Boiler type HRSG is designed and constructed to recover heat from combustion turbine exhaust
gas. All pressure parts (superheaters, evaporator and economizer) are vertically arranged, top
supported from the structure and free to expand downward.
Gas inlet duct, casing and structural columns have been shop prefabricated and transported in
panel type to be field assembled. Duct and casing are internally insulated. Expansion joints have
been disposed at gas inlet duct and between casing and main stack. Tube penetrations for drains,
riser tubes and transfer pipes through roof a floor casing are isolated with bellows expansion joints.