should be demonstrated over time to ensure the candidate is assessed across a variety of situations.
Some components of this unit require assessment in a workplace environment therefore the unit is not suitable for fully external or electronic based assessment.
Assessors must satisfy the NVR/AQTF mandatory competency requirements for assessors.