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Elements and Performance Criteria

1. Prepare for work
   • Receive and give shift handover
   • Identify work requirements
   • Identify and control hazards
   • Coordinate with appropriate personnel
   • Check for recent work undertaken on liquid extraction system
   • Note any outstanding/incomplete work
   • Check operational status of liquid extraction system
2. Operate liquid extraction system
   • Describe the type of liquid extraction system, the component plant items and their duties
   • Complete routine checks, logs and paperwork taking action on unexpected readings
   • Adjust liquid extraction system and its component plant items to their type and duty to maximise performance
3. Diagnose and take action on abnormal situations in accordance with procedures
   • Monitor liquid extraction system and its component plant items frequently and critically throughout shift using measured/indicated data and senses
   • Describe impacts of any changes upstream and downstream
   • Recognise actual and developing situations which may require action
   • Apply operational knowledge to resolve problems
   • Take other actions on abnormal situations which cannot be resolved during the shift to ensure safety and the resolution of the situation
   • Follow through items initiated until final resolution has occurred
4. Isolate and de-isolate liquid extraction system and its component plant items
   • Complete any required pre-start checks
   • Start up/shut down liquid extraction system according to the liquid extraction system type and duty in liaison with other personnel
   • Start up/shut down/changeover component plant items within unit according to their type and duty in liaison with other personnel
   • Isolate entire liquid extraction system and/or any component plant item.
   • Make safe for required work
   • Check liquid extraction system/plant item is ready to be returned to service
   • De-isolate and prepare liquid extraction system/plant item for return to service

Range Statement

This field allows for different work environments and conditions that may affect performance. Essential operating conditions that may be present (depending on the work situation, needs of the candidate, accessibility of the item, and local industry and regional contexts) are included.
Regulatory framework	The latest version of all legislation, regulations, industry codes of practice and Australian/international standards, or the version specified by the local regulatory authority, must be used, and include one or more of the following: legislative requirements, including work health and safety (WHS) industry codes of practice and guidelines environmental regulations and guidelines Australian and other standards licence and certification requirements All operations to which this unit applies are subject to stringent health, safety and environment (HSE) requirements, which may be imposed through state/territory or federal legislation, and these must not be compromised at any time. Where there is an apparent conflict between performance criteria and HSE requirements, the HSE requirements take precedence.
Hazards	Hazards include one or more of the following: electricity gas gases and liquids under pressure structural hazards structural collapse equipment failures industrial (machinery, equipment and product) equipment or product mass noise, rotational equipment or vibration plant services (steam, condensate and cooling water) working at heights, in restricted or confined spaces, or in environments subjected to heat, dusts or vapours flammability and explosivity hazardous products and materials unauthorised personnel sharp edges, protrusions or obstructions slippery surfaces, spills or leaks extreme weather other hazards that might arise
Routine problems	Situations requiring action include both routine and non-routine problems. Routine problems include one or more of the following: design temperature constraints CO2 freezing flooding variation in feed quality/rate
Non-routine problems	Non-routine problems are unexpected problems, or variations of previous problems and must be resolved by applying operational knowledge to develop new solutions, either individually or in collaboration with relevant experts, to: determine problems needing action determine possible fault causes develop solutions to problems which do not have a known solution follow through items initiated until final resolution has occurred report problems outside area of responsibility to designated person Operational knowledge includes one or more of the following: procedures training technical information, such as journals and engineering specifications remembered experience relevant knowledge obtained from appropriate people
Start up/shut down	Start up/shut down includes the following: start up and shut down to/from normal operating conditions start up and shut down to/from isolated, cold or empty start up and shut down to/from other conditions/situations experienced on the plant
Procedures	All operations must be performed in accordance with relevant procedures. Procedures are written, verbal, visual, computer-based or in some other form, include one or more of the following: emergency procedures work instructions standard operating procedures (SOPs) safe work method statements (SWMS) formulas/recipes batch sheets temporary instructions any similar instructions provided for the smooth running of the plant.
Operate	Operate is to monitor, adjust/make change to the production unit and/or its component items to meet specifications, by one or both of the following: manually in the plant using local controller in the plant
Product	Product includes anything produced by a process step and so includes: intermediate products, such as the product from one process step, which then becomes the feed for another

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Performance Evidence

Evidence required to demonstrate competence in this unit must be relevant to and satisfy the requirements of the elements and performance criteria and include the ability to:

use data and own senses to monitor plant and ensure steady operating conditions and maximise performance

perform pre-start checks, start-up/shutdown procedures, and isolations and de-isolations

identify early warning signs of equipment/processes needing attention or with potential problems and apply solutions

identify hazards and risks and apply risk control procedures.

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Knowledge Evidence

Evidence must be provided that demonstrates knowledge of:

all items on a schematic of the system and functions of each

principles of operation of liquid extractors, stabilisation principles, the basis of cryogenic operations

process-specific science (physics and chemistry) to the level of being able to interpret the science and extract factors controlling the process and product and production rate and quality

systems’ operating parameters, integrity limits, product specifications and tolerances, temperature, pressure and flow

process control philosophies and strategies

correct methods of starting, stopping, operating and controlling system components

isolation procedures

emergency shutdown procedures

function and troubleshooting of major components and their problems and solutions

hierarchy of control

hazards that may arise in the job/work environment, and:

their possible causes

potential consequences

appropriate risk controls.

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