This unit involves the skills and knowledge required to operate an in-service Heat Recover Steam Generator (HRSG). Operation of the HRSG, with or without supplementary firing, will be required through the full range of output, up to and including the maximum continuous rating.

A HRSG is a heat exchanger that retrieves heat from hot gasstreams which is then supplied to steam turbines to generate additional electrical power.

Competency in this unit requires the ability to plan work, carry out operation of HRSG system, test HRSG operation, analyse HRSG system faults, inspect and monitor HRSG system and complete all documentation. Individuals will, in general, work under supervision, in a power generation facility as an operator.

Power generation plant operators are typically trained and authorised to isolate, prepare plant and issue permits to work.

No licensing, legislative or certification requirements apply to this unit at the time of publication.

Note: Workplace practice

The application of the skills and knowledge described in this unit may require a licence or training permit to practice in the workplace where work is carried out on gas and electrical installations. Additional conditions may apply under state and territory legislative and regulatory licensing requirements.

ELEMENTS

PERFORMANCE CRITERIA

Elements describe the essential outcomes.

Performance criteria describe the performance needed to demonstrate achievement of the element.

1

Plan and prepare work

1.1

Safety issues related to operating and monitoring Heat Recovery Steam Generator (HRSG) plant are identified, in accordance with workplace procedures and Work, Health and Safety (WHS)/Occupational Health and Safety (OHS) regulations and legislative requirements

1.2

Work requirements are identified, in accordance with workplace procedures, from relevant personnel and documentation

1.3

Operational checks are carried out on HRSG plant, in accordance with workplace procedures, manufacturers' recommendations and site requirements

2

Operate HRSGplant

2.1

Gas turbine exhaust flow and power output are adjusted, in accordance with workplace procedures and operating requirements, to achieve steam flow conditions

2.2

Supplementary HRSG firing system, is placed into and out of service, as required, in accordance with workplace procedures, to maintain design steam flow and conditions

2.3

Monitoring and control of HRSG drum level, feedwater flow, steam temperature, pressure and flow are carried out, in accordance with workplace procedures, manufacturers' recommendations and site requirements

2.4

HRSG plant is operated within limits of its' design, and site requirements, in accordance with workplace procedures

2.5

Corrective action is taken to rectify HRSG abnormalities, in accordance with workplace procedures and manufacturers' recommendations procedures

3

Monitor HRSGplant

3.1

HRSG plant to be monitored is identified in accordance with workplace procedures

3.2

HSRG plant is monitored, in accordance with workplace procedures, for normal operation and/or to detect deviations from required operating conditions

3.3

HSRG plant integrity and personnel safety is maintained, in accordance with workplace procedures, and in consultation with appropriate personnel and technical and operational documentation

3.4

Appropriate personnel are notified, in accordance with workplace procedures, when defects are detected

4

Analyse HSRGfaults

4.1

Causes of abnormal HRSG plant operating conditions are identified, in accordance with workplace procedures, and by analysing relevant technical and operational information

4.2

Corrective action is taken, in accordance with workplace procedures

5

Test HSRGplant operation

5.1

Operational tests are performed, in accordance with workplace procedures

5.2

HRSG plant is observed for correct operational response, in accordance with workplace procedures

5.3

HRSG plant is returned to required operational status upon completion of testing, in accordance with workplace procedures

5.4

Corrective action is taken, in accordance with workplace procedures, when response does not meet with documentation, HRSG plant integrity or personnel safety requirements

6

Complete documentation

6.1

HSRG plant problems, movements and status are reported, in accordance with workplace procedures

6.2

Documentation is updated, in accordance with workplace procedures

Foundation skills essential to performance are explicit in the performance criteria of this unit of competency.

Range is restricted to essential operating conditions and any other variables essential to the work environment.

Non-essential conditions may be found in the Companion Volume Implementation Guide.

Electricity generation

Operations