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Elements and Performance Criteria

1. Plan and prepare for bacterial oxidation process
   • Access, interpret and apply bacterial oxidation documentation and ensure the work activity is compliant
   • Obtain, read, interpret, clarify and confirm work requirements
   • Coordinate and communicate with other personnel using approved communication method
   • Select and wear personal protective equipment appropriate for work activities
   • Select appropriate type of auxiliary equipment for work activities
   • Perform equipment pre-start checks to ensure equipment is ready for operation
   • Identify and address potential risks, hazards and environmental issues, and implement control measures
   • Obtain and interpret emergency procedures, and be prepared for fire/accident/emergency
2. Start-up equipment in sequence
   • Carry out start-up procedures and complete start-up checks according to plant configurations and system requirements
   • Confirm plant is operational
3. Operate and monitor equipment
   • Read and interpret data from equipment indicators to determine bacterial oxidation progress
   • Continuously inspect and monitor plant and identify bacterial oxidation process defects and potential problems
   • Assess sulphuric content of ore according to bacterial oxidation parameters
   • Make appropriate adjustments to oxidation process to optimise targets
   • Adjust equipment to approved operating parameters to optimise oxidation performance, maintain efficient oxidation and to meet product quality targets
   • Control feed to oxidation equipment
   • Add required nutrients and oxygen to approved operating parameters
   • Complete all required documentation clearly, concisely and on time
   • Pass on end of shift information verbally or in writing to oncoming shift
4. Shutdown in sequence and/or isolate equipment
   • Shutdown or isolate equipment based on process and safety requirements
   • Perform post shutdown or isolation checks
   • Return equipment to service
5. Conduct housekeeping activities
   • Clear work area and dispose of or recycle materials
   • Clean and maintain condition of equipment, ensure suitability for use, and address/report issues
   • Manage and/or report hazards, and maintain a safe working environment
   • Process records
6. Plan and prepare for bacterial oxidation process
   • Access, interpret and apply bacterial oxidation documentation and ensure the work activity is compliant
   • Obtain, read, interpret, clarify and confirm work requirements
   • Coordinate and communicate with other personnel using approved communication method
   • Select and wear personal protective equipment appropriate for work activities
   • Select appropriate type of auxiliary equipment for work activities
   • Perform equipment pre-start checks to ensure equipment is ready for operation
   • Identify and address potential risks, hazards and environmental issues, and implement control measures
   • Obtain and interpret emergency procedures, and be prepared for fire/accident/emergency
7. Start-up equipment in sequence
   • Carry out start-up procedures and complete start-up checks according to plant configurations and system requirements
   • Confirm plant is operational
8. Operate and monitor equipment
   • Read and interpret data from equipment indicators to determine bacterial oxidation progress
   • Continuously inspect and monitor plant and identify bacterial oxidation process defects and potential problems
   • Assess sulphuric content of ore according to bacterial oxidation parameters
   • Make appropriate adjustments to oxidation process to optimise targets
   • Adjust equipment to approved operating parameters to optimise oxidation performance, maintain efficient oxidation and to meet product quality targets
   • Control feed to oxidation equipment
   • Add required nutrients and oxygen to approved operating parameters
   • Complete all required documentation clearly, concisely and on time
   • Pass on end of shift information verbally or in writing to oncoming shift
9. Shutdown in sequence and/or isolate equipment
   • Shutdown or isolate equipment based on process and safety requirements
   • Perform post shutdown or isolation checks
   • Return equipment to service
10. Conduct housekeeping activities
    • Clear work area and dispose of or recycle materials
    • Clean and maintain condition of equipment, ensure suitability for use, and address/report issues
    • Manage and/or report hazards, and maintain a safe working environment
    • Process records

Performance Evidence

Evidence is required to be collected that demonstrates a candidate’s competency in this unit. Evidence must be relevant to the roles within this sector’s work operations and satisfy all of the requirements of the performance criteria of this unit and include evidence that the candidate:

locates and applies relevant legislation documentation, policies and procedures

implements the requirements, procedures and techniques for the safe, effective and efficient completion of bacterial oxidation including:

bacteria concentration

blockages and spillages

cooling water flows

densities

dissolved oxygen

feed rates

in stream analysis (ISA)

nutrient levels

on stream analysis (OSA)

overloads

pH

power draw

pressures

reagent flow

temperatures

works effectively with others to undertake and complete the bacterial oxidation in a way that meets all of the required outcomes including:

using a range of communications techniques and equipment to convey information to others

maintaining written and verbal reporting requirements and procedures

organising work activities to meet all task requirements

communicating clearly and concisely with others to receive and clarify work instructions

demonstrates completion of bacterial oxidation that safely, effectively and efficiently meets all of the required outcomes on more than one (1) occasion including:

coordinating bacterial oxidation activity with others

adjusting equipment and communicating effects upstream and downstream

controlling the feed to oxidation equipment

adding nutrients and oxygen

isolating and shutting down bacterial oxidation equipment in sequence and perform checks

performing minor maintenance

returning bacterial oxidation equipment to service

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Knowledge Evidence

The candidate must demonstrate knowledge of conducting bacterial oxidation through:

apply legislative, organisational and site requirements and procedures for conducting bacterial oxidation including:

WHS, site safety and emergency requirements and procedures

environmental procedures

hazardous goods procedures and consequences of spills and hazardous goods

isolation procedures

equipment safety requirements

operational monitoring procedures and checks

wet and dry working procedures

breakdown procedures

diagnosing faults, reporting defects and identifying repair requirements

interpreting reports

using lift (manual, cranes and loads)

accurately maintaining records

identifying and managing hazards and risks

using hand and power tools

bacteria inhibitors

bacterial oxidation plant (basic) and process

contaminants

depressant identification and activator principles

monitoring equipment processes, limitations and operating parameters

interpreting metallurgical and technical data

identifying nutrient types and how to use them

identifying types of ores and grades (basic)

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