1 X Used 106Mw Dual Fuel Co-Generation Plant Comprised Of

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GTG_1329GR_Fm6CoGen50Hz.doc

1 x Used 106Mw Dual Fuel Co-Generation Plant Comprised of: 2 x GE PG6531B Gas Turbines and 2 x 18MW Generator x Nanjing Turbine ST-G

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 BOP, Including HFO Plant  CTGs can be Purchase w/complete Simple cycle BOP Gas turbine has the following features: fast start and stop, Load faster and few pollution emissions etc. 1# gas turbine genset can not only burn single light oil or single gas as fuel, but also use mixed fuel of oil with gas. In the course of operation, it is easy to make change from

Plant constructed in March, 1987, as a combined cycle with total capacity of 106mw. one fuel mode to another fuel mode.

Total equipments were imported from abroad, two units of PG6531 gas turbine gensets were made by JBE to GE technology with rated unit capacity of 36mw. And two units of single pressure natural circulation heat recovery boilers of capacity of 66T/H were manufactured by SFL, Netherland, one extraction steam turbine of 34mw was made by Siemens.

The first phase was put into operation as single cycle in 1990, and constructed as combined cycle in operation in 1991. In 1994 the fuel feed system was modified from gas system to duel system for crude oil and natural gas. The modified combined duel fuel system was synchronized to grid for supply power to gird in 1996. until 2000, the total generated power is 2328489.6MWH, total running hours of the three generating units are 107,925.4 hours.

2 Units: Model PG6531 Fuel: Duel Fuel - Natural gas and liquid fuel Date of manufacture: 1988-1-4 Date of commissioning: 1990-1-4 Output power: 37.18MW Efficiency: 32.32% Generator maker: JBE Generator model: BDAXT-255ER Total running hours: GT#1 : 106,05.2 GT#2 : 56,712 Peak fired time: GT#1: 72.3 GT#2: 0.0 Total starts : GT#1 : 126 GT#2: 130

1 Unit Of Siemens Steam Turbine Model: ENKS63/2 63/28/50-3 Date Of Manufacture: 1987-1-4 Date Of Commissioning: 1992-1-10 Rated Output Power: 35.3MW, Steam Pressure: 3.979Mpa, Steam Temp: 445 C, 3000rpm, 132T/h

1 unit of JBE Steam turbine generator model: BDAXT-255ER Date Of Manufacture: 1988-1-4 Date Of Commissioning: 1991-6-1 Rated Output Power: 31.2MW Total Running Hour: 30582

2 Units Of Standard SFSEL-LENTTES Horizontal Type Single Pressure HRSG: Capacity: 8.3cbm Design Pressure: 4.18Mpa Temp: 453˚C, 66T/h Date of manufacture: 1988-1-1 Date of commissioning: 1992-1-10

1# Gas Turbine

1. Technical Specification of 1# Gas Turbine:

Manufacturer: China Nanjing Turbine and electrical machinery Co.

Model: PG6541B

Under the condition of ISO(Air Temperature 15, Atmospheric Pressure 1.013×105Pa), under basic load, technical performance indicators of the units are as follows: 5100T/M GT Rotational speed, Intake pressure loss 996Pa, Exhaust pressure loss 622Pa.

When units use fuel to standard of GEI-41047, units parameters in single cycle operation are as follows:

Operation Mode Basic Load Fuel Light Oil Heavy Oil Output Power kW 36475 35200 Heat Rate KJ/KW.h 11786 12099 Heat Consumption 106KJ/h 429.8 425.8 Turbine Inlet Temperature 1104 1088 Exhaust Temperature 539 529 Air Flow 103Kg/h 491 491 Oil Consuming Rate g/KW.h 276 289 * Calculate light oil low calorific value based on 42000KJ/Kg

2. Generator technical specifications of 1# GT are as follows:

Manufacturer Nanjing Turbine and Electric Machinery Co. Model QFR-36-2 Product Standard QJ/3201 NQ003-89 Rated Power 36MW Rated Voltage 10.5KV Rated Current 2474A Power Factor 0.8 Frequency 50HZ

Rotational Speed 3000 rpm Excitation voltage 160V Excitation Current 829A Stator insulation B Rotor insulation F( Examination on B Grade)

3. GT Operation No. 1 GT was first put in operation in Oct. 1996, until now it started 1,430 times, among them ignition it 1,113times. In total, it operates 12,716 hours, among them, operation burning fuel (light oil) is 12,292 hours, gas fuel (gas) 424 hours, 16 interruptions. At present, # 1GT can’t operate with full load, due to vibration with generator, other aspects are all normal.

4. Maintenance - Repairs 1. in April in 1999, after operating 3,920 hours, GT was done with combustion inspection. We replaced the flame tubes 1#, 3# and 10#. 2. In March in 2003, operating 6,452 hours, GT went into halfway repair. We replaced flame tube 9# and positive flame connecting tubes 1-2 and 2-3; 10 transition portions were sent to Shenyang for repair, replacing inside and outside floating seal and spraying coating again.

3. in March in 2004, after operating 8,500 hours, generator went into large-scale repair, replacing Bearing 4#, repairing Bearing 3#; The generator guard ring shifts, generator were sent to Nanjing Turbine and Electric Machinery Co. to reassemble.

4. In March of 2005, after operating 11,722 hours, GT went into overhauling. Overhaul appendix gear box: replace Bearing 2# and Tile 3#, Bearing 3A# and Tile 5#, Bearing 3B# and Tile #, Bearing 4# and 4 tiles inside and outside. Generator Overhaul: sent generator rotor back to Nanjing company to replace its guard ring. Loading gear box Overhaul: replacing the tiles of low-speed shaft and GT ending shaft, at the same time, finding radial runout of high-speed shaft to reach 1.31, but not handled it. Overhaul GT body: replacing the first level sprayer, 10 transition portions and tiles of Bearings 1# and 2#.

1.1.3 technical specification of AC main Exciter without brush

Manufacturer Nanjing Turbine and Electric Machinery Co. Model JWL130-3000 Product Standard QJ/NQ004-89 Phase Count 3 Excitation Method Separate excitation

Rotational Speed 3000 rpm DC Power 130KW DC Voltage 157V DC Electric Current 829A Excitation Voltage 46.1V Excitation Electric Current6.2A Rectification Way Three-phase bridge Insulation Class B

1.1.4 Vice-exciter technical specifications:

Manufacturer Nanjing Turbine and Electric Machinery Co. Model TFY2.85-3000C Product Standard QJ/NQ005-89 Phase Counts 1 Excitation Method Permanent Excitation

Rotational Speed 3000 rpm Frequency 400HZ Power Factor 0.9 Capacity 2.85KVA Voltage 190V 15A Electric Current Insulation Class F

No. 2 Gas Turbine 1. Technical specifications: Manufacturer: China Nanjing Turbine and Electric Machinery Co. Model: PG6561B Under the condition of ISO (Air temperature 15, Atmospheric Pressure 1.013×105Pa, Relative Humidity 60%), under the basic load, units technical specifications are as follows: GT Rotational speed 5,133RPM, intake pressure loss 996Pa, exhaust pressure loss 622Pa. When units uses liquid fuel GEI-41047 and gas fuel GEI—41040E, units parameters in single cycle operation are as follows:

Operation Model Basic Load Light Oil Gas Fuel Output Power kW 38000 38700 Heat Rate KJ/KW.h 11514 11430 Heat Consumption 106KJ/h 439 443 Turbine inlet temperature ℃ 1104 1104 Exhaust temperature 532 532 Air Flow 103Kg/h 499 499

2. Generator technical specifications

Manufacturer Nanjing Turbine and Electric Machinery Co. Model QFR-38-2 Phase Number 3 Pole Number 2 Power 38MW Voltage 10.5KV Electric Current 2611．8A Power Factor 0.8 Frequency 50HZ

Rotational Speed 3000 rpm Excitation Voltage 162V Excitation Current 860A Insulation Class F Stator Connection Y

3. GT Operation

No. 3 GT started operation from July in 2003, until now started 534 times, among them ignition 497 times. In total, it operates for 6,201 hours, among which operation burning liquid fuel (light oil) for 5,582 hours, burning gas fuel (gas) for 619 hours, 21 interruptions. At present, the operation of 3# GT is basically in very good condition.

4. Maintenance - Repairs 1. in Nov of 2004, after operating 4,004 hours, GT went into combustion inspection(not to dismantle transition), replacing flame connecting tubes in 7#-8#(including 7#) and 3#- 2#(including 2#), and flame tube like 10#. 2. in April of 2004, after operating 5,470 hours, GT went into combustion inspection. We replace flame connecting tubes in 7#-8#(including 7#) and 9#-8#(including 9#). We sent 5 transition portions to Liming to repair: among them, the attrition of left side tail frame nearby negative camber is so severe as to be sent to repair.

1.1.3 Technical Specifications of AC main Exciter without Brush

Manufacturer Nanjing Turbine and Electric Machinery Co. Model JWL130-3000 Product Standard QJ/NQ004-89 Phase Number 3 Excitation Method Separate excitation

Rotational Speed 3000 rpm DC Power 130KW DC Voltage 157V DC Current 829A Excitation Voltage 46.1V Excitation Current 6.2A Rectification Way Three-Phase Bridge Insulation Class B

1.1.4 Auxiliary Exciter Technical Specifications” Manufacturer Nanjing Turbine and Electric Machinery Co. Model TFY2.85-3000C Product Standard QJ/NQ005-89 Phase Number 1 Excitation Method Permanent Excitation

Rotational Speed 3000 rpm Frequency 400HZ Power Factor 0.9 Capacity 2.85KVA Voltage 190V Electric Current 15A Insulation Class F