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Elements and Performance Criteria

1. Prepare to operate a recirculating aquaculture system
   • Receive and confirm instructions with supervisor on water treatment components' operational requirements
   • Select, fit and adjust personal protective equipment as required
   • Locate and carry out routine pre-operational checks of components of the recirculating aquaculture system according to workplace procedure
   • Detect faulty components and report to supervisor
   • Identify abnormal operating and environmental conditions within the culture or holding structures or systems, and report to supervisor
2. Operate and monitor a recirculating aquaculture system
   • Operate automatic or mechanised equipment according to workplace procedures
   • Measure critical flow rates and other water quality parameters, and record data according to workplace procedures
   • Adjust operating components to optimise conditions for the culture or holding species
   • Check and test backup components for operational capacity
   • Report abnormal or non-standard conditions, and other risks, to supervisor
3. Maintain and repair a recirculating aquaculture system
   • Confirm work plan or schedule, environmental and biosecurity regulations, risks and contingency plans with supervisor
   • Collect basic tools, equipment, including personal protective equipment, spare parts and repair materials and take to worksite
   • Make basic repairs to sub-standard equipment and calibrate equipment following safe work practices
   • Service components and replace or repair worn or damaged parts or components according to supervisor instructions
   • Return components and water supply and disposal systems to working order
   • Check system for serviceability and performance, and report problems to supervisor
4. Finalise operation, monitoring and maintenance activities
   • Clean work area and dispose of waste materials safely according to workplace procedures
   • Check and store tools and equipment, reporting any identified repair requirements to supervisor
   • Record relevant data and observations, and report any abnormal records to supervisor

Performance Evidence

An individual demonstrating competency must satisfy all of the elements and performance criteria in this unit.

There must be evidence that the individual has safely operated and maintained at least one recirculating aquaculture system on at least one occasion, including:

communicating with and reporting to supervisor about the operation and maintenance of water treatment components

fitting and adjusting personal protective equipment

carrying out the required maintenance and repairs to components

carrying out routine monitoring and checks of equipment, flow rates and water quality

completing accurate records on the operation and maintenance of water treatment components

cleaning work area and storing tools and equipment after maintenance and repair activities.

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Knowledge Evidence

An individual must be able to demonstrate the knowledge required to perform the tasks outlined in the elements and performance criteria of this unit. This includes knowledge of:

basic relationship of inputs (stock, feed, energy, water and labour) to outputs (wastes, product and water quality)

overview of complexity of system and interrelationship of components

environmental and biosecurity regulatory requirements

conditions likely to impact on water flow

health and safety relevant to operating and maintaining water treatment components

operation and maintenance of automatic or mechanised equipment

features of water quality and optimal and critical limits for various parameters and non-standard conditions.

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