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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 plant item
   • Note any outstanding/incomplete work
   • Check operational status of heat exchanger
2. Operate heat exchangers in accordance with procedures
   • Identify the type of heat exchanger and duty
   • Adjust flow rates, temperatures and pressure as appropriate to type of heat exchanger and duty
   • Complete routine checks, logs and paperwork, taking action on unexpected readings and trends
3. Recognise and take action on abnormal situations in accordance with procedures
   • Monitor heat exchanger frequently and critically throughout shift using measured/indicated data and senses
   • Identify impacts of any changes upstream and downstream
   • Recognise situations which may require action
   • Resolve routine problems
   • Take actions on other abnormal situations to make safe and have the situation resolved
4. Isolate and de-isolate equipment
   • Complete any required pre-start checks
   • Start up/shut down/changeover heat exchanger according to the plant type and duty in liaison with other personnel
   • 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: dust or other atmospheric hazards 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, 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
Heat exchanger duties	Heat exchanger duties include a minimum of one of the following: heating cooling cryogenic reboilers condensers gas dryers gas coolers refrigeration (evaporators/condensers)
Routine problems	Routine problems must be resolved by applying known solutions. Routine problems are predictable and include one or more of the following: damage to heat exchanger due to overheating and/or under/over pressurising factors that affect heat exchanger efficiency (scale build-up, fouling, internal leakage, air lock, turbulence and corrosion) leakage or gasket problems recognising when maintenance is required 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.
Start up/shut down as required	Start up/shut down as required includes: 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
Resolve routine problems	Resolving routine problems includes one or more of the following: making adjustments carrying out minor maintenance identifying and reporting problems outside operator's scope of responsibility identifying and controlling hazards related to heat exchangers and their integral equipment, including pressure vessels
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
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

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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 and shut down heat exchangers

monitor and operate heat exchange equipment to meet specifications

recognise early warning signs of equipment/processes needing attention or with potential problems

determine the most likely cause of routine problems

take appropriate action to ensure a timely return to full performance

isolate and de-isolate equipment

identify hazards and apply hazard control procedures.

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Knowledge Evidence

Evidence must be provided that demonstrates knowledge of:

all items on a schematic of the heat exchanger system and the function of each

principles of operation of heat exchangers

correct methods of starting, operating and shutting down heat exchangers

physics and chemistry relevant to the process unit

process parameters and limits, including temperature, pressure, flow and pH

routine problems, faults and their resolution

relevant alarms and actions

plant process idiosyncrasies

causes of head loss and change in heat transfer coefficient/rates

corrective action appropriate to the problem cause

function and troubleshooting of major internal components, including tubes and baffles, and typical problems

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

their possible causes

potential consequences

appropriate risk controls.

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