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Evidence Guide: PMAOPS324A - Operate a gas turbine

Student: __________________________________________________

Signature: _________________________________________________

Tips for gathering evidence to demonstrate your skills

The important thing to remember when gathering evidence is that the more evidence the better - that is, the more evidence you gather to demonstrate your skills, the more confident an assessor can be that you have learned the skills not just at one point in time, but are continuing to apply and develop those skills (as opposed to just learning for the test!). Furthermore, one piece of evidence that you collect will not usualy demonstrate all the required criteria for a unit of competency, whereas multiple overlapping pieces of evidence will usually do the trick!

From the Wiki University

 

PMAOPS324A - Operate a gas turbine

What evidence can you provide to prove your understanding of each of the following citeria?

Prepare equipment for operation.

  1. Check that the turbine is not subject to maintenance or that other permitted activities are not taking place near the equipment
  2. Check the control panel to ensure that all indications support the safe starting of the turbine
  3. Conduct required safety checks and pre-starts to determine or verify the operational condition of the equipment.
Check that the turbine is not subject to maintenance or that other permitted activities are not taking place near the equipment

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Check the control panel to ensure that all indications support the safe starting of the turbine

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Conduct required safety checks and pre-starts to determine or verify the operational condition of the equipment.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Start the gas turbine.

  1. Commission turbine protection devices prior to the start-up of equipment
  2. Achieve operational flows and temperatures of ancillary equipment before bringing the system on line for use
  3. Start the gas turbine according to procedures.
Commission turbine protection devices prior to the start-up of equipment

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Achieve operational flows and temperatures of ancillary equipment before bringing the system on line for use

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Start the gas turbine according to procedures.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Monitor and assess gas turbine systems.

  1. Check operation and function of the gas turbine by applying principles of operation and procedures
  2. Monitor and correct fuel and energy systems and flows to ensure that the system provides the proper operational mixture for turbine use
  3. Ensure adequate supplies of clean air at the stated rate or temperature are delivered to the turbine to allow for successful operation to be achieved
  4. Check exhaust gas and turbine operating temperatures to ensure correct temperature gradients in the turbine
  5. Monitor lubrication systems to verify that operational parts are functioning efficiently and effectively, and to ensure that all moving parts are operating in a friction free and clean environment
  6. Monitor and adjust cooling systems to allow for the most efficient operating temperature to be maintained throughout all operating conditions
  7. Monitor governing systems to allow correct operational speeds of equipment to be maintained and regulated.
Check operation and function of the gas turbine by applying principles of operation and procedures

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Monitor and correct fuel and energy systems and flows to ensure that the system provides the proper operational mixture for turbine use

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Ensure adequate supplies of clean air at the stated rate or temperature are delivered to the turbine to allow for successful operation to be achieved

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Check exhaust gas and turbine operating temperatures to ensure correct temperature gradients in the turbine

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Monitor lubrication systems to verify that operational parts are functioning efficiently and effectively, and to ensure that all moving parts are operating in a friction free and clean environment

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Monitor and adjust cooling systems to allow for the most efficient operating temperature to be maintained throughout all operating conditions

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Monitor governing systems to allow correct operational speeds of equipment to be maintained and regulated.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Conduct operational maintenance.

  1. Conduct routine inspections and checks to ensure normal or stated turbine operation is maintained
  2. Identify equipment faults through observation of the operational equipment and periodic sampling and testing
  3. Determine action and communicate maintenance requirements to appropriate personnel
  4. Record operational data to provide a historical record of the operating condition of equipment.
Conduct routine inspections and checks to ensure normal or stated turbine operation is maintained

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Identify equipment faults through observation of the operational equipment and periodic sampling and testing

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Determine action and communicate maintenance requirements to appropriate personnel

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Record operational data to provide a historical record of the operating condition of equipment.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Prepare equipment for maintenance.

  1. Shut down gas turbine in line with procedures
  2. Isolate turbine for maintenance in accordance with procedures
Shut down gas turbine in line with procedures

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Isolate turbine for maintenance in accordance with procedures

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Control hazards.

  1. Identify hazards in the work area
  2. Assess the risks arising from those hazards
  3. Implement measures to control those risks in line with procedures and duty of care.
Identify hazards in the work area

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Assess the risks arising from those hazards

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Implement measures to control those risks in line with procedures and duty of care.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Respond to gas turbine problems.

  1. Monitor plant frequently and critically throughout shift using measured/indicated data and senses (sight, hearing, etc) as appropriate
  2. Recognise turbine operational problems
  3. Analyse cause of operational problems within scope of skill level
  4. Take timely and appropriate action to solve operational problems.
Monitor plant frequently and critically throughout shift using measured/indicated data and senses (sight, hearing, etc) as appropriate

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Recognise turbine operational problems

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Analyse cause of operational problems within scope of skill level

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Take timely and appropriate action to solve operational problems.

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Assessed

Teacher: ___________________________________ Date: _________

Signature: ________________________________________________

Comments:

 

 

 

 

 

 

 

 

Instructions to Assessors

Evidence Guide

The Evidence Guide provides advice on assessment and must be read in conjunction with the Performance Criteria, Required Skills and Knowledge, the Range Statement and the Assessment Guidelines for the Training Package.

Overview of assessment

Assessment for this unit of competency will be on an operating plant. The unit will be assessed in as holistic a manner as is practical and may be integrated with the assessment of other relevant units of competency. Assessment will occur over a range of situations, which will include disruptions to normal, smooth operation.

Simulation may be required to allow for timely assessment of parts of this unit of competency (eg Elements 1, 2 and 4). Simulation should be based on the actual plant and will include walk-throughs of the relevant competency components. Simulations may also include the use of case studies/scenarios, role plays and 3D virtual reality interactive systems. In the case of evacuation training or of training for competencies practised in life threatening situations, simulation may be used for the bulk of the training.

This unit of competency requires an application of the knowledge contained in the use of the turbine and its integral equipment, to the level needed to maintain control and recognise and resolve problems. This can be assessed through questioning and the use of what-if scenarios both on the plant (during demonstration of normal operations and walk-throughs of abnormal operations) and off the plant.

Critical aspects for assessment and evidence required to demonstrate competency in this unit

Competence must be demonstrated in the ability to recognise and analyse potential situations requiring action and then in implementing appropriate corrective action. The emphasis should be on the ability to stay out of trouble rather than on recovery from a disaster.

Consistent performance should be demonstrated. In particular look to see that:

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

the range of possible causes can be identified and analysed and the most likely cause determined

appropriate action is taken to ensure a timely return to full performance

obvious problems in related plant areas are recognised and an appropriate contribution made to their solution.

These aspects may be best assessed using a range of scenarios/case studies/what-ifs as the stimulus with a walk-through forming part of the response. These assessment activities should include a range of problems, including new, unusual and improbable situations, which may have been generated from the past incident history of the turbine, incidents on similar turbines around the world, hazard analysis activities and similar sources.

Context of and specific resources for assessment

As a general rule assessment will require access to an operating plant over an extended period of time, or a suitable method of gathering evidence of operating competence over a range of situations. A bank of scenarios/case studies/what-ifs will be required as will a bank of questions which will be used to probe the reasoning behind the observable actions.

Method of assessment

In all plants it may be appropriate to assess this unit concurrently with relevant teamwork and communication units.

Guidance information for assessment

Assessment processes and techniques must be culturally appropriate and appropriate to the oracy, language and literacy capacity of the assessee and the work being performed.

Required Skills and Knowledge

This describes the essential skills and knowledge and their level, required for this unit.

Required skills

Competence includes the ability to distinguish between causes of problems/alarms/fault indications such as:

turbine failure or malfunction

electrical failure or malfunction

mechanical failure/malfunction

quality measurement inaccuracy, eg analyzer, manual sampling deficiencies

air/fuel quality

Required knowledge

The knowledge referred to in the Evidence Guide for this unit includes:

identify all items on a schematic of the turbine and describe the function of each

turbine operating parameters and capacities

turbine operating principles, including fuel injection, lubrication, cooling, ignition, induction and exhaust power supply

equipment operation, including, pressures temperatures and speeds

turbine equipment terminology

process drawings, eg PID, PFS. cause and effect

safety systems and procedures

Range Statement

The Range Statement relates to the unit of competency as a whole. It allows for different work environments and situations that may affect performance. Bold italicised wording, if used in the Performance Criteria, is detailed below. Add any essential operating conditions that may be present with training and assessment depending on the work situation, needs if the candidate, accessibility of the item, and local industry and regional contexts.

Codes of practice/ standards

Where reference is made to industry codes of practice, and/or Australian/international standards, the latest version must be used.

Context

This unit of competency includes all such items of equipment and unit operations which form part of the operating system. For your plant this may include (select relevant items):

gas turbine engines

electric motors

governing systems

power supply

safety and shutdown systems

cooling systems.

Typical problems for your plant may include:

variation in power/fuel supply

vibration

overheating

fouling of turbine/engine/exchangers

lubrication quality

ancillary equipment failures.

Health, safety and environment (HSE)

All operations to which this unit applies are subject to stringent health, safety and environment requirements, which may be imposed through State 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.