Condition of the units: SGT-600 gas turbine generator set, with integral local equipment room. Unit(s) to be supplied are unused, with zero running hours, never installed.
Gas turbine package: SGT 600 gas turbine core engine original assembly.
AC generator: Original assembly location: Siemens Electrical Machines. Package and core engine serial numbers will be confirmed upon placement of order. The units' supporting documentation is available for review at any time with prior notice.
Scope Of Supply - Mechanical
Driven unit: AC generator, 11 kV, 3 phase, 50/60 Hz, 4 pole, 0.8 power factor, cylindrical pole brushless type, filter ventilated, class F insulation with class F total temperature rise generator bearing temperature instrumentation. Lubricating oil piping from gas turbine to driven unit.
Gas turbine engine: SGT 600 gas turbine engine – ISO rating 24.5 MWe – two-stage uncooled variable free power turbine; offers nominal shaft speed up to 7,700 rpm. Gas generator, air inlet casing, compressor rotor, compressor stator with variable guide vanes (VGV), centre casing, combustion system – dry low emissions (DLE) for dual fuels, compressor turbine rotor, compressor turbine stator, power turbine, hot gas interdict, power turbine rotor, power turbine stator, output shaft drive, exhaust outlet casing. Engine arranged for hot end drive. Engine bearing temperature and vibration instrumentation.
Underbase: Underbase – fabricated carbon steel construction, arranged for multi point mounting. Mounting assemblies for the gas turbine core, auxiliary gearbox, auxiliaries, and main gearbox. Driven unit – separate underbase. Integral lubrication oil tank – carbon steel.
Start system: Hydraulic motor and pump – AC electric motor driven.
Gears, couplings and guards: Gearbox seismic vibration instrumentation. Auxiliary gearbox incorporating drives to start system and lubricating oil pump. Drive coupling – high speed – flexible element dry type – turbine to gearbox. Drive coupling – low speed – flexible element dry type – gearbox to AC generator. Coupling guard – high speed – (carbon steel) – turbine to gearbox. Coupling guard – low speed – (carbon steel) – gearbox to driven unit.
Lubricating oil system: Integral mineral oil lubricating system serving the gas turbine, gearbox and driven unit. Lubricating oil pump main – gas turbine gearbox driven. Lubricating oil pump auxiliary – AC motor driven. Lubricating oil pump emergency – DC motor driven. Lubricating oil system filter duplex filter arrangement continuous flow transfer valves conforms to API 614. Filter body – carbon steel. Differential pressure indicator. Temperature and smart type pressure and level transmitters – aluminum bodies. Lubricating oil tank immersion heater. Lubricating oil system breather. Lubricating oil breather oil mist eliminator. Lubricating oil breather ducting – austenitic stainless steel. Lubricating oil system cooler airblast simplex lubricating oil cooler – package roof mounted. Cooler fan – single (100% duty). Suitable for a non-hazardous area. Lubricating oil cooler piping supply and return – austenitic stainless steel.
Gas fuel system: Pilot fuel flow control system with actuator and integrated pressure transmitters. Main fuel flow control system with actuator and integrated pressure transmitters. Rapid acting gas shut-off valves (2-off). Temperature transmitter – aluminum body. Gas fuel block and vent valve assembly – off package.
Acoustic enclosure: Acoustic enclosure – painted carbon steel, fitted over gas turbine, gearbox and auxiliaries. Doors for personal access and maintenance. 85 dB(A). Integral lifting beam for maintenance. Integral lightning. Acoustic system transmitters – Siemens standard smart type – aluminum. Excluded – ground level enclosure access platforms and steps.
Acoustic enclosure ventilation system: Ventilation air inlet filter pad type. Enclosure ventilation inlet and outlet dampers – air operated. Ventilation fan – single – AC electric driven – zone 2. Ventilation air system – negative pressure. Ventilation air silencer. Ventilation air inlet and outlet ducting. Integral support for turbine enclosure ventilation system.
Gas detection system: Gas detection equipment comprising 2 – I.R. point gas detectors (vent outlet).
Fire protection system: Fire protection system comprising 3 – I.R. multi spectrum flame detectors, 2 – heat detectors, single sounder/beacon (end of package), 1 – beacon (inside package), status indicator (end of package), 1 – MAC (manual alarm contact).
Fire extinguishing: Fire shot CO2 fire protection system – in accordance with NFPA 12. Cylinders housed in a weatherproof cabinet. Extinguisher system distribution pipework and nozzles. Piping from cabinet to package.
Combustion air inlet system: Combustion air filter – simple static element – painted carbon steel. Combustion air filter – weather hood. Combustion air filter – mist eliminator. Combustion air filter – EPA filter stage. Combustion air silencer – painted carbon steel. Combustion air inlet ducting – painted carbon steel. Integral support for combustion air inlet system. Maintenance access platform and ladder – combustion air filter.
Combustion exhaust system: Exhaust diffuser – ferritic stainless steel – horizontal orientation. Exhaust silencer – ferritic stainless steel hot section – coated carbon steel outer casing. Exhaust stack – ferritic stainless steel – floor standing vertical orientation – 15 m height (as per Siemens Energy standard design). Thermal insulation and aluminum cladding – personnel protection only.
Scope Of Supply - Electrical
Integral local electrical room (LER) designed to provide environmental protection for the SGT-600 package control panels and its operators. Fully equipped with lighting, power and environmental controls consisting of: 400 V AC – package motors and heaters supply, 230V 50Hz distribution board, internal and external lighting, industrial 230 V 50 Hz outlet, air conditioning/heat pump unit capable of maintaining control room at 20°C in all ambient conditions. A baseplate designed to support the control panel shelter and internal tread plates which will attach to the end of the SGT-600 package driver unit baseplate to allow for a single point lift of the driver package. A single control panel cubicle with support frame. The combined control panel will consist of a battery charger, unit control panel for turbine and generator. Control and monitoring and motor control centre. Batteries – VRLA type, sized to ensure a safe run-down of the turbine and driven unit in an emergency case.
Scope Of Supply - Control System
Package control system hardware. Control system mounted within integral LER.
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