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Elements and Performance Criteria

  1. Plan for plant operation
  2. Operate Heat Recovery Steam Generator
  3. Operate generator and excitation system
  4. Control generation of electrical energy
  5. Coordinate unit operations
  6. Consultation with appropriate personnel is undertaken as required in accordance with site requirements
  7. Monitor system/plant
  8. Test system/plant operation
  9. Analyse system/plant faults
  10. 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 monitoring and coordinating the operation of a combined cycle gas turbine unit

All knowledge and skills detailed in this unit should be contextualised to current industry practices and technologies

The extent of the Essential Knowledge and Associated Skills required follows

KSPOB Operation of a combined cycle gas turbine unit

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

Relevant environmental occupational health and safety legislation and regulations

Enterprise procedures

Plant drawings and manufacturers manuals

Introduction to and typical arrangements of power production plant

Relevant plant and equipment its location and operating parameters

Relevant state and territory regulations

Electric motor types and characteristics

Pump and compressor types and characteristics

Valve damper and actuator types and characteristics

Switchgear types and characteristics

Electrical protection types and characteristics

Electrical principles

Process control principles

Plant process control systems

Fan types and characteristics

ac generators types and characteristics

Transformers types and characteristics

Generator excitation and cooling systems types and characteristics

Gas turbine principle of operation

Gas turbine air intake types and characteristics

Gas turbine air inlet cooling and heating systems types and characteristics

Gas turbine exhaust types and characteristics

Gas turbine lubrication systems types and characteristics

Gas turbine control oil systems types and characteristics

Gas turbine water wash systems types and characteristics

Gas turbine cooling systems types and characteristics

Gas turbine watersteam injection systems types and characteristics

Gas turbine combustion system types and characteristics

The principles of control of steam temperature and pressure throughout the full range of heat recovery steam generation operation up to and including maximum continuous rating

Heat recovery steam generator efficiency

The arrangement of the heat recovery steam generator gas path and water and steam circuits

Fuel conditioning and supplementary firing equipment

The heat recovery steam generator system components and their interaction with other plant and equipment external to that covered by this competency

ac and dc electrical distribution systems

Duct burners types and characteristics

Heat recovery steam generator construction and principles

Thermodynamics

Properties of Matter

Steam turbine power and control oil systems types and characteristics

Compressed air systems types and characteristics

Steam turbine life expenditure and control

Steam turbine bypass system types and characteristics

Vacuum raising and turbine gland sealing systems

Steam Turbine types and characteristics

Steam turbine lubrication systems types and characteristics

Steam turbine condensate and feedwater systems

Feedwater heating types and characteristics

Drainage systems types and characteristics

Steam turbine circulating water system types and characteristics

Steam turbine condenser systems types and characteristics

Plant status

Control and data acquisition systems

Computers and software

Supervisory alarm protection and control equipment

Principles of generator and system stability

The systems components and interactions

Principles of electricity generation

Lubrication and bearings

Liquid pumping systems

Power plant cycle

Fuel type and properties

Fuel conditioning and fuel firing equipment

Air extraction systems

High voltage systems

High voltage switching procedures

T Specific skills needed to achieve the Performance Criteria

Interpret plant drawings and manufacturers manuals

Apply relevant state and territory regulations

Apply enterprise recording procedures

Identify plant status

Prepare plantequipment for operation

Organise resources

Coordinate power generation

Apply diagnostic and testing techniques

Identify and respond to abnormal plant operating conditions

Plan and prioritise work

Use relevant hand tools

Communicate effectively

Apply data analysis techniques and tools

Coordinate the operation of interacting systems

Coordinate the operation of plant and equipment

Maintain generator unit integrity

Apply principles of electrical generation

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 work performance 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 employability skills

Conduct work observing the relevant AntiDiscrimination 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 emergency procedures

The preparation and planning of work

The operation of generator and excitation systems

Coordination of unit operations

Analysing plant faults

Monitoring plant operation

Controlling system energy generation

The knowledge of generator and system stability principles

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 Section Assessment Guidelines

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 learningassessment 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

UEPOPSB Operate and Monitor a Heat Recovery Steam Generator Unit

UEPOPS434B Operate and Monitor a Heat Recovery Steam Generator Unit


Range Statement

10) 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.

Systems, plant and equipment may include generator cooling systems; fuel delivery systems; generator and generator auxiliary plant; generator seal oil system; generation fire protection system; boiler, turbine and unit coordinated control systems; generator circuit breaker/transformer; unit auxiliary switchboards; electricity market auto loading systems; generator excitation systems which may include- d.c. pilot excitors and amplidyne(s) control, a.c. pilot excitors and thyristor control, brushless systems, static systems, associated supervisory, control and protection equipment; Circuit breakers, field, excitor, flashing, associated supervisory, control and protection equipment; Transformers, excitation, earthing and neutral, voltage and current; and automatic voltage regulator (AVR) system.

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

Information and documentation sources may include verbal or written communications; enterprise safety rules documentation; enterprise operating instructions; equipment and alarm manuals; dedicated computer equipment; enterprise standing instructions and plant notes; enterprise log books; market load profile forecasts; electricity market bidding information; and manufacturer’s operation and maintenance manuals.

Technical and operational indicators may include stimuli (audio, smell, touch, visual), remote or local indicators and recorders, computers and alarms (visible and/or audible).

Communications may be by means of telephone, two way radio, pager, computer (electronic mail) and operating logs (written or verbal).

Tests may include supply change-over tests, “black” start tests and capability tests.

Appropriate personnel to consult, give or receive direction may include supervisor/team leader or equivalent; other coordinators of energy production; other operating staff; technical and engineering officers or equivalent; maintenance personnel; and contractor staff.

Operating environment may be remote from plant and equipment being operated; where operation is assisted by remote indicators of plant status and other parameters monitored; during night periods; during inclement or otherwise harsh weather conditions; and in wet/noisy/dusty areas.

Unit operations (systems requirements) may include normal generating models and system auto frequency control mode.

Faults and abnormal operating conditions may include unit trip; market distribution network disturbances; loss of station a.c. supplies; spurious abnormal fuel condition, operations; generator hydrogen cooling/sealing system malfunctions; generator cooling system malfunctions; generator excitation/transformer; CB faults/malfunctions; and unit coordinated controls malfunctions.

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 Section 2.1 Preliminary Information and Glossaries.