| C | compressor, |
| CC | combined cycle, |
| COND | condenser, |
| cc | combustion chamber, |
| CW | cooling water, |
| CSP | cooling system pump, |
| EG | electric generator, |
| GT | gas turbine, |
| HPD | high-pressure drum, |
| HPEC | high-pressure economizer, |
| HPEV | high-pressure evaporator, |
| HPP | high-pressure pump, |
| HPPH | high-pressure preheater, |
| HPSH | high-pressure superheater, |
| HPST | high-pressure steam turbine, |
| HRSG | heat recovery steam generator, |
| IPD | intermediate-pressure drum, |
| IPEC | intermediate-pressure economizer, |
| IPEV | intermediate-pressure evaporator, |
| IPP | intermediate-pressure pump, |
| IPRH | intermediate-pressure reheater, |
| IPSH | intermediate-pressure superheater, |
| IPST | intermediate-pressure steam turbine, |
| LPD | low-pressure drum, |
| LPEC | low-pressure economizer, |
| LPEV | low-pressure evaporator, |
| LPP | low-pressure pump, |
| LPSH | low-pressure superheater, |
| LPST | low-pressure steam turbine, |
| M | stream mixer, |
| m | union of steam streams, |
| SC | steam cycle, |
| ST | steam turbine, |
| t | turbine. |