General Electric (designed), Ansaldo Energia, Nuovo Pignone, Jeumont Industrie

This plant, installed in 2000, has operated in connection to a metallurgic plant, recently stopped. This plant is able to burn the waste process gas from metallurgic plant.

The natural gas is mixed with the LDG gas, it can burn the CO residual improving the calorific power of the gas. So it is great cause the low plant emissions respectful for the environment.

In the same time this recovering system emproves the capacity of the plant.

The gas turbines are multi shaft PGT10S-1s, with separate electric starter motors. There is a blast stack for each gas turbine for start up so the gas turbines can operate in simple cycle, although this mode of operation would not prove to be economical.

The air filters are single stage cartridge filter elements supplied by Donaldson.

The generators for the gas turbine are both of the Vacuum Pressure Impregnated (VPI) type, the stator bars are secured by resin and the stator is then baked in an oven. This is an ASB design, although the VPI design is proving reliable there are some concerns as it is difficult to carry out repairs should a fault develop and in some instances the entire stator has had to be shipped to the manufacturer works for repairs. There has also been a requirement for resin injection for some of these machines due to resin shrinkage.

Spacing Approximately 20 m adjacent to steam turbine TURBINE Number of units 2

The 2 off heat recovery steam generators are equipped with supplementary firing and have the added advantage in that they can operate autonomously without the need for the gas turbines to be in service. Both are equipped with a forced draft (FD) and gas recirculation (GR) fan. This helps to raise flue gas temperatures when firing syngas with a low calorific value.

Drum Level Control Via 3 level transmitters (differential pressure) with

Boiler interlocks (level, temp, press) Adequate, includes independent remote drum level

Online analyses for pH, conductivity, dissolved oxygen, sodium and silica are monitored continuously online. The HRSG is dosed with phosphate and carbo-hydrazine.

The steam turbine is of Siemens design and includes three bleeds which supply the deaerator, condensate preheater and 5 tih of steam for the steel works although this is no

Type, N® of cylinders & reheat Single flow, single cylinder condensing, 1 stage