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Elements and Performance Criteria

  1. Prepare for work
  2. Use operator interface
  3. Access control information
  4. Control process variations and monitor operations
  5. Facilitate planned and unplanned process start-ups and shutdowns
  6. Respond to alarms or out of specification conditions

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, noise, 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

Non-routine problems

Non-routine problems 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

Non-routine problems are unexpected problems, or variations of previous problems and include one or more of the following:

loss of power/utilities

variation in feed rate, quality or loss of feed

unstable control of pressure, temperature, level and/or flows

unstable/suboptimal operation

control equipment failure

process plant trips

change in atmospheric conditions (rain, temperature, wind and lightning)

emergency situations

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

Human interface devices

Human interface devices include one or more of the following:

keyboards

track ball/mouse

touch screen

monitor and/or

standalone controllers

Alarms or abnormal conditions

Alarms or other abnormal conditions include the following:

emergency, including emergency shut down

partial or complete controller failure

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 all other conditions experienced on the plant (i.e. from any condition to any condition experienced on the plant)

Operate

Operate is to monitor, adjust/change the plant item/unit/system to meet specifications, by the following:

using the process control system in the control room

This competency does not require operation other than through the control panel.

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


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 demonstrate the ability to:

identify and control hazards

use schematics and data to monitor plant and optimise performance

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

instrument failure/malfunction

electrical failure/malfunction

mechanical failure/malfunction

equipment design deficiencies

product parameters (temperature, flows, pressure and levels)

process control system malfunction

power/utility failures

communicate effectively with team, group, supervisors and other personnel

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

take appropriate action to ensure a timely return to full performance

select and apply planned and unplanned start-up shutdown procedures

identify and communicate information required by others

complete written records.


Knowledge Evidence

Evidence must be provided that demonstrates knowledge of:

organisation procedures

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

their possible causes

potential consequences

appropriate risk controls

the function and location of the process/production equipment

interactions between plant items/processes

product specifications and tolerances

systems’ operating parameters

impact of external factors (e.g. variations in weather and feed)

system integrity limits

process control philosophies and strategies

emergency shutdown procedures

specific plant process operations

process-specific science (physics, chemistry and biochemistry) to the level of being able to interpret the science and extract factors controlling the process and product and by-product production rate and quality (e.g. for chemistry interpret the equation for factors controlling rate and yield and also interfering reactions, such as salts and hydrates)

basic science of upstream and downstream processes

emergency shutdown procedures

process drawings, such as piping and instrumentation diagram (P&ID) and process flow diagram (PFD )

cause and effect

control system architecture

basis of control for the plant/s

types of instrumentation and control systems, including feed forward, feedback and open control

types of instrumentation and control system components and their role, including primary sensing devices, final control elements and transducers/transmitters

how control loops and their components, including PID control, set points, controlled variable, indicated variable operate to control the process, and their limitations

interaction between multiple control loops, including cascade control

impacts of changing controller settings and the limits within which changes can be made

effective communication techniques

uninterrupt power supplies (UPS) and its applications and use.