This unit involves the skills and knowledge required to shut down an in-service heat recovery steam generator (HRSG) unit.

HRSGs are heat exchangers that retrieve heat from hot gas streams which is then supplied to steam turbines to generate additional electric power. Shutting down an HRSG unit, with or without supplementary firing, to a boxed-up condition will require the hot and cold gas outlet dampers to be closed and the steam water drum to be pressurised at a normal working level prior to a hot or warm restart, or to be in a depressurised state in preparation for a short or long outage.

Competency in this unit requires the ability to plan and prepare shutdown, operate plant during shutdown, test and analyse steam turbine system faults, and complete documentation. Individuals will, in general, work under supervision, in a power generation facility as an operator

Power generation plant operators are 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.