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Follow the links below to find material targeted to the unit's elements, performance criteria, required skills and knowledge

Elements and Performance Criteria

1. Plan and prepare for work
   • Determine work requirements from job specification and plans.
   • Select and check equipment and hypochlorite supplies to meet safety requirements of task and site.
   • Select, fit and use personal protective equipment.
   • Handle and store hypochlorite chemicals to maximise shelf life and reduce loss of available chlorine.
   • Conduct the percentage available chlorine test.
2. Monitor process performance
   • Monitor hypochlorite disinfection processes according to agreed schedule and procedures.
   • Collect samples and conduct process tests.
   • Make process adjustments as required to maintain effectiveness of hypochlorite disinfection.
3. Apply chemical dosing
   • Prepare and apply hypochlorite chemicals.
   • Control hypochlorite dosing to maintain required residual.
4. Complete documentation
   • Maintain information relating to hypochlorite supply and usage.
   • Collect and record process data.
   • Report observations outside defined parameters for further action.
5. Plan and prepare for work
   • Determine work requirements from job specification and plans.
   • Select and check equipment and hypochlorite supplies to meet safety requirements of task and site.
   • Select, fit and use personal protective equipment.
   • Handle and store hypochlorite chemicals to maximise shelf life and reduce loss of available chlorine.
   • Conduct the percentage available chlorine test.
6. Monitor process performance
   • Monitor hypochlorite disinfection processes according to agreed schedule and procedures.
   • Collect samples and conduct process tests.
   • Make process adjustments as required to maintain effectiveness of hypochlorite disinfection.
7. Apply chemical dosing
   • Prepare and apply hypochlorite chemicals.
   • Control hypochlorite dosing to maintain required residual.
8. Complete documentation
   • Maintain information relating to hypochlorite supply and usage.
   • Collect and record process data.
   • Report observations outside defined parameters for further action.

Range Statement

Processes include:	sodium hypochlorite solution sodium hypochlorite
Technologies include:	calcium hypochlorite granules calcium hypochlorite tablets
Dosing procedures include:	chlorinator shutdown, start up and isolation purging operations leak testing dosing pump checks

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Performance Evidence

Evidence required to demonstrate competence must satisfy all of the requirements of the elements and performance criteria. The candidate must be assessed in at least one type of process, in at least one type of technology and in at least one type of dosing procedure 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 policies, standard operating procedures and regulatory standards

performing work-related calculations

identifying and responding to process faults and control system faults

identifying hazards

performing hypochlorite tests and chlorine residual sampling and testing

interpreting safety data sheets (SDS)

monitoring, operating and reporting on hypochlorite disinfection systems

selecting and using appropriate tools and equipment, including personal protective equipment

collecting and reporting process data

preparing and applying hypochlorite dosing safely

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.

properties and chemistry of hypochlorite chemicals

effects of pH, time, temperature, UV exposure and impurities on hypochlorite breakdown

microbiological guidelines

reactions with water to produce hypochlorous acid/hypochlorite ion

impact of pH

chlorine demands, including:

ammonia

natural organic matter (NOM)

turbidity

iron, manganese and nitrite

disinfection by-products (DBP)

breakpoint

contact time

hypochlorite dosing system layout for sodium hypochlorite and/or calcium hypochlorite dosing systems

hazardous substances handling

risk factors and potential hazards associated with hypo chlorination

work-related hypochlorite calculations

hypochlorite dosing processes

automatic feed rate control systems

SDS

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