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Elements and Performance Criteria

1. Prepare to work with liquefied chlorine gas
   • Check work procedures and instructions for compliance.
   • Check hazard signage for compliance.
   • Select and check tools and equipment.
   • Check first aid provisions for potential liquefied chlorine gas exposure hazards.
   • Select, fit and use personal protective equipment.
2. Perform liquefied chlorine gas container changeover procedures
   • Obtain and handle liquefied chlorine gas containers from the correct storage area.
   • Conduct connection and disconnection procedures for chlorine gas draw or chlorine liquid draw systems.
   • Move depleted containers within storage area.
   • Check and store tools and equipment.
3. Monitor process performance
   • Conduct and perform process tests and compare performance to process operational requirements.
   • Set critical control point dosing points according to organisation procedures.
   • Maintain and monitor relevant WHS requirements.
   • Make process adjustments as required to maintain effectiveness of the disinfection system.
4. Complete documentation
   • Collect and record process data.
   • Report observations outside defined parameters for further action.
5. Prepare to work with liquefied chlorine gas
   • Check work procedures and instructions for compliance.
   • Check hazard signage for compliance.
   • Select and check tools and equipment.
   • Check first aid provisions for potential liquefied chlorine gas exposure hazards.
   • Select, fit and use personal protective equipment.
6. Perform liquefied chlorine gas container changeover procedures
   • Obtain and handle liquefied chlorine gas containers from the correct storage area.
   • Conduct connection and disconnection procedures for chlorine gas draw or chlorine liquid draw systems.
   • Move depleted containers within storage area.
   • Check and store tools and equipment.
7. Monitor process performance
   • Conduct and perform process tests and compare performance to process operational requirements.
   • Set critical control point dosing points according to organisation procedures.
   • Maintain and monitor relevant WHS requirements.
   • Make process adjustments as required to maintain effectiveness of the disinfection system.
8. Complete documentation
   • Collect and record process data.
   • Report observations outside defined parameters for further action.

Range Statement

Handling procedures include:	transport and handling of liquefied chlorine gas containers container disconnection and connection procedures for chlorine gas or chlorine liquid draw systems storage of liquefied chlorine gas cylinders or drums
Types of chlorine draw include:	liquid draw gas draw
Types of containers include:	cylinders drums tanker deliveries

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Performance Evidence

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.

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Knowledge Evidence

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

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