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Elements and Performance Criteria

  1. Plan and prepare work
  2. Operate plant
  3. Test plant operation
  4. Analyse system faults
  5. Complete documentation

Required Skills

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

Evidence shall show that knowledge has been acquired in shutting down a gas turbine

The extent of the Essential Knowledge and Associated Skills required follows

Evidence shall show that knowledge has been acquired for safe working practices of

Relevant Occupational Health and Safety regulations

relevant statutory legislation environmental legislation

relevant enterprisesite safety procedures enterprisesite emergency procedures and techniques

enterprise recording procedures communication principles

control and data acquisition systems computers and software

mechanical and electrical supervisory alarm protection and control equipment

enterprisesite standard operating procedures safe operating principles

Mathematics Mechanics Physics Chemistry and Electrical Principles

Motor performance characteristics pump and compressor performance characteristics

valve damper and actuator types and performance characteristics

The principles of safe and efficient fuel combustion

the purpose function and operation of fuel storage conditioning transfer and firing equipment

the objectives sequence of operations critical operating parameters and safety precautions associated with a gas turbine start up

gas turbine efficiency the gas turbine main and auxiliary systems components and their interaction with other plant and equipment external to that covered by this competency

AC and DC electrical distribution systems electric motors switchgear

Station water distribution systems fire protection control systems

compressed air systems auxiliary supply systems

Specific skills needed to achieve the Performance Criteria

Apply relevant Occupational Health and Safety regulations

apply relevant statutory legislation

apply relevant enterprisesite safety procedures

apply enterprisesite emergency procedures and techniques

apply enterprisesite standard operating procedures and safe operating principles

apply enterprise recording procedures

use and interpret diagrams drawings and symbols

communicate effectively

plan and prioritise work

organise resources

identify plant status prepare plantequipment for operation

use relevant hand tools

operate gas turbine and associated plant and equipment

apply diagnostic and testing techniques

identify and respond to abnormal plant operating conditions

apply data analysis techniques and tools

coordinate the operation of equipment in such a manner as to maintain plant integrity personnel safety continuity of supply and optimum efficiency

Evidence Required

This provides essential advice for assessment of the competency standard unit and must be read in conjunction with the Performance Criteria and the Range Statement of the unit and the Training Package Assessment Guidelines

The Evidence Guide forms an integral part of this competency standard unit and shall be used in conjunction with all components parts of this unit and performed in accordance with the Assessment Guidelines of this Training Package

Overview of Assessment

Longitude competency development approaches to assessment such as Profiling require data to be reliably gathered in a form that can be consistently interpreted over time This approach is best utilised in Apprenticeship programs and reduces assessment intervention It is the Industry preferred model for apprenticeships However where summative or final assessment is used it is to include the application of the competency in the normal work environment or at a minimum the application of the competency in a realistically simulated work environment It is recognised that in some circumstances assessment in part or full can occur outside the workplace However it must be in accord with Industry and regulatory policy

Methods chosen for a particular assessment will be influenced by various factors These include the extent of the assessment the most effective locations for the assessment activities to take place access to physical resources additional safety measures that may be required and the critical nature of the competencies being assessed

The critical safety nature of working with electricity electrical equipment gas or any other hazardous substancematerial carries risk in deeming a person competent Hence sources of evidence need to be rich in nature so as to minimise error in judgment

Activities associated with normal every day work have a bearing on the decision as to how much and how detailed the data gathered will contribute to its richness Some skills are more critical to safety and operational requirements while the same skills may be more or less frequently practised These points are raised for the assessors to consider when choosing an assessment method and developing assessment instruments Sample assessment instruments are included in the Assessment Guidelines of this Training Package

Critical aspects of evidence required to demonstrate competency in this unit

Before the critical aspects of evidence are considered all prerequisites shall be met

Evidence for competence in this unit shall be considered holistically Each element and associated Performance Criteria shall be demonstrated on at least two occasions in accordance with the Assessment Guidelines UEP Evidence shall also comprise

A representative body of Performance Criteria demonstrated within the timeframes typically expected of the discipline work function and industrial environment In particular this shall incorporate evidence that shows a candidate is able to

Implement Occupational Health and Safety workplace procedures and practices including the use of risk control measures as specified in the Performance Criteria and Range Statement

Apply sustainable energy principles and practices as specified in the Performance Criteria and Range Statement

Demonstrate an understanding of the essential knowledge and associated skills as described in Essential Knowledge and Associated Skills of this unit

Demonstrate an appropriate level of skills enabling employment

Conduct work observing the relevant Anti Discrimination legislation regulations polices and workplace procedure

Demonstrated performance across a representative range of contexts from the prescribed items below

The knowledge and application of relevant sections of occupational health and safety legislation statutory legislation enterprisesite safety procedures enterprisesite standard operating procedures and safe operating principles enterprisesite emergency procedures

The knowledge of principles and techniques of operation of a gas turbine and associated plant and equipment

The knowledge of operational testing of plant

The knowledge of system components and the manner in which these components interact with other plant and equipment

The knowledge of the principles of fuel combustion and emission control

The knowledge of the principles of heat recovery steam generator and feedwater sampling and chemical treatment

The ability to prepare and plan work

The ability to prepare plantequipment for operation

The ability to monitor and operate plantequipment in accordance with enterprisesite standard operating procedures and safe operating principles

The ability to analyse plant faults

Dealing with an unplanned event by drawing on essential knowledge and skills to provide appropriate solutions incorporated in the holistic assessment with the above listed items

Context of and specific resources for assessment

This unit should be assessed as it relates to normal work practice using procedures information and resources typical of a workplace This should include

OHS policy and work procedures and instructions

Suitable work environment facilities equipment and materials to undertake actual work as prescribed by this unit

Competency Standards should be assessed in the workplace or simulated workplace and under the normal range of workplace conditions

Assessment of this unit will be supported with documentary evidence by means of endorsement stating type and application of work

In addition to the resources listed above in Context of assessment evidence should show competency working in limited spaces with different types of plant and equipment as well as different structuralconstruction types and methods and in a variety of environments

Method of assessment

This unit shall be assessed by methods given in Volume Part Assessment Guidelines

NoteCompetent performance with inherent safe working practices is expected in the Industry to which this unit applies This requires that the specified essential knowledge and associated skills are assessed in a structured environment which is primarily intended for learningassessment and incorporates all necessary equipment and facilities for learners to develop and demonstrate the essential knowledge and skills described in this unit

Note:
Competent performance with inherent safe working practices is expected in the Industry to which this unit applies. This requires that the specified essential knowledge and associated skills are assessed in a structured environment which is primarily intended for learning/assessment and incorporates all necessary equipment and facilities for learners to develop and demonstrate the essential knowledge and skills described in this unit.

Concurrent assessment and relationship with other units

There are no recommended concurrent assessments with this unit however in some cases efficiencies may be gained in terms of learning and assessment effort being concurrently managed with allied competency standard units where listed

UEPOPSA

Operate and monitor a gas turbine unit

UEPOPSA

Operate and monitor HRSG hot gas control system

UEPOPSA

Start up a heat recovery steam generator unit

Key competencies

Evidence that particular key competencies have been achieved within this unit is in the context of the following Performance Criteria of evidence See Volume Part for an explanation of Key competencies and levels of this Training Package

Key competencies

Example of Application

Performance Level

How are ideas and information communicated within this competency

Refer to the following example of application

Explain ideas and actions make suggestions for alternative actions and deal with contingencies and nonroutine situations

How can information be collected analysed and organised

Refer to the following example of application

Information with regard to operations faults and maintenance may be observed and monitored for analysis and organised into records and reports

How are activities planned and organised

Refer to the following example of application

Planning the required activity to include coordination and use of equipment materials and tools to avoid backtracking and rework

How is team work used within this competency

Refer to the following example of application

Coordinate activities of the team and provide appropriate support to other team members in completion of work tasks to meet the teams goals

How are mathematical ideas and techniques used

Refer to the following example of application

Calculation of time to complete routine projects operations tasks estimation of distances levels loads and material requirements

How are problem solving skills applied

Refer to the following example of application

Determine solutions which focus on long and shortterm resolution of work task problems

How is use of technology applied

Refer to the following example of application

Access communicate measure and provide information to monitor operations and performance of plant and equipment

Skills Enabling Employment

Evidence that competency in this unit incorporates skills enabling employment is in the context of the following performance See Volume Part for definitions and an explanation of skills enabling employment

Skills for Employment

Example of Application

Developing and using skills within a real workplace

Refer to the following example of application

Completion of tasks within an acceptable timeframe and performance with some supervision

Learning to learn in the workplace

Refer to the following example of application

Comprehension and application of theoretical knowledge to welldeveloped skills

Reflecting on the outcome and process of work task

Refer to the following example of application

Focused on improvement in own and other team members performance in the workplace

Interacting and understanding of the context of the work task

Refer to the following example of application

Working understanding of the processes and systems which apply to the workplace

Planning and organising the meaningful work task

Refer to the following example of application

Achieving work tasks in a timely manner and ensuring that the work team achieves its stated work goals

Performing the work task in nonroutine or contingent situations

Refer to the following example of application

Seek advice and apply solutions to problems relevant to the workplace environment


Range Statement

7) This relates to the competency standard unit as a whole, providing the range of contexts and conditions to which the Performance Criteria apply. It allows for different work environments and situations that will affect performance.

Plant and equipment may include: gas turbines; gas turbine emission control equipment; gas turbine exhaust gas control dampers; heat recovery steam generators and auxiliary plant; heat recovery steam generator supplementary duct firing equipment; fuel and fuel delivery systems; fuel management systems; flame detection equipment; steam temperature control equipment; AC and DC electrical distribution systems; electrical switchgear; electric motors; electric motor driven pumps and fans; diesel engine driven auxiliary plant; station water distribution systems; hydraulic power oil systems; compressed air systems; distributed control systems; supervisory, protection, alarm and control equipment.

Safety standards may include relevant sections of Occupational Health and Safety legislation, enterprise safety rules, relevant State and federal legislation, national standards for plant and Australian standards.

Information and documentation sources may include verbal or written communications; enterprise safety rules documentation; enterprise operating instructions; computer-based and computer accessed documentation; enterprise/site standing and operating instructions; enterprise log books; manufacturer's operation and maintenance manuals; and equipment and alarm manuals.

Technical and operational indicators may include stimuli (auditory, olfactory, tactile, visual), local indicators and recorders, computers and alarms (visible and/or audible).

Communications may be by direct personal interaction or by means of telephone, verbal or text-based telephone messaging, two way radio, pager, computer (electronic mail) and/or operating logs (written or verbal).

Appropriate personnel for consultation, giving or receiving direction may include: supervisor/team leader or equivalent, power plant operations personnel or equivalent, technical and engineering officers or equivalent, maintenance staff, other operating staff or equivalent, system controller/network controller, field operator, restricted H.V. operators, independent generators and customers and contractor staff.

Operating environment may be remote from the plant and equipment being operated, (in cases where operation is assisted by remote indication of operating parameters and plant status), during inclement or otherwise harsh weather conditions, in hot/wet/noisy/dusty/elevated/confined or enclosed areas or during night periods.

Plant operations (systems requirements) may include:

Returns to service with the heat recovery steam generator in a cold, warm or hot condition, compressor on-load or off load blade washing, operational testing.

Operational tests may include:

Loss of a major auxiliary control response checks; stand-by plant "cut-in" tests; dampers/valves operating checks and pre and post start tests

Faults and abnormal operating conditions may include:

Failure of starting device; excessively high exhaust temperature, excessive blade path temperature spread, excessively high wheel space temperature, excessively high compartment temperatures, excessively high shaft or bearing vibration, excessively high speed (or frequency, when synchronised); reduction in flow or failure of fuel supply; uneven fuel distribution to combustors; loss of a major auxiliary; loss of electrical supply to switchboards, drive motors or valve actuators; automatic control loop(s) malfunctions; high temperatures on/in: motor and/or pump bearings, lubricating oil or motor windings; heat exchange element tube leaks; excessively high heating/cooling rates; high differential pressures on fuel/oil/air filters and strainers; failed field devices; failed/malfunctioning actuators/dampers/valves.

Generic terms are used throughout this Training Package for vocational standard shall be regarded as part of the Range Statement in which competency is demonstrated. The definition of these and other terms are given in Volume 2, Part 1.