55MW GE Frame 6B combine Cycle power plant for sale Dual fuel, 60Hz.

55MW GE Frame 6B Combined Cycle Complete Power Plant for Sale
Dual Fuel, 50Hz. Ansaldo Steam Turbine Generator

Contact Milt Fyre milt@rmaglobal.com 503-351-9898

History

Power plant was erected in 1994 and had the first commercial operation in February 1995.

Power plant will remain in stand by operation up to end of October 2010 (available to the local grid only for peaking expected during summer 2010), date when the plant should go out of operation, be de-commissioned and available for sale.

Equipment List & main specs

Combined Cycle Power Plant based on the following equipment list:

Equipment	Model	Make	Running hours (updated 1st May, 2010)
Gas Turbine	Frame 6B Steam I (Ext) G.E.	GE Licensee	110538
Steam Turbine	CDI 635 R	Ansaldo	108906
GT Generator	45 Mva T190 - 240	Alstom	110538
ST Generator	23 Mva GSCR - 1000 Z4	Ansaldo	108906
Gas Compressors	2HM/1 - Nuovo Pignone	Nuovo Pignone	110538
Heat Recovery Steam Generator	GVR	(Ansaldo)	110538
Step-up transformer 11 - 11 - 220 KV	3H6132 - TP	ABB	duty since 1994
Transformer 6 - 0,4 KV x auxiliaries	G30121/1 - TD1		duty since 1994
Transformer 6 - 0,4 KV x auxiliaries	G30121/2 - TD2		duty since 1994
Transformer 22 - 04 KV x emergency feeding	G30122/1 - TD3		duty since 1994
Transformer 11 - 6 KV x auxiliaries	G30123/1 - TA1		duty since 1994
Transformer 11 - 6 KV x auxiliaries	G30123/2 - TA2		duty since 1994

Major details are summarized in following table:

Typology	Power Plant Gross Output		[MW]	50,1
	Arrangement			combined cycle (1 TG + 1 TV)
	Main fuel TG			Natural gas
	Back up fuel TG			no
	Operation mode			Base load
	Black start			no
	By-pass stack			no
	Auxiliary boiler			yes (not for sale)
	Cogeneration mode (steam flow):	HP	[t/h]	8,5
		IP	[t/h]	13
		LP	[t/h]	6
	Steam pressure line:	HP	[bar]	24
		IP	[bar]	12
		LP	[bar]	6
	Efficiency (thermal + electric)		[%]	60,0
	Gross Electric Efficiency (without cogeneration)		[%]	45,3
Weather	Average, min, max Temperature		[°C]	12; -8; 35
	Average Humidity		[%]	60,0
Gas Turbine	Name			TG1
	Manufacturer			G.E.
	Gas turbine type			MS 6541 B
	TG Power - ISO conditions	Preselected load	[MWe]	-
		Base load	[MWe]	39
	1^st synchronizing			Aug 1994
	Operating Hours fuel gas	Fire Hours:		110538 at 01/05/2010
		Equivalent Operating Hours:		not used
	Anti-icing			steam
	Filters	Coalescer+prefilters+high eff.		yes
		Self cleaning (pulse jet)		no
	Aspiration system conditioner			no
	Gas compressor			yes
	Gas heating			no
	NOx reduction system			steam injection
	TG start device			electric motor + torque converter
	O2		[%]	15
	NOx limit value		[mg/Nm3]	200
	CO limit value		[mg/Nm3]	100
	Particulate Matter limit value		[mg/Nm3]	-
	SOx limit value		[mg/Nm3]	-
HRSG	Number of unit			1
	Name			GVR
	Manufacturer			ANSALDO
	Post firing			no
	Fresh air			no
	Pressure level and Temperature	HP	[bar ; °C]	70 ; 500
		IP	[bar ; °C]	-
		LP	[bar ; °C]	6 ; 285
	RH			no
	HP Feedwater Pump	Manufacturer		KSB
		Q; H; T [m3/h ; m ; °C]		69,7 ; ∆P max 75,5 ; 164 °C
Steam Turbine	Name			TV
	Manufacturer			ANSALDO
	Serial Number
	Power		[MWe]	15 (full condensing); 11 (cogenerative condition)
	1^st synchronizing			Aug 1994
	Operating Hours			108906 at 011/05/2010
	Condenser fluid			air
Cooling system	for Steam Turbine	Type		air condenser
		Manufacturer
		Thermal Power	[MWt]	44
	for Auxiliaries	Type		evaporative tower
		Manufacturer
		Thermal Power	[MWt]	unspecified
electrical	TG Generator			ALSTOM
	Power of TG Generator		[kVA]	46.000
	Cooling system of TG Generator			air / water
	TV Generator			ANSALDO
	Power of TV Generator		[kVA]	23.000
	Cooling system of TV Generator			air / water
	Main Transformer	TG		ABB
		TV
	Type of transformer	TG		75.000 kVA ONAN
		TV
Staff	Total staff of Power Plant			15
	Production department			11
	Nb. of staff per shift			1
	Maintenance department			3

Brief description of main features

GE Gas Turbine model Frame 6B

Frame 6B already incorporates latest GE upgrading packages like: upgraded brush seals for better efficiency, higher firing temperature for increased power output, upgraded IGV, Extendor Kit on combustion components to optimize maintenance and extend inspection intervals.

Gas Turbine Combustion system is Dual Fuel (Natural Gas + Distillate Oil).

Starting System is based on Electric Motor.

At date Frame 6B Gas Turbine accumulated 110,538 Firing Hours.

Second major Inspection to the Gas Turbine was completed last year.

45 MVA Alstom Generator (for GT), model T190 – 240. Spare stator for this generator is available at stock.

Mark V Control System.

Emission control by Steam injection on gas turbine: at 15°C ambient temperature, with GT full power output around 40 MW and about 2 Kilogram / sec of steam injection, emission levels are roughly:

80 to 90 ppm of Nox
1 to 1,5 of CO

Present owner confirms that the gas turbine already completed the second major overhaul before the end of commercial operation.

1 x 23 MW Ansaldo Steam Turbine, model CDI 635 R

1 x 23 MVA Alstom Generator (for ST), model GSCR – 1000 Z4

Steam turbine accumulated 108.906 firing Hours.

DCS Control System for thermal plant (boiler and steam turbine)

ST cross section is reported below:

2 x Gas Compressors

Power Plant is also equipped with two alternative compressors model 2HM/1, for natural gas: one compressor able to boost the pressure from the 11 - 12 bars of the pipeline up to 19,5 Bars required for the correct operation of the gas turbine.

Second compressor works in stand by mode, to replace the first in case of failure or maintenance. If both compressors work simultaneously, they are able to boost gas pressure from 5 bars up to 19,5 Bars. Below pipeline pressure of 5 Bars, the two compressors trip.

Both Compressors are powered by electrical motors.

PLANT IMAGES