This unit involves the skills and knowledge required to conduct a shut down of a steam turbine to where it is placed at rest.

Shut down of a steam turbine will involve the operator making a sequence of checks prior to and during shutdown. This ensures that the shut down of the turbine is completed in a safe and consistent manner.

Competency in this unit requires the ability to plan and prepare steam turbine shut down, conduct a shut down, test steam turbine plant operation during shut down, analyse system faults during shut down and completing 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 steam turbine shut down work

1.1

Safety issues are identified, in accordance with Work, Health and Safety (WHS)/Occupational Health and Safety (OHS) regulations, industry standards and workplace procedures

1.2

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

1.3

Turbine shut down schedule is identified from relevant documentation, in accordance with workplace procedures and site requirements

1.4

Pre-shut down checks are carried out on steam turbine plant, in accordance with manufacturers' recommendations and workplace procedures

2

Conduct steam turbine shutdown

2.1

Steam turbine load is reduced, in accordance with and manufacturers' recommendations and workplace procedures

2.2

Steam turbine and generator are removed from the steam generation system, in accordance with manufacturers' recommendations and workplace procedures

2.3

Steam turbine is placed on turning gear, in accordance with manufacturers' recommendations and workplace procedures

2.4

Steam turbine is cooled down on turning gear, in accordance with manufacturers recommendations and workplace procedures

3

Test steam turbine plant operation during shut down

3.1

Tests are performed, in accordance with workplace procedures

3.2

Steam generation system and steam turbine plant is observed, in accordance with workplace procedures, for correct operational response

3.3

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

3.4

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

4

Analyse and report on system faultsorstatus during steam turbine shutdown

4.1

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

4.2

Corrective action is taken, in accordance with workplace procedures

4.3

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

4.4

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

5

Complete documentation

5.1

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

5.2

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