GALAXIA Industries S.r.l. Sede Legale : L.go L. Antonelli, 8 00145 Roma (RM)

Sede operativa : Via G. Di Vittorio n° 59 00045 Genzano di Roma (RM)

Tel: +39 06 9391310 Fax: +39 06 95211815

E-mail: info@galaxiaindustries.it

P.E.C. galaxiaindustriessrl@legalmail.it

C.F. / IVA: IT 12385621003 R.E.A. n° 1370257

Issue Date: 10/04/2015 www.galaxiaindustries.it Revision n°: 0

Gas Turbine

Power Plant

150 MWe

South of Italy

GALAXIA Code PP 07-15

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A. GENERAL INFORMATION

The power plant is in an excellent condition and well maintained. Currently used as a

stand-by power station it regularly proofs its capability to smoothly run according

to its needs. Equipped with an emergency diesel it is capable of black start

operation.

The station provides a total installed capacity of 147 MWe, consists of three (3) Gas

turbines type GE LM 6000 PC Sprint, 49 MWe each, and by design is offering a

significant advantage to the interconnected system, i.e. a very quick start-up

reaching its maximum capacity performance in only 20 minutes.

The offered scope of supply is all the equipment for a complete plant (turnkey) i.e.

from gas supply including gas compressor and reducing station up to the 150 kV

SF6 substation and requires no additional equipment to be installed at the new

site.

The plant is being sold „as it is and where it is“. In agreement with the seller plant

surveys are possible as well as attending trial runs or boroscopic inspections.

B. OPERATIONAL DATA

C. TECHNICAL DESCRIPTION OF THE POWER PLANT

a) GAS TURBINES

Three (3) gas turbines General Electric type LM6000 PC Sprint with a nominal

power of 49,254 MW or 147.762 MW plant output @ ISO conditions. Water

(demineralized) injection system is available in order to reduce the NOx

emissions and to increase the power output at high ambient temperatures. The

GTs is equipped for dual fuel (gas and/or diesel no 2).

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Fig 2: Gas turbine type LM 6000 PC Sprint

The LM6000 is a split rotor, concentric drive shaft GT. The main components

consist of a variable inlet guide vane (VIGV) assembly, a 5-stage low-pressure

compressor (LPC), a 14-stage variable geometry high pressure compressor

(HPC), an annular combustor, a 2-stage high pressure turbine (HPT), a 5-stage

low pressure turbine (LPT), a Flender gearbox (AGB) assembly, and accessories.

The 2-stage HP turbine (same shaft) turns the 14-stage HP compressor @ 10600

rpm. The 5-stage LP turbine turns at 3600 rpm the 5-stage LP compressor and

via the gearbox the Generator at the 3000rpm synchronous speed.

b) GT AUXILIARY SYSTEM

Generator mineral lube oil system (MLO)

Turbine lube oil system (SLO)

Water injection and water sprint system

Anti-icing system

Hydraulic starter

Diesel feeding system

Fin fan cooling system

Generator circuit breaker

UPS – DC system

Inverter/charger 125V DC (SAFT power system); 196 batteries 1,14 V each

Inverter/charger 24V DC (SAFT power system); 118 batteries 1,14 V eac

Inverter/charger 110 V DC (SAFT power system); 95 batteries 1,14 V each

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Fig 3: GT #2 general view with auxiliaries Fig 4: GT thermal block LM 6000 PC Sprint

c) GAS TURBINE ELECTRONIC CONTROLS SYSTEM

Woodward MicroNet programmable control system

Platform for centralized software management and execution: iFix v2.5

Woodward Governor Company’s Graphical Application programmer

(GAP)

Fig 5: Central control room showing # 1&2 Fig 6: Electrical building with aux transformers

d) GENERATORS

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Fig 7: Brush generator Fig 8: Brush generator

Fig 9: Flender gearbox Fig 10: Jeumont Framatome generator

e) BOP SYSTEM

Water Treatment Plant

It consists of two identical demineralizing water production lines; one main and

one stand-by, with a capacity of 30m3/h each. In case of an emergency

situation both lines can operate in parallel with a maximum production of 60

m3/h.

The quality of the demineralized water should meet the following specification:

o SILICATE <100ppb

o CONDUCTIVITY <1 μS/cm

The main equipment (each line) consists of:

o Active carbon filter

o Cation resin filter

o CO2 de-gasifier_

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o Anion resin filter

Instrument & Service Air System

Fig 11: Water teatment plant & raw water pumps Fig 12: Instrument air compressors

Fire Protection System

It consists of 2 units, each one of 1 diesel pump, 1 electrical pump and 1 jockey

pump. Moreover, demineralized water is used as mean for the fire protection

of the transformers, so there the second set of the same pumps is used for that

purpose.

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Liquid Fuel System (Diesel)

The power plant is designed to use both gas as primary fuel or diesel as

secondary fuel for power production. The diesel fuel is stored on site by means

of a 2’500 m3 storage tank. The diesel fuel should pass through a centrifugal

separator (ALFA LAVAL) prior it is forwarded to the daily tank (500 m3) feeding

the units via pumps and filters.

Fig 13: Fire fighting pumps Fig 14: Alfa Laval centrifugal separator

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Gas Receiving Station (GRS)

It consists of two lines, where the main line has a regulator and the stand by

line has no regulator. The GRS also comprises a gas compressor 46 barg to

balance the pressure swings in the gas pipeline, a condensate tank and a

gas preheating.

Hot Water System (Boilers)

It consists of two gas fuelled boilers (2x100%). They can operate in parallel at

low ambient temperatures. The boilers supply hot water to the RMS in order to

warm the gas that feeds the units and also feeds the anti-icing system of #3.

Emergency Diesel Generator (supports safe shut down & black start)

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Fig 15: Tank farm (demi water, raw water, diesel) Fig 16: Demi water forwarding pumps

Tanks

at the plant there are the fallowing tanks installed;

o 2 x 1’000 m3 for raw water storage

o 1 x 500 m3 for demi water storage and fire protection of the transformers

o 6 x 100 m3 for demi water storage

o 1 x 2’500 m3 for diesel fuel storage_

o 1 x 500 m3 for diesel daily storage

Please note that tanks > 500 m3 might be replaced (local supply).

Steel Structures

Apart from the electrical building all buildings are made from bolted steel

structures which are easily to dismantle and to relocate (fire fighting, raw

water, demi water pumps, demi water treatment, heating boilers and air

compressors).

Generator synchronizing & protection and black start diesel are in containers.

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Fig 18: Gas compressor Fig 19: Gas reducing station

Fig 20: Hot water system Fig 21: Emergency diesel generator 1.8 MW

TRANSFORMERS

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Fig 22: Main transformer Fig 23: Step-up trafos gas compressor & plant

Fig 24: Electrical building Fig 25: Electrical building

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HV SUBSTATION

The SF6 GIS interconnects the power plant output with the HV grid. It gives

also the possibility to isolate the grid from the power plant and its protection.

The input and output voltage is 150KV and the equipment mainly comprises

of number of busbars, breakers, disconnectors and earth connectors as

follows:

Two (2) wave traps

o Six (6) surge arrestors

o GIS (gas insulated substation) panel board consist of:

Two (2) busbar systems

Two (2) full gates for the grid lines

One (1) busbar interconnection gate

Three (3) transformer gates

o Protection and control panel of PPC consist of:

Two (2) protection and control fields for the grid lines

One (1) busbar protection field and one (1) control field for busbar

interconnection

o Protection and control panel for customer production incl:

Three (3) protection & control fields one for each unit step up

transformer.

o IR (infrared) panel board consist of one (1) field

o Digital control system panel board for PPC consist of one (1) field.

o AC electrical panel board

incl:

One (1) field for inputs

One (1) field for

outputs

o DC electrical panel board (1

field)

o Charger – amplifier

o DC batteries rack

o UPS (with digital control

system)

o A/C unit

o Lighting electrical panel

Fig 26: GIS equipment 150 Kv

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Fig 26: GIS controls 150 kV Fig 28: GIS containers 150 k Fig 29: Single Line Diagram