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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 gas odourising plant
   • Note any outstanding/incomplete work
   • Check operational status of gas odourising plant
2. Start up and shut down gas odourising plant in accordance with procedures
   • Complete pre-start checks
   • Start up odourant injection plant
   • Shut down odourant injection plant
   • Respond to plant trip/emergency shutdown
3. Control odourisation in accordance with legislative/ regulatory requirements
   • Maintain specified odourant concentration in the gas
   • Store odourant
   • Handle or transport odourant
   • Handle waste products in accordance with legislative requirements
   • Complete reports, records and logs
   • Monitor odourisation and take action in accordance with procedures
4. Isolate and de-isolate plant
   • Isolate plant.
   • Make safe for required work
   • Check plant is ready to be returned to service
   • De-isolate and prepare plant 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.
Procedures	All operations must be performed in accordance with relevant procedures. Procedures are written, verbal, visual, computer-based or in some other form, and 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
Hazards	Hazards include one or more of the following: smoke, darkness and heat 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) limited head spaces or overhangs working at heights, in restricted or confined spaces 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	Routine problems must be resolved by applying known solutions. Routine problems are predictable and include one or more of the following: suction vapour locks diaphragm ruptures low suction pressure flow regulator failures gas leaks and fires equipment failures Known solutions are drawn from one or more of the following: procedures training remembered experience Non-routine problems must be reported according to according to relevant procedures.
Action	Action in accordance with procedures includes the following: determining problems needing action determining possible fault causes rectifying problem using appropriate solution within area of responsibility following through items initiated until final resolution has occurred reporting problems outside area of responsibility to designated person
Operational equipment	Operational equipment includes the following: emergency response kit including absorption material neutralising agents storage level indicator (magnetic detector) personal protective equipment (PPE) molecular sieve for venting pumps and flow control equipment
Operate	Operate is to monitor, adjust/change the plant item/unit/system to meet specifications, by one or more of the following: manually in the plant using local controller in the plant using the process control system in the control room
Start up/shut down as required	Start up/shut down as required 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

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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:

start up, monitor and adjust injection pumps to maintain odour to specifications

store, handle, transfer and dispose of odourant waste in accordance with regulatory requirements and safety data sheets (SDS)

apply shutdown and emergency procedures

recognise and take specified action on early warning signs of equipment/processes needing attention or with potential problems

isolate and de-isolate equipment

identify hazards and apply hazard control procedures

distinguish between causes of problems/alarm/fault indications, including:

process gas variations

instrument failure/wrong readings

electrical failures

mechanical failures

operational problems.

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Knowledge Evidence

Evidence must be provided that demonstrates knowledge of:

gas odourisation systems and their component functions

principles of operation of plant/equipment

physics and chemistry relevant to the process unit and the materials processed

nature/condition of materials entering and leaving each stage of the process

process parameters and limits, e.g. temperature, pressure and flow

routine problems, faults, their symptoms and resolution

correct methods of starting, stopping, operating and controlling process

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

their possible causes

potential consequences

appropriate risk controls.

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