Hurto a PDVSA (3): Sobreprecio de $18,2MM Rolls Royce Trent60

INSTRUCTIONS FOR FREIGHT FORWARDER:PLEASE CONTACT SUPPLIER FOR INLAND SHIPPING DETAILS

TERMS OF DELIVERY : FAS multiple ports of departurePAYMENT TERMS. : net 30 days CURRENCY : USD

P.O. General CommentsStandard Terms & Conditions attached in the RFQ 6000337393/UD64005463

THIS IS A RUSH REQUEST, PLEASE DO ALL POSSIBLE TO IMPROVE DELIVERY*************************************************************

IF SUPPLIER FAILS TO PROVIDE A P.O. ACKNOWLEDGMENT WITHIN THESPECIFIED PERIOD (48 HOURS), THEN SUCH P.O. SHALL BE DEEMEDACCEPTED BY SUPPLIER.

PRICE AND DELIVERY QUOTED MUST BE HELD FIRM THROUGH DELIVERY

YOUR REFERENCE: 409-2981OUR REFERENCE: RFQ N 6000337393/UD64005463

Progressive payment

PDVSA Services BV reserves the right to determine the most appropriate departure port.

PURPOSE OF CHANGE=================

BARIVEN,S.A.c/o PDVSA Services, B.V.Purchasing Agent (BE00)President Kennedylaan 192517 JK The Hague The Netherlands

SUPPLIER:Derwick Associates, S.A.MMG Tower, Piso 16, Calle 53, Urb.PANAMAPANAMAPOSTAL CODE: 0000000000 PO BOX: 0000000000SALESPERSON / PHONE: Pedro Trebbau Lopez/(507) 667 7612FAX: 2168002

Purchase order5100078131

DATE :February,20 2010CONTACT PERSON :CHRISTIAN MALDONADTELEPHONE HOLLAND : +31703488606E-MAIL ADDRESS:[email protected]

YOUR REF. 409-2981

PDVSA SUPPLIER CODE: 350015280

CHANGE ORDER NO. 01 IS ISSUED ON MARCH 15,2010 BY CHRISTIAN MALDONADO TO CHANGEDELIVERY DATE FOR ITEMS 1 AND 2, ALSO A CHANGED WAS MADE IN MATERIAL TEXT:

.IT IS MANDATORY FOR THE SUPPLIER TO PROVIDE ALL THE MAIN AND AUXILIARY SYSTEMS THATGUARANTEE A RELIABLE AND SAFE OPERATION OF THE EQUIPMENT. EXCEPTION IN THIS MATTERWILL NOT BE ADMITTED..

.IT REQUIRES THAT THE EQUIPMENT IS FULLY OPERATIONAL BY NO LATER THAN 90 CALENDARDAYS..

THESE TEXTS WERE DELETED, AS REQUESTED BY END USER CARLOS ROTONDARO, EMAIL MARCH 15,2010."PO VALUE DOES NOT CHANGE"

Shipping MarksBARIVEN, S.A./PDVSA PETROLEO / EYP OCCI5100078131/UD64005463

LAS-LA SALINAvia :MARACAIBO, VENEZUELAPRIORITY LEVEL: 3FIELD EXPEDITING: NINSPECTION FLAG: Y-I4 & Y-E2

______________________________________________________________________________________

ITEM MATERIAL QUANTITY UNIT DESCRIPTION UNIT PRICE TOTAL PRICE__________________________________________________________________________________________________________

00001 3 UNIT,CAPACITY: 58 MW 32.500.000,00 97.500.000,00

Delivery date Day 01.11.2010

Harmonized Tariff Code : 8502391000

Material purchasing textCAPACITY: 58 MW ISO

FUEL: DUAL

MOUNTING TYPE: FIXED.

GENERATOR: SYNCHRONOUS 3P, AIR COOLED, 13.8 KV. 60 HZ.INCLUDE POWER TRANSFORMER 3P 70/90 MVA 115/13.8 KV 60 HZ. BIL HT: 550KV. BIL LT: 110 KV. GROUP: YND1. TAP CHANGER: HAND OPERATION 5 POSITION.Z = 10%. BUSHING HT: ON TOP. BUSHING LT: IN BOX AIR-AIR LATERAL. NO LOAD

SUPPLIER:Derwick Associates, S.A.MMG Tower, Piso 16, Calle 53, Urb.PANAMA


Page: 2 of 1

______________________________________________________________________________________


LOSSES: 5000 $/KW. LOAD LOSSES: 1200 $/KW

INCLUDE ALL ACCESSORIES AND EQUIPMENT TO CORRECT OPERATION.INCLUDES FILTER HOUSE SYSTEM FILTERS FITTED RETAINERS OF DUST, HIGHEFFICIENCY FILTERS, INERTIAL SEPARATORSAND HOODS RAIN GUARD, CONTROLROOM EQUIPPED WITH ALL THE INSTRUMENTATION SYSTEMS AND PROTECTION UNITINCLUDES VIBRATION MONITORING SYSTEM, TEMPERATURE, PRESSURE AND CONTROLSYSTEM TURBINE AND MOTOR CONTROL CENTERAND FIRE PROTECTION SYSTEM.SHOULD BE PROVIDED WITH ALL THE LUBRICATION AND COOLING SYSTEMS NEEDED.SYSTEM MUST BE EQUIPPED TO HANDLE THE EXHAUST GAS. FIREPLACE ANDSILENCERS.

SHOULD BE PROVIDED WITH SYNCHRONISM SWITCH IN 13.8 KV.

TRAINING FOR OPERATORS AND MAINTAINERS:

HANDS-ON TRAINING FOR OPERATORS, MAINTAINERS AND SUPERVISORS.EXPERIENCED INSTRUCTORS, USING SPECIAFLY DEVELOPED TRAINING MATERAIS,PROVIDE A FIRM GROUNDWORK OF BASIC THEORY, PLUS ADVANCED CONCEPTS WITHCLASSROOM AND HANDS-ON TRAINING.

SPARE PARTS FOR ONE YEAR OF OPERATION:



Page: 3 of 1

______________________________________________________________________________________


PARTS MUST BE PROVIDED TO ENSURE OPERATION OF THE UNIT UP TO A YEAR.INCLUDES FILTERS, INSTRUMENTATION, ELECTRONIC BOARDS AND EQUIPMENT TOENSURE THE CONTINUOUS OPERATION OF THE UNIT. THE PARTS LIST MUST BEAPPROVED BY PDVSA.


HANDS-ON TRAINING FOR OPERATORS, MAINTAINERS AND SUPERVISORS.EXPERIENCED INSTRUCTORS, USING SPECIAFLY

DEVELOPED TRAINING MATERAIS,PROVIDE A FIRM GROUNDWORK OF BASIC THEORY, PLUS ADVANCED CONCEPTS WITHCLASSROOM AND HANDS-ON TRAINING.

Additional technical specs.TRENT 60 WLE POWER GENERATION PACKAGESCOPE OF SUPPLYSection 1 . Base Scope of SupplyThe base scope of supply for three (3) Trent 60 Dual Fuel WLE Power GenerationPackages, designed inaccordance with the specifications outlined in this contract. These units areavailable for fast delivery basedon configurations that have already been manufactured or are in the final stages ofcompletion and thereforeare not identical. Areas where these units will differ are shown in this scope ofsupply document.Gas TurbineTrent 60 WLE. Rolls-Royce Industrial Trent 60 Gas Turbine with water injection for emissionscontrol.



Page: 4 of 1

______________________________________________________________________________________


. On engine mounted lubrication pump and start motor.

. Gas Turbine ignition system consisting of two on-engine ignitors and off-enginemounted exciter unit.. On-engine mounted gas fuel injection manifolds.AC Generator. Two pole, Open Air Cooled (OAC) AC generator, 13.8kV, 3 phase, 60 Hz, 0.85 powerfactor inaccordance with IEC 34-3 or ANSI C.50-14, fitted with class .F. insulation anddesigned for class .B.temperature rises with a brushless exciter.. AC generator cooling system comprising air filter media, ducting and silencer and agenerator shaftmounted cooling fan.. Details regarding the line and neutral cubicles is as follows:. Both the line and neutral cubicle will be wired in the wye (star) type configuration. Each cubicle customer interface will have 7 conducting cables per phase; each cablewill be 500mm2. The cubicle cable penetration will be bottom entry. Current transformers - The line side cubicle has three sets of three currenttransformers; theneutral side cubicle has four sets of three current transformers. One of thetransformers withineach set can be used for protection of the main transformer that is used to export thepower tothe grid.. Voltage transformers . The line side has three sets of two voltage transformers. The line side cubicle is equipped with lightning protection and located on the sameside as theengine removal.. The Neutral cubicle is located opposite the line side cubicleGas Turbine ModuleEnclosure and Base. Fabricated weatherproof painted carbon steel baseplate mounted enclosure to give anoverall packageacoustic performance of 85dB(A) avg. @ 1 m from the module at an elevation of 1.5 mand base forSCOPE OF SUPPLYRevised Jan 14, 2010 Page 3 of 9 FirmRolls-Royce Data . Private and Confidentialhousing the gas turbine, inlet plenum, fuel and oil systems, exhaust volute andenclosure ventilation airsystems all mounted on a fabricated baseplate. All internal lighting (main andemergency), tubing, pipingand cabling.. Maintenance access and features, facilitating engine / module removal



Page: 5 of 1

______________________________________________________________________________________


(sideways-removal frompackage). Anchor points and any special tooling are provided. Mechanical HandlingSkid, standardwalkways and ladders giving access to the inlet filter house are included.. Fire protection and gas detection system, complete with thermal detectors and gassensors for the gasturbine enclosure.. Two-shot CO2 extinguishing system, storage cylinders provided by EPC Contractor,manifold, firedampers, pipework to nozzles within the gas turbine compartment, warning lamps,lock-offs, interlocksand high temperature cabling. A 100% discharge to extinguish the fire is followed byan additional 100%discharge to suppress re-ignition.. Dry disc flexible coupling shaft including bolts. A separate shaft guard is notrequired as the couplingshaft is protected by the cone arrangement in the exhaust diffuser.Combustion Air System. Self-cleanng (pulsed) combustion air intake filter with first stage coalescersuitable for a non-coastalenvironment up to 40C. R-R recommends accepting the option provided for modificationof the intakefilter as suggested in the pricing option to make the unit coastal environmentcompatible.. Combustion air inlet silencer and ducting, with flexible joints to accommodatethermal movement.. Mounted from the Gas Turbine module, including access door, ladder and internallighting up to thesilencer and filter units.. Maintenance features such as anchor points and permanent tooling (internal filterelement hoist).. Radial air intake scroll with gas turbine compressor water wash supply rings.Gas Turbine Exhaust System. Gas turbine exhaust diffuser exhausting:Unit 1: Left-hand horizontally to the package (when viewing from the Generator lookingtowards the GTIntake).Unit 2: Left-hand horizontally to the package (when viewing from the Generator lookingtowards the GTIntake).Unit 3: Vertical to the package.Gas Turbine Enclosure Ventilation and Air Handling SystemEnclosure Ventilation Intake System. Air is drawn from the same filter house as the combustion air system. A designatedsection of the filterhouse is used to supply air exclusively for ventilation.



Page: 6 of 1

______________________________________________________________________________________


. The system includes ducting, silencing and fire dampers.Enclosure Ventilation Exhaust System. Three 50% duty AC electric motor driven belt driven induced draft ventilation fansthat provide coolingair to allow the unit to operate up to 40C.. Ventilation air exhaust fire dampers, silencer, ducting and weather hood.Gas Turbine Bleed Air. Bleed air exhaust ducting and silencer.SCOPE OF SUPPLYRevised Jan 14, 2010 Page 4 of 9 FirmRolls-Royce Data . Private and ConfidentialGas Turbine Internal Auxiliary Gearbox Cooling Air and Bearing Pressurization AirSystem. Cooling air pipework.Gas Turbine Synthetic Lube Oil System. Gas turbine lube oil system including a stainless steel lube oil reservoir withthermostatically controlledelectric heater, air/oil separator, water cooled mist eliminator, engine driven supplypumps, oil filter,simplex water cooled plate oil cooler, stainless steel pipework and fittings,associated valves andinstrumentation.Gas Turbine Hydraulic Synthetic Control Oil System. Gas turbine hydraulic synthetic control oil system comprising of two 100% duty ACelectric motor drivenvariable displacement pumps, stainless steel tank, oil mist separator, two 100% dutybladder typeaccumulators, oil filter, simplex water cooled plate oil cooler, stainless steelpipework and fittings,associated valves and instrumentation.Gas Turbine Fuel System. Onskid fuel gas supply system, comprising of metering valves, high speed shutoffvalves, gas fuelmanifolds, stainless steel pipe work and fittings, associated valves andinstrumentation.AC Generator ModuleEnclosure and Base. Fabricated weatherproof painted carbon steel baseplate mounted enclosure to give anoverall packageacoustic performance of 85dB(A) avg. @ 1 m from the module at an elevation of 1.5 mand base forhousing the AC generator, cooling air system, exciter and line and neutral cubiclesall mounted on afabricated baseplate.. All internal lighting (main and emergency), maintenance power points, tubing, pipingand cabling.



Page: 7 of 1

______________________________________________________________________________________


AC Generator Mineral Lube Oil System. Lube oil system comprising one (1) shaft driven oil pump, one (1) AC electric motordrivenauxiliary oil pump, one (1) AC electric motor driven jacking oil pump and one (1) DCelectricmotor driven emergency lube oil pump for run down. Oil filters, carbon steel oilreservoir withmist eliminator, vent and thermostatically controlled electric heater, associatedpipework(stainless steel downstream of filters/carbon steel upstream), fittings, valves andinstrumentation. Depending on the generator selected, the system is base mounted or ismounted on a freestanding skid to be located adjacent to the gas turbine module.. Mineral Lube Oil (MLO) module is comprised of an air blast cooling type for unit 1and 2 andplate and frame cooling time for unit 3. The MLO skid cooling is suitable for ambientairtemperature no greater than 40 deg C.Water Wash System. One mobile gas turbine compressor cleaning system, suitable for unfired washing, issupplied per site.Attachment points for the water wash system are externally located on the outside ofthe gas turbinemodule and on the wash cart.Liquid Fuel System. High pressure liquid fuel forwarding system comprising of AC electric motor drivenfixed pump, simplexfilter, stainless steel pipe work and fitting, and associated valves andinstrumentation. This system isfreestanding skid to be located adjacent to the gas turbine module.SCOPE OF SUPPLYRevised Jan 14, 2010 Page 5 of 9 FirmRolls-Royce Data . Private and Confidential. Onskid fuel system including metering valves, high speed shutoff valves, stainlesssteel pipe work andfittings, associated valves and instrumentation. The system is on the GT baseplateinside the enclosure.Water Injection System. Water injection system comprising three (3) x 33% AC electric motor driven fixeddisplacement, bentaxis, axial piston pumps, stainless steel pipework and fittings, associated simplexfilters, valves andinstrumentation. The system is mounted on a freestanding skid to be located adjacentto the gas turbinemodule.Control System. Two (2) Human Machine Interface (HMI) (Primary and Backup) . To be mounted in the



Page: 8 of 1

______________________________________________________________________________________


remote controlroom, shipped loose for installation in the operator.s control room. All controlsystems are accessibleremotely via the HMI system. The HMI will be based on Wonderware.. The following Gas Turbine Control System is included in the Controls Scope ofSupply:- Package Control System (PCS)- Engine Management System (EMS)- Fire and Gas Protection System- Vibration monitoring for all rotating equipment- Temperature monitoring of all rotating equipment. AC Generator Control and Protection Panel (GCPP) comprising a two bay cubicle withautomaticvoltage regulator, AC generator metering and protective relay, automatic and manualsynchronizingfacility, with synchroscope and check synchronizer, free issued for installation byothers.Equipment Testing.. Gas turbine factory test.. AC Generator factory test. Sub-system factory flushing and pressure testing.. Auxiliary motor testing.. Instrument and power cable insulation and continuity tests.. Assembled package checkout test in the factory shop.Documentation. Three sets of Operating Manuals (CD format) in English.. Three sets of Maintenance Manuals (CD format) in English. .. Project drawings and document list per SDRL found in Section B-05. All equipment tags and language used on the equipment will be in the EnglishLanguage.Package Temperature Rating. Minus 20 to plus 40 degrees CSpare Parts. Commissioning Spares for one unit is offered.TRENT 60 WLE POWER GENERATION PACKAGETERMINATION POINTSRevised Jan 14, 2010 Page 6 of 9 FirmRolls-Royce Data . Private and ConfidentialTRENT 60 WLE POWER GENERATION PACKAGETERMINATION POINTSInterface Description Terminal PointsCombustion Air Inlet to intake filter house.Compressed / Instrument Air Compressed air connection at air intake filter house,gas turbine module edge and auxiliary skidsThe outlet from the gas turbine exhaust transitionpiece.



Page: 9 of 1

______________________________________________________________________________________


Ventilation Enclosure vent outlets.Mountings Locations on skid baseplates and all other structuralmembers.Fuel Gas Inlet flange on side of gas turbine module and ventflange on the roof of the gas turbine module.Liquid Fuel (where applicable) Inlet and outlet return connections on liquid fuelforwarding skid and gas turbine module.Water for Gas Turbine Injection Inlet, outlet and return connections on waterinjectionskid and gas turbine module.Lubricants Filling points at oil reservoirs.Drains connections at oil reservoirs.Drains Drains system connections on all modules asnecessary.Grounding Grounding terminals on modules and auxiliary skids.Control and Instrumentation Serial link connection between HMI and gas turbinemodule mounted control panels.GCPP Terminal blocks in control panels and on-skidconnections.At terminal inside the package Motor Control Centerand Uninterruptible Power Supply, both supplied byothers.HV Electric Power(13.8) kVLineside terminals of AC generator.Neutral terminal of AC generatorCoolant Inlet and outlet connections on gas turbine and ACgenerator modules.Compressor Cleaning Filling point of wash tanks.Medium Voltage Electric Power480V ACAt motor terminals inside of the package. Motorsinclude, AC Generator lube oil oil pumps, gas turbinecontrol oil pumps, starting motor, water injection pumpsand enclosure ventilation fans.Low Voltage Power At connections on the gas turbine module, ACGenerator module, CO2 extinguishant skid andauxiliary skids.TRENT 60 POWER GENERATION PACKAGEEXCLUSIONSRevised Jan 14, 2010 Page 7 of 9 FirmRolls-Royce Data . Private and ConfidentialTRENT 60 POWER GENERATION PACKAGEEXCLUSIONSRolls-Royce does not accept responsibility for items or aspects of equipment which areoutside the Scope of



Page: 10 of 1

______________________________________________________________________________________


Supply defined above. The following items are excluded from this proposal, unlessoffered as an option.. Site earthing / grounding. Lightning protection. Compressed air supply and piping. All auxiliary power supplies, batteries and charger / UPS. All first fills. All fuel supplies, fuel supply and treatment. Water supply and treatment. Installation, commissioning, site test labor. Demolition and/or removal of any existing equipment, structures and concrete.. Installation tooling. Instrumentation for site Performance Testing. Site facilities. Fire sprinklers or other fire protection devices which may be required by insuranceregulations.. Motor Control Center. Battery Back Up System. Switchgear. Transformers (Auxiliary & Main). Control system housing, external to gas turbine package enclosure mounted equipment. Enclosure Door Access Ladders / Platforms / Walkways / Stairways and Handrails.. Enclosure Roof Access Ladders / Platforms / Walkways / Stairways and Handrails.. Control System integration with existing DCS. Black Start / Emergency GenSet. Fiscal metering. Site facilities. Operating and strategic spares. Civil engineering design, embedments and works. Grout. Erection of equipment. Long Term Storage. All interconnecting pipework and cabling, beyond termination points, including:- All wiring to and from skids- Piping between externally mounted water forwarding skid and engine baseplate.. Local Lighting. Stack Lighting, Grounding Protection System, emmisions sampling points and CEMS. Transportation beyond location specified in Base Scope of Supply.. Unloading at site. Taxes. Positive Material Identification (PMI) requirements and Third Party Certification.. Any and all permits or special clearances required by any government agency. Thisincludes air pollutionpermits as well as Local building permits, construction permits, etc.. Modification required for coastal environment installationTRENT 60 POWER GENERATION PACKAGE



Page: 11 of 10

______________________________________________________________________________________


EXCLUSIONSRevised Jan 14, 2010 Page 8 of 9 FirmRolls-Royce Data . Private and Confidential. The Equipment is produced to internationally recognized codes and standards.. If the location of the delivered Equipment is subject to any special or local codes,which are in conflictwith these international standards, then Customer shall obtain, with the reasonableassistance of RR,waivers from the relevant authorities to permit the use of the Equipment as supplied.Where such waivercannot be obtained and it is practicable to modify the Equipment to achievecompliance, then RR shallbe granted the appropriate extension of time and variation in price, in order toexecute the modifications.TRENT 60 POWER GENERATION PACKAGECODES AND STANDARDSRevised Jan 14, 2010 Page 9 of 9 FirmRolls-Royce Data . Private and ConfidentialTRENT 60 POWER GENERATION PACKAGECODES AND STANDARDSThe gas turbine, its immediate accessories and the driven equipment are produced tointernationallyrecognized codes and standards. If the location of the delivered Plant is subject toany special, national orlocal codes which are in conflict with these international standards then Customershall obtain, with thereasonable assistance of the Rolls-Royce Power Engineering plc, waivers from therelevant authorities topermit the use of the plant as supplied. Where such waiver cannot be obtained and itis practicable tomodify the plant to achieve compliance then the Customer shall grant the appropriateextension of time andvariation in price in order to execute the modificationsThe following represents the list of Codes and Standards to which the Rolls-Royce hasbeen designed thepackage in accordance with:. 98/37/EC The Supply of Machinery (Safety) Regulations. 97/23/EC Pressure Equipment Directive (PED). 94/9/EC ATEX Directive (Electrical/Mechanical). 89/336/EEC The Electromagnetic Compatibility Regulations. 73/23/EEC Low Voltage Equipment. 93/465/EEC Rules for CE Marking. ASME VIII Div 1 U-Stamped Pressure Vessel. ASME B31.3 and BS EN 13480 Process Piping. ASME B16.5 Pipe Flanges and Fittings. ASME V Non-Destructive Testing



Page: 12 of 10

______________________________________________________________________________________


. ASME 1X/BS EN 25817/PED Welding Piping/Weld Acceptance

. AWS D1.1/BS 5950 Structural Design Fabrication

. Material Traceability Certification to Section 3.1 of EN-10204

. Hazardous Area Classification North America Class 1 Div 2

. Institute of Petroleum Model Code of Safe Practice Part 15

. Fire Codes . NFPA 72 / NFPA 12

. UBC Zone 3 for Seismic load

. Statutory Regulation - R-R is not familiar with the requirements of the Regional andLocal laws,regulations, codes and government injunction applicable to this project. R-R provenpackage is designedutilizing industry proven components and in accordance with API, IEC and otherInternational Standardsand therefore not able to confirm compliance with the local requirements.. R-R standard package design meets wind speeds of 160 kph steady state and 200 kphgust.Revised Jan 14, 2010 Page 1 of 5 FirmRolls-Royce Data . Private and ConfidentialSection A .Revised Jan 14, 2010 Page 2 of 5 FirmRolls-Royce Data . Private and ConfidentialTRENT 60 GENSETSCHEDULEBASESECTION 1 . Base Scope of Supply1. Supply of Three (3) Trent 60 generating set packages consisting of Trent 60WLE . Dual Fuel Turbines, Self-cleanng (pulsed) combustion air intake filter,exhaust volute orientated horizontally, Open air cooled (OAC) AC Alternatorand auxiliaries per the Scope of Supply Section of the proposal.2. Supply of Natural Gas Fuel and Distillate #2 Liquid Fuel Combustion System(Water Injected)3. Supply of Water Injection System for NOx Control4. Supply of motors, heaters, and lighting required for converting package from a50Hz application to a 60Hz application package5. All documentation, drawings, data, brochures, software, etc.6. Installation and Commissioning spares7. Delivery FAS from manufacturer's site to Houston port of ExportFCA MANUFACTURER.S SITE DELIVERY SCHEDULEThe following dates are for delivery dates as applicable to this contract. Under nocircumstance shall anydelivery date be prior to the receipt of a mutually agreed letter of credit, asdefined in section 3.8 of the maincontract. Delivery dates for the package requiring additional field modification for50Hz to 60 Hz conversion ofGenSet package:Item Equipment



Page: 13 of 10

______________________________________________________________________________________


Description Delivery Lead Time Delivery Unit 2 Delivery Unit 31 Main Gas TurbineSkid, Generatorwithout Line Sideand Neutral CubicleMarch 30, 2010 March 30, 2010 March 30, 20102 Gas Turbine See Note 1 See Note 1 See Note 13 Line Side andNeutral cubicle June 30, 2010 June 30, 2010 June 30, 20104 Equipment requiredto be installed for50hz to 60 HzConversionAugust 30, 2010 (SeeNote 2)August 30, 2010(See Note 2)August 30, 2010(See Note 2)Revised Jan 14, 2010 Page 3 of 5 FirmRolls-Royce Data . Private and ConfidentialNote 1 . The gas turbine will be delivered in accordance with the customer.sinstallation andcommissioning schedule need date, not to exceed 60 days from Main Gas Turbine SkidDelivery.Note 2 . Customer will be required to take into consideration appropriate fieldsupport labor andschedule to install equipment shipped to site directly for converting GenSet packagefrom 50Hzto 60Hz application ready.60 HERTZ CONVERSION OF PACKAGE (INSTALLATION AT FACORY OR POST FCADELIVERY DEPENDING ON DELIVERY DATE OPTION SELECTED). 60 hertz compliant materials to be installed by Customer supplied. Scope ofconversion to include, but notlimited to,- Exchange of Air Filter Vent Fans- Exchange of Package Enclosure Lighting- Exchange of UCP Lighting- Exchange of Mineral Oil Heaters & Pump Motors- Exchange of GT Lube Oil Heaters & Pump Motors- Exchange of Liquid Fuel Forwarding Pump Motors- Exchange of Package Heaters- Exchange of F&G CO2 Skid Heaters- Exchange of GT Hydraulic Start Motor. Craft Labor for installation of conversion material to be provided by Customer



Page: 14 of 10

______________________________________________________________________________________


Deliver to:T.W. CLEVELANDTEL 281-588-6460 FAX 281-582-7480

email: [email protected] Code: 77077 PO BOX: 77077______________________________________________________________________________________

00002 3 UNIT,CAPACITY: 60 MW 32.500.000,00 97.500.000,00

Delivery date Day 01.11.2010

Harmonized Tariff Code : 8502391000

Material purchasing textCAPACITY: 60 MW ISO

FUEL: DUAL

MOUNTING TYPE: FIXED.

GENERATOR: SYNCHRONOUS 3P, AIR COOLED, 13.8 KV. 60 HZ.INCLUDE POWER TRANSFORMER 3P 90 MVA 13.8/115 KV

INCLUDE ALL ACCESSORIES AND EQUIPMENT TO CORRECT OPERATION.INCLUDES FILTER HOUSE SYSTEM FILTERS FITTED RETAINERS OF DUST, HIGHEFFICIENCY FILTERS, INERTIAL SEPARATORSAND HOODS RAIN GUARD, CONTROLROOM EQUIPPED WITH ALL THE INSTRUMENTATION SYSTEMS AND PROTECTION UNITINCLUDES VIBRATION MONITORING SYSTEM, TEMPERATURE, PRESSURE AND CONTROLSYSTEM TURBINE AND MOTOR CONTROL CENTERAND FIRE PROTECTION SYSTEM.SHOULD BE PROVIDED WITH ALL THE LUBRICATION AND COOLING SYSTEMS NEEDED.



Page: 15 of 10

______________________________________________________________________________________


SYSTEM MUST BE EQUIPPED TO HANDLE THE EXHAUST GAS. FIREPLACE ANDSILENCERS.

SHOULD BE PROVIDED WITH SYNCHRONISM SWITCH IN 13.8 KV.



SPARE PARTS FOR ONE YEAR OF OPERATION:

PARTS MUST BE PROVIDED TO ENSURE OPERATION OF THE UNIT UP TO A YEAR.INCLUDES FILTERS, INSTRUMENTATION, ELECTRONIC BOARDS AND EQUIPMENT TOENSURE THE CONTINUOUS OPERATION OF THE UNIT. THE PARTS LIST MUST BEAPPROVED BY PDVSA.


HANDS-ON TRAINING FOR OPERATORS, MAINTAINERS AND SUPERVISORS.EXPERIENCED INSTRUCTORS, USING SPECIAFLY



Page: 16 of 10

______________________________________________________________________________________


DEVELOPED TRAINING MATERAIS,PROVIDE A FIRM GROUNDWORK OF BASIC THEORY, PLUS ADVANCED CONCEPTS WITHCLASSROOM AND HANDS-ON TRAINING.


Additional technical specs.

Addendum # 15Scope of Supply and Purchaser's ResponsibilitiesFT8 SWIFTPAC POWER ISLANDEQUIPMENT ONLY BASE BIDDUAL FUEL WITH WATER INJECTION Qty: 3Item Description Notes 710-31332 I. GAS TURBINE POWER ISLAND461 GAS TURBINE PACKAGE 6 P P C12 Gas Generator (GG8-3 Core Engine) P P C14 Power Turbine P P C 3600 RPM Design18 Diffuser P P C20 Collector Box P P C22 Exhaust transition P P C24 Fabricated gas turbine base and mountassemblyP P C26 Coupling connecting power turbine andgenerator



Page: 17 of 10

______________________________________________________________________________________


P P C28 Hydraulic starting motor P P C30 Ignition system P P C32 Off-line compressor internal water wash system P P C Includes piping system,nozzles, valves, etcinternal to the Gas Turbine Enclosure.Excludes Water Wash Skid34 Off-line compressor internal water washsystem with SkidIncludes complete Off-line water washsystem including Skid38 Gas turbine heating system P P C For condensation control44 Lube oil system P P C Combined gas generator & power turbine46 * Single oil-to-air cooler P P C48 * Motor driven pumps P P C two AC and one DC turbine lube oil pumps50 * Stainless steel piping P P C54 Fuel supply system P P CErectionLine No.QuantityDesignSupply 56 * Fuel gas strainer P P C58 * Gas fuel fire valve P P C60 * Liquid fuel fire valve P P C62 * Liquid fuel flowmeter/totalizer P P C66 Buffered air system P P C68 * Single air-to-air cooler P P C70 * Instrumentation for temperature control P P C72 Water injection NOx control system P P C74 * One AC motor driven pump P P C76 Gas turbine enclosure P P C Prime painted80 * Secondary cooling air system with louvers P P C82 * Vents and drains P P C84 * Interior AC/DC lighting P P C86 * CO2 Fire Suppression System P P C CO2 Bottles provided88 * Sound attenuation to meet 85 dB(A) average P P C At 3 feet (one meter)90 * Gas detection system P P C92 Two-stage inlet air filter with weather hood P P C 1st stage prefilter, 2nd stagehigh-efficiencymedia.100 Inlet silencing P P C One inlet section106 Exhaust Stack P P C 30 ft exhaust stack; two exhaust silencingsections.108 * Quick Disconnect Electrical Interface P P C110112 2 HYDRAULIC STARTING PACKAGE 3 P P C Mounted in Generator enclosure.



Page: 18 of 10

______________________________________________________________________________________


114116 3 GENERATOR PACKAGE 3 P P CP = ??????????????C = Customer (??????????)i 40-0110Scope of SupplyPW Rev 0Page 1 of 7DERWICK ASSOCIATES PDVSAItem Description Notes 710-3133ErectionLine No.QuantityDesignSupply120 Brush Open Ventilated Air Cooled SynchronousGenerator or equivalentP P C BDAX 72.290ER; 60 Hz124 Brushless Exciter Assembly P P C With pilot exciter126 Stator Heaters P P C128 Neutral ground transformer/resistor P P C130 Current transformers P P C Quantity 10 per package132 Stator RTD.s P P C Quantity 6 with 6 spares per package134 Vibration probes P P C Proximity136 Bearing drain RTD.s P P C One per bearing138 Bearing metal RTD.s P P C One per bearing140 Hot and cold air RTD.s P P C142 Rotor ground detection P P C144 Lube oil System P P C Air cooled146 * Duplex filters P P C148 * Motor driven pumps P P C Two AC and one DC150 * Stainless steel piping downstream of filters P P C154 Enclosure P P C Prime painted158 * Inlet air filter P P C160 * Inlet and exhaust silencing P P C162 * Interior AC/DC lighting P P C164 * Sound attenuation to 85 dB(A) P P C Inlet and Exhaust silencing166 * Fire detection system P P C170 * Quick Disconnect Electrical Interface P P C172174 4 CONTROL PACKAGE 3 P P C Completely prewired and pretested176 Prefabricated steel enclosure P P C178 * HVAC P P C180 * Fluorescent lighting P P C182 * DC emergency lighting P P C184 * AC power outlets P P C



Page: 19 of 10

______________________________________________________________________________________


186 * Smoke detector P P C190 Operator control cabinet P P C192 * Starting and operating controls P P C Manual and automatic194 * Speed indication P P C196 * Voltmeters P P C Bus and generator198 * Ammeter P P C200 * Wattmeter P P C202 * VAR meter P P C206 * Synchroscope and lamps P P C208 Monitoring cabinet P P C210 * ICE Monitor (CRT, keyboard and software foroperator interface)P P C212 * Printer P P C214 Instrument Cabinet P P C216 * Automatic voltage regulator (AVR) P P C Main and standby channels (2)218 * Digital synchronizer P P C220 * Vibration monitor P P C Gas turbine and generator222 * Fire protection system power supplies P P C224 * Static inverter P P C226 Unit control cabinet .Engine A. P P C228 * Control system for automatic starting, running,loading, unloading and shutdown of the unit.P P C230 * Timer Panel P P C232 * Expansion chassis P P C234 Unit control cabinet . Engine B. P P C236 * Timer panel P P C238 * Expansion chassis P P C240 Generator protective relay panel P P C BeckwithP = ??????????????C = Customer (P????????)i 40-0110Scope of SupplyPW Rev 0Page 2 of 7DERWICK ASSOCIATES PDVSAItem Description Notes 710-3133ErectionLine No.QuantityDesignSupply242 * Generator protective relays P P C244 * Lockout relays P P C246 * Watt hour meter P P C



Page: 20 of 10

______________________________________________________________________________________


248 Motor Control Center P P C250 * AC and DC distribution panels P P C252 * Motor starters P P C254 * Distribution transformer P P C256 * Breakers as required P P C260 * Automatic transfer switch P P C To accommodate a Black Start DieselGenerator or alternate Emergency Feed262 Master terminal cabinet P P C264 * Field termination blocks P P C266 * Power supplies P P C268 Ventilated cubicle with rack mounted lead acidbatteriesP P C 24 VDC and 125 VDC270 Battery chargers P P C272 Switchgear module 15 kV Class P P C274 * Metalclad switchgear compartment P P C Mounted in control enclosure278 * Circuit breaker P P C 4000 Amp/ 750 MVA, 15kV class Totallyenclosed, 15kV class, 4000 Amp284 * Non-segregated insulated 3 phase bus duct P P C286 * Lightning arresters and surge capacitors P P C288 * Current transformers and potential transformer P P C290 * CTG Auxiliary transformer P P C294 Networked Remote Control System On-Site P P C For Monitoring and Control from aNetworkedOn-site Location300 Synchronous Condensing Capability P P C302 * Quick Disconnect Electrical Interface P P C304306 5 INSTALLATION HARDWARE310 Interconnecting piping for hydraulic start and P P C Between PWPS supplied skidsand CTG onlywater injection316 Foundation embedded material C C C Includes all anchor bolts, shims and plates,and grout for PWPS supplied equipment.318 Interconnecting electrical cables P P C Between PWPS supplied skids and CTG320322 6 STARTUP AND COMMISSIONING SPAREPARTS AND CONSUMABLESP P For PWPS Scope of Supply324326 II.328330 Technical Representatives to advise CustomerSupervisory Personnel during FT8 equipmenterection checkout, and startupP Field Service support description can found in



Page: 21 of 10

______________________________________________________________________________________


the PWPS "Project Management andCustomer Support" document.332 Instruction Manuals and Plant Documentationprovided: Construction Manual, CommissioningManual & Sign-off Sheets, Picture Book, PWPSDrawing Package, Vendor Manuals & Drawings,FT8 Maintenance Manual, FT8 Illustrated PartsCatalog, FT8 Service Bulletins, TWINPACOperating Instructions, Bill of Material, As BuiltDrawings.P Provided as one CD or alternate electronicformat for PWPS SupplyADDITIONAL RESPONSIBILITIES DURINGCONSTRUCTION AND START-UPP = ??????????????C = Customer (P????????)i 40-0110Scope of SupplyPW Rev 0Page 3 of 7DERWICK ASSOCIATES PDVSAItem Description Notes 710-3133ErectionLine No.QuantityDesignSupply334 PWPS training .Power Plant Operators Course.???????????????????????????????????????? customer training on site. Trainingdescription can be found in the PWPSCustomer Training Document version 21-0802. Travel and lodging for customer'spersonnel not included.336 Performance Testing P The customer is responsible for providing allnecessary support to install, calibrate, andremove all temporary and plantinstrumentation/equipment necessary forperforming the acceptance test. PWPSprovides technical support and manages thetest plan for this work.340 III. Owner is responsible for compliance withPWPS' operating, installation, andmaintenance instructions.342344 1 SITE DEVELOPMENT C C C Owner is responsible for all areas of sitedevelopment and are not limited to the items



Page: 22 of 10

______________________________________________________________________________________


listed in this document.346 Adequate Title and Interest, Permanent FacilityPermits, Construction Permits and LicensingC To permit the installation of such units andtheir operation for at least the periodcontemplated by the contract. ProvidePWPS representatives unrestricted access atall times as may be reasonably necessary inthe performance of their duties.348 Sub-Soil Investigation & Report C C C Minimum sub-foundation bearing capacity of2500 psf (120 kPa) and limits differentialsettlement of the main foundations equal to orless than 0.0005 times the foundation length.PROJECT DEVELOPMENT AND OWNER'SRESPONSIBILITIES350 Foundations for all Equipment C C C PWPS will provide Loading Diagrams forPWPS supplied equipment.353 Power Island Grounding C C C Per TPM130354 Provision of Secure Field Office. Furnishedwith electricity, Heating and Air Conditioning,Drinking Water, Desks, Chairs, Parking Area,Lockers and others which are necessary forField Works, Services & Sanitary Facilities ofOffice Personnel.C C C Including 10' x 40' (3 m x 12 m) area for afield office. This field office shall be able toaccommodate 6 - 8 PWPS individuals.355 SAFETY PROVISION, Provide a safe workingenvironment that meets or exceeds internationalstandards including: OSHA, and all applicablelocal, regional, and national standard andregulations.C C C If at any time PWPS personnel and subcontractorsdo not feel safe they may leavesite.356 Provision of First Aid and Medical Services -OSHA ApprovedC C C358 Provisions of Local Communication Facilities C C C Including radio, telephone(local and longdistance) with international direct dialing andfax machine. This should be a minimum of 3lines in the PWPS field office. A separatededicated T1 line or phone line shall beprovided to each turbine control system in thecontrol house.



Page: 23 of 10

______________________________________________________________________________________


P = ??????????????C = Customer (P????????)i 40-0110Scope of SupplyPW Rev 0Page 4 of 7DERWICK ASSOCIATES PDVSAItem Description Notes 710-3133ErectionLine No.QuantityDesignSupply360 Temporary Construction Staging & SecureInventory AreaC A minimum area of approximately 115. by136. is recommended per Power Island. Aminimum of two shelved conex boxes andone non shelved or enclosed equivalent perSWIFTPAC prior to delivery of equipment.362 Access Road(s), Interior Roads, and ParkingAreasC C C All-weather and unobstructed364 Transmission System C C C366368 2 ENGINEERING AND CONSTRUCTION370 Plant Engineering C372 All Labor for complete off-loading, Inventory,Inventory control, Storage, Erection, Installation,Checkout, Testing, and Start-up of all PWPSand non-PWPS supplied equipment andmaterial.C374 Maintaining and Guarding all Facilities,Equipment, and Materials during constructionC Including security fence376 Site Organization During Construction C Including Resident Field ConstructionManager; Supervision & Manpower forErection Works, Checkout, Trouble Shooting,Start-up & Commissioning, Test Operation &Trial Operation, Plant Start-Up Engineering378 Emissions and Acoustic Testing C380 Worker's Compensation, Employer's Liability, orany other Local Insurance RequiredC PWPS will cover all PWPS personnel.382 Consumable Material for Erection Works C As required



Page: 24 of 10

______________________________________________________________________________________


384 Construction Equipment, Tools and Aids C Including but not limited to thefollowing:Cement Mixers, Loaders, Trucks, Cranes ofvarying capacities, Power Generators, AirCompressors, Welders, Drilling Equipment,Pipe Working Facilities & all hand toolsrequired for expeditiously and competentlycompleting all phases of the work under thecontract.386 Required Tests Prior to Startup:Including but not limited to:C388 * Resistance ratio and polarity tests C Generator and Transformer CTs and PTs390 * All high voltage dielectric tests* Field check and calibration *Protective Relay CalibrationC All PWPS supplied protective relays andcircuits. The PWPS Commissioning andcheckout manual further clarifies theCustomers responsibilities.392 Phasing and Synchronizing the Generator toPurchaser.s systemC394396 3 POWER ISLAND INTERFACES398 BOP Motor Control Centers C400 Control System Interface C Customer is responsible for allinterconnectinghardware, software anddocumentation for all BOP I/O communicationand control.402 Natural Gas for Start-up, Testing and Operation445 psig (30 bar), Approximately 4700 scfm (2.2m3/sec) per gas turbineC Interface Point: Flange on PWPS PowerIsland. Per PWPS Natural Gas FuelSpecification FR-2. Fuel to be tested by acertified lab and the results provided toPWPS prior to start-up.P = ??????????????C = Customer (P????????)i 40-0110Scope of SupplyPW Rev 0Page 5 of 7DERWICK ASSOCIATES PDVSAItem Description Notes 710-3133



Page: 25 of 10

______________________________________________________________________________________


ErectionLine No.QuantityDesignSupply406 Liquid Fuel for Start-up Testing, and Operation30-75 psig (2.0-5.1 bar), Approximately 36 gpm(136 l/min) per gas turbineC Interface Point: Flange on PWPS PowerIsland. Per PWPS Liquid Fuel SpecificationFR-1. Fuel to be tested by a certified lab andthe results provided to PWPS prior to startup.408 Injection Water for NOx Control 5-50 psig (0.3-3.4 bar), Approximately 25 gpm (115 liters/min)per gas turbineC Interface Point: Flange on PWPS PowerIsland. Per PWPS Specification AR-1.Water to be tested by a certified lab and theresults provided to PWPS prior to start-up.410 Potable Water for Gas Turbine Off-line WaterWash 50 psig (3.4 bar) min., Approximately 300gallons (1150 liters) per gas turbine water washat 110 gpm (415 liters/m)C Interface Point: Flange on PWPS PowerIsland. Per PWPS Potable Water QualitySpecification414 Instrumentation Air. 75 CFM Free, Dry Air at 70psig (90 psig max)C Interface Point: Flange on PWPS PowerIsland.415 Vent and Drain. Maximum flow on Oily Wastedrain is 35 GPM for water wash.C Interface Point: Connections on PWPSPower Island.416 High Voltage Power C Interface Point: Generator Terminals.418 Backfed Electrical Power Supply 255 kW perPower Island, 13.8kV, 60 Hz, 3 phase forlighting, heating and intermittent auxiliariesC Plus as required for BOP loads420 Construction Power-Including distribution to thePWPS supplied equipmentC 480 V, 3 phase, 24 hours per day to electricgenerator upon arrival of the generator.Reliable temporary 480 V, 400 Amps powerat the control house for checkout and start-upat least 21 days prior to the first fire date of



Page: 26 of 10

______________________________________________________________________________________


the first unit to be commissioned.422424 4 OTHER OWNER RESPONSIBILITIES The following list of items is provided for yourconvenience and gives examples of the typesof equipment and/or services that are outsidethe PWPS Scope of work, and if required, arethe sole responsibility of the Owner.426 Site Survey/Plot Plan C C C428 Excavation for Foundations, Pipes, Roads,Cabling & Grounding GridC C C430 Site Leveling C C C432 Backfill C C C434 Finish Grading C C C438 Surface Drainage to and including anyCollection PondC C C440 Oily Water Separator C C C442 Sanitary Waste Disposal C C C444 BOP and Plant Fire Protection Systems-Hydrants Panels and ExtinguishersC Including Fire Protection during construction446 Plant Lighting C448 Intra-communication system C450 Site Fencing and Gates C452 Construction Water C454 Builder's All Risk Insurance (BAR) C456458460 IV.462468OPTIONSP = ??????????????C = Customer (P??????????i 40-0110Scope of SupplyPW Rev 0Page 6 of 7DERWICK ASSOCIATES PDVSAPWPS 60hz 1 Rev 12-0609FT8 SWIFTPAC UNIT EQUIPMENTDESCRIPTION . 60HZDERWICK ASSOCIATES, S.A.MMG TOWER Piso 16 Calle 53, Urb. Marbella Ciudad de Panana, PanamaPWPS 60hz 2 Rev 12-0609



Page: 27 of 10

______________________________________________________________________________________


Table of Contents1.Introduction.........................................................................................................................42. GasTurbine.........................................................................................................................42.1. GasGenerator...............................................................................................................42.1.1. Inlet Case Group................................................

...................................................52.1.2. Low PressureCompressor....................................................................................52.1.3. High Pressure Compressor...................................................................................62.1.4. Diffuser Group..................................................

.....................................................62.1.5. Combustion Section..............................................

................................................62.1.6. Turbine Nozzle Group............................................

...............................................72.1.7. High Pressure Turbine...........................................

...............................................72.1.8. Low Pressure Turbine............................................

...............................................82.1.9. Turbine ExhaustCase...........................................................................................82.1.10. Bearings.......................................................

.........................................................92.2. Power Turbine.....................................................

........................................................102.2.1. InletSection.........................................................................................................102.2.2. Turbine Case and Vane



Page: 28 of 10

______________________________________________________________________________________


Assembly......................................................................112.2.3. Rotor Assembly..................................................

.................................................112.2.4. Exhaust Case Section............................................

.............................................122.2.5. Diffuser and Turning Vane Assembly..................................................................122.2.6. Output DriveShaft...............................................................................................132.3. Collector Box.....................................................

..........................................................132.4.Mounts.........................................................................................................................132.5. Cooling Air and Thrust BalanceSystem......................................................................132.6. Bearings..........................................................

............................................................143. AncillarySystems..............................................................................................................143.1. Lubrication/Hydraulic Control.....................................

.................................................143.2. Gas Fuel System (whenspecified)..............................................................................153.3. Liquid Fuel System (whenspecified)...........................................................................153.4. Dual Fuel System (whenspecified).............................................................................163.5. Water Injection System (when specified)....................................................................163.6. Starting System...................................................

........................................................163.7. Fire Protection System............................................

....................................................17



Page: 29 of 10

______________________________________________________________________________________


3.8. Gas DetectionSystem.................................................................................................183.9. Engine Heating (Dehumidification)System.................................................................183.10. Offline Water Wash System........................................

................................................184. ElectricGenerator..............................................................................................................194.1.Stator..........................................................................................................................194.2.Rotor...........................................................................................................................204.3. Bearings................................................................

......................................................204.4.Ventilation....................................................................................................................204.5.Lubrication...................................................................................................................204.6. Excitation Systems................................................

......................................................204.7. VoltageRegulator........................................................................................................204.8. GeneratorData............................................................................................................214.8.1. Manufacturer....................................................

...................................................214.8.2. Type............................................................

........................................................21DERWICK ASSOCIATES, S.A.MMG TOWER Piso 16 Calle 53, Urb. Marbella Ciudad de Panana, PanamaPWPS 60hz 3 Rev 12-06095. Electrical Control Center Enclosure................................................................................22



Page: 30 of 10

______________________________________________________________________________________


5.1. Monitoring Cabinet (Main OperatorInterface).............................................................235.2. OperatorCabinet.........................................................................................................245.3. Panel Back Wall Devices (Not Shown).......................................................................245.4. Protective RelayCabinet.............................................................................................255.5. Panel Back Wall Devices (Not Shown).......................................................................255.6. Instrument Cabinet................................................

......................................................265.7. Master Terminal Boards............................................

..................................................275.8. Motor Control Center (MCC)........................................

...............................................275.9. DC Power Supply...................................................

.....................................................275.10. 15 kV Class, Metal-Clad Switchgear Module..............................................................286. Control System......................................................

............................................................286.1. Integrated Gas Turbine and Unit Control....................................................................286.2. MonitoringSystem.......................................................................................................307. Gas Turbine Enclosure...............................................

......................................................307.1. Gas Turbine Enclosure Secondary Air System...........................................................307.2. Inlet Air Filtration..............................................

...........................................................317.3. Inlet Air Silencer (when specified)...............................................................................327.4. Exhaust Silencer (when specified).............................................................................32



Page: 31 of 10

______________________________________________________________________________________


8. Estimated SWIFTPAC Weights and Sizes.......................................................................349. List of Typical Suppliers...........................................

........................................................35DERWICK ASSOCIATES, S.A.MMG TOWER Piso 16 Calle 53, Urb. Marbella Ciudad de Panana, PanamaPWPS 60hz 4 Rev 12-06091. IntroductionThe FT8 SWIFTPAC Unit configurations are completely self-contained; gas turbinepoweredelectric generating units containing all the equipment necessary for local automaticoperation.The configuration consists of four (4) primary units . two (2) gas turbines units, theelectricgenerator unit, and the electrical/control unit. The SWIFTPAC turbine and generatorunitsconsist of two opposed Industrial Gas Turbines directly connected through a diaphragmcoupling to a single double-ended electric generator.The SWIFTPAC power plants are designed to provide quick, reliable power. The plug andplaypackaging allows for reduced site setup time by delivering factory-assembled modules,quickdisconnect cables and prefabricated field piping. Factory flushing and checkout isused whereever possible.The electrical/control unit includes the 15 kV switchgear and all of the controls andinstrumentsnecessary for operation. The 15 kV switchgear is connected to the generator byprefabricated,totally enclosed, weatherproof, 15 kV class bus duct. The turbine/generator andelectricalcontrol units are housed in all weather, prime-painted steel enclosures includinglighting andelectrical services. Fire protection equipment is provided in the gas turbineenclosure.The generating plant, as erected on a site, is ready for connection to the Customer.sdistributionsystem and water and fuel supply systems. The package concept of these type of powerplants,coupled with their relatively small size, allow them to be readily installed in almostany locationand conveniently relocated or combined with other units, or other equipment such aswaste heatboilers, to meet changing load requirements.2. Gas Turbine



Page: 32 of 10

______________________________________________________________________________________


The FT8 Industrial Gas Turbine consists of a GG8 gas generator and a PT8 power turbine(alsoreferred to as a "free" turbine). The gas generator provides high energy gas to thepowerturbine, where this gas performs useful work when mechanically coupled to a drivenloadthrough a flexible coupling.2.1. Gas GeneratorThe GG8 gas generator is based on the latest version of Pratt & Whitney's JT8D turbofanaero engine, the JT8D-219. The JT8D is the most often used engine in the world'scommercial aircraft fleet with more than 14,000 units accumulating over 400 millionoperatinghours. The JT8D aero engine provides a total compression ratio of 20:1 and a thrustrating of21,700 lbs. utilizing dual spool compressors and turbines.The GG8 gas generator is an axial flow, gas turbine engine. The major components aretwocompressor modules, a combustion section, and two turbine modules. Inlet air passesthrough the low compressor and is then further compressed through the high compressor.The high pressure air is then diffused to a low mach number where it enters a largeplenumconsisting of nine fuel nozzles and combustion cans. Most of the air enters thecombustioncans through the fuel nozzles and through the combustion can walls, which also coolsthecombustion chamber walls.DERWICK ASSOCIATES, S.A.MMG TOWER Piso 16 Calle 53, Urb. Marbella Ciudad de Panana, PanamaPWPS 60hz 5 Rev 12-0609A small portion of the air bypasses the combustion cans and is used to cool theturbinesection. Two independent spark ignitors provide ignition for starting. Thereafter,combustion isself-sustaining. The hot gases pass through the single-stage high pressure turbine andthetwo-stage low pressure turbine, which extract energy to drive the two (2) compressorsections. The remainder of the hot gas energy is used for driving the power turbine.Controlling the flow of fuel to the combustion chambers regulates the output of hotgases.The GG8 gas generator uses modulated cooling air to the Low Pressure Turbine (LPT) tomaintain optimum clearances throughout the operating profile of the machine. Thissystemincludes cooling air valves on the gas generator that are controlled by signals fromtheelectronic engine control.



Page: 33 of 10

______________________________________________________________________________________


Figure 1: Major sections of the Gas Generator2.1.1. Inlet Case GroupThis group includes the inlet case, Number 1 bearing, and the Number 1 bearinghousing.The case incorporates variable inlet guide vanes for directing air into the LowPressureCompressor (LPC). The case also provides support for the Number 1 bearing. The frontaccessory drive houses the NL speed sensors.2.1.2. Low Pressure CompressorIn the GG8 LPC the fan stage used in the JT8D is replaced with three boostercompressorstages at the GG8 inlet. The inlet guide vanes plus the first two stages have beenfitted withvariable geometry. Variable vane movement provides optimum efficiency for thecompressor in the complete speed range, and excellent part-load efficiency.The LPC has 8 blade stages and 7 stator vane stages. The first two stator vane stagesare

variable. The LPC gas path is connected to the High Pressure Compressor (HPC) by theintermediate case. The intermediate case also provides a structural connection betweenthetwo compressor sections, provides support for the Number 2 and Number 3 bearings, istheDERWICK ASSOCIATES, S.A.MMG TOWER Piso 16 Calle 53, Urb. Marbella Ciudad de Panana, PanamaPWPS 60hz 6 Rev 12-0609location of the gas generator front mounts and is the stator vane stage for the lastlowcompressor blade stage.The LPC rotor is physically connected to the LPT rotor by a shaft that passes throughtheHPC and turbine.Figure 2: Gas Generator Cold Section Groups2.1.3. High Pressure CompressorThe HPC consists of seven blade stages and seven stator vane stages, and is driven bytheHigh Pressure Turbine (HPT) through a connecting shaft. The HPC operates at a higherrotational speed than the LPC. The gearbox, attached to the intermediate case, isdriventhrough gearing from the front of the HPC section.2.1.4. Diffuser GroupThe diffuser case houses the Number 4 bearing that support the HPC rotor. The casealsohouses the nine fuel nozzle and support assemblies that provide fuel to the combustionchambers. The flow path of the diffuser case reduces the velocity and increases thestaticpressure of the compressed air before entering the combustion chambers.



Page: 34 of 10

______________________________________________________________________________________


2.1.5. Combustion SectionThe combustion section has nine chambers arranged in an annulus around the turbineshafts and positioned between the HPC and the HPT. The combustion chambers areenclosed by inner and outer cases. The outer case can be unbolted and moved rearwardtoallow for inspection or removal of the combustion chambers and fuel nozzles.Combustion chambers Nos. 4 and 7 each accommodate an igniter plug. During initialignition, flame is propagated from these two chambers to the remaining chambersthroughintegral flame crossover tubes, which interconnect all nine chambers.FRONT ACCESSORYDRIVE COMPRESSORINLETLOW PRESSUREINTERMEDIATE CASEMAIN ACCESSORYGEARBOXHIGH PRESSUREDIFFUSERCASECOMPRESSOR (LPC)COMPRESSOR (HPC)DERWICK ASSOCIATES, S.A.MMG TOWER Piso 16 Calle 53, Urb. Marbella Ciudad de Panana, PanamaPWPS 60hz 7 Rev 12-0609The combustion chambers and nozzles were modified to allow liquid fuel, gaseous fuel,or

both simultaneously. Water injection can also be utilized with these combinations. Thecombustion chamber outlet duct consists of inner and outer annular burner liners witha

front bulkhead for support of the nine cans. This outlet duct directs the hot air tothe highturbine nozzle guide vanes.2.1.6. Turbine Nozzle GroupThis group includes the turbine inlet nozzle guide vanes that direct the hot gas flowfrom thecombustion chambers to the HPT blades. Parts in this group also provide support fortheoutlet end of the combustion chambers.The inner support for the nozzle guide vanes includes the tangential on-boardinjection(TOBI) system which provides 13th stage compressor air for cooling of the HPT bladesandattachments.2.1.7. High Pressure TurbineThe HPT is a single stage turbine with shroudless, air-cooled turbine blades. The HPT



Page: 35 of 10

______________________________________________________________________________________


issupported by the Number 5 bearing. The HPT is physically connected to the HPC by theHPT shaft. The turbine blades are cooled by 13th stage compressor air that flowsthroughpassages within each blade. Air from the TOBI duct enters the blades at the rootattachment area after passing through passages at the front of the 1st stage turbinerotor.The HPT converts thermal and kinetic energy from the gas path into shaft horsepower todrive the HPC.Figure 3: GG8 Hot Section GroupsCOMBUSTION ANDNO. 5 BEARINGSECTIONTURBINE NOZZLECASEHIGH PRESSURETURBINE (HPT)LOW PRESSURETURBINE SHAFTLOW PRESSURETURBINE (LPT)EXHAUST CASEDERWICK ASSOCIATES, S.A.MMG TOWER Piso 16 Calle 53, Urb. Marbella Ciudad de Panana, PanamaPWPS 60hz 8 Rev 12-06092.1.8. Low Pressure TurbineThe LPT has two turbine rotor stages and two stages of turbine vanes. The front bladeandvane rows are air cooled, and both blade rows utilize shrouded tips. These turbinestagesuse tip shrouded blades. The last stage vanes are clustered. Each vane clusterconsists ofthree vane airfoils. The LPT shaft connects to the LPC. The LPT converts kineticenergyfrom the gas path into shaft horsepower to drive the LPC.2.1.9. Turbine Exhaust CaseThe Turbine Exhaust Case (TEC) forms the discharge path for the exhaust gas flow intothepower turbine. The case also provides physical connection to the power turbine andhousesthe Number 6 bearing, which supports the rear of the LPT rotor.Pressure oil supplied to the TEC provides lubrication for the Number 6 bearing and fortheNumber 4 bearing.DERWICK ASSOCIATES, S.A.MMG TOWER Piso 16 Calle 53, Urb. Marbella Ciudad de Panana, Panama



Page: 36 of 10

______________________________________________________________________________________


PWPS 60hz 9 Rev 12-06092.1.10. BearingsThe FT8 lube oil system is a combined system, containing the gas generator lube oilsystem and the power turbine lube oil system, together with necessary filters, cooler,andreservoir.Anti-friction ball and roller bearings are used throughout the gas turbine since theyabsorbabout 50% less power than sleeve or hydrodynamic bearings and require a less expensiveand less complex lubrication system. They can also withstand intermittent losses oflubricant flow for time periods that would be catastrophic to sleeve bearings. Mainbearingscarry the radial and axial thrust loads of the rotors.Figure 4: Gas Generator Bearing LocationsBearing Type Support ForNo. 1 Oil damped roller Front of LPCNo. 2 Ball Rear of LPCNo. 3 Ball Front of HPCNo. 4 Duplex Ball Rear of HPCNo. 4 Roller midNo. 5 Oil damped roller HPTNo. 6 Oil damped roller LPTThe oil damped bearings have a layer of pressurized oil around the bearing outerdiameterto absorb rotor-induced vibration during engine operation.DERWICK ASSOCIATES, S.A.MMG TOWER Piso 16 Calle 53, Urb. Marbella Ciudad de Panana, PanamaPWPS 60hz 10 Rev 12-06092.2. Power TurbineThe power turbine consists of an annular, transition duct connected to the gasgenerator; asingle four-stage, axial flow, reaction turbine; and an exhaust casing consisting ofexit guidevanes and rear bearing support that connects to the diffuser section and an exhaustcollector.The power turbine is supported by two anti-friction roller-type journal bearings andone balltypethrust bearing.The turbines can rotate in either direction allowing for a SWIFTPAC configuration. Asexpected, the SWIFTPAC configuration has twice the power capacity of POWERPACconfiguration. In SWIFTPAC configurations, the generator is driven from both sides.The power turbine converts the thermal and kinetic energy of the gas generator exhaustinto arotational force. This force is transmitted to the driven equipment via two flexiblecouplingsand drive shaft.



Page: 37 of 10

______________________________________________________________________________________


2.2.1. Inlet SectionThe inlet case and inner and outer ducts of the power turbine form an annulus, whichdirects the gas generator hot gas exhausts to the power turbine. The inlet case, theonlypower turbine part physically attached to the gas generator, carries the structuralload of thegas generator to the power turbine supports. The shaded section of the followingfiguredepicts the inlet section.Figure 5: Inlet SectionDERWICK ASSOCIATES, S.A.MMG TOWER Piso 16 Calle 53, Urb. Marbella Ciudad de Panana, PanamaPWPS 60hz 11 Rev 12-06092.2.2. Turbine Case and Vane AssemblyThe vanes direct the hot gases to the turbine blades at the proper angle for maximumrotorefficiency. They form an assembly with the split turbine case. The shaded section inthefollowing figure depicts the turbine case and vane assembly.Figure 6: Turbine Case and Vane2.2.3. Rotor AssemblyThe power turbine rotor is composed of a four-stage disk and blade assembly, supportedbyanti-friction bearings on each end. The hot gases directed against the blades turn therotor,creating the mechanical energy to drive the output shaft. The shaded section in thefollowing figure depicts the rotor assembly.Figure 7: Rotor AssemblyDERWICK ASSOCIATES, S.A.MMG TOWER Piso 16 Calle 53, Urb. Marbella Ciudad de Panana, PanamaPWPS 60hz 12 Rev 12-06092.2.4. Exhaust Case SectionThe exhaust case section turns the exhaust gases via exit guide vanes to axial flowbeforeentering the diffuser section. The case structure supports the rear bearings and rearenginemounts. The shaded area in the figure below depicts the exhaust case section.Figure 8: Exhaust Case Section2.2.5. Diffuser and Turning Vane AssemblyThe diffuser and turning vane assembly reduces the velocity and increases the staticpressure of the exhaust gas flow. The diffuser directs the gas flow from the powerturbinethrough a conical annulus surrounding the power turbine shaft. The conical annulusends inthree annular, flared exit baffles, the diffuser turning vanes. The vanes redirect thegas flow



Page: 38 of 10

______________________________________________________________________________________


90 degrees from all circumferential locations into the collector box for exhaust, insimplecycle configurations, to the stack acoustical system and then to the atmosphere. Incombined cycle configurations, the gas flow would be exhausted to the heat recoverysteamgenerator inlet ducting rather than the stack acoustical system. The diffuser andturningvane design permits the smoothest possible movement of exhaust gas through the exhaustsystem, minimizing backpressure and maximizing efficiency.DERWICK ASSOCIATES, S.A.MMG TOWER Piso 16 Calle 53, Urb. Marbella Ciudad de Panana, PanamaPWPS 60hz 13 Rev 12-06092.2.6. Output Drive ShaftThe output drive shaft extends through a cavity in the exhaust diffuser, and exitsthroughthe rear of the collector box. It transmits mechanical energy to the driven equipment(suchas an electrical generator). The front of the shaft is connected to the rotor with aflexiblecoupling. The rear of the shaft is connected to the driven equipment with a flexiblecoupling. The output drive shaft is shaded in the figure below.Figure 9: Output Drive Shaft2.3. Collector BoxThe collector is suspended from the exhaust enclosure. It receives exhaust gases fromthediffuser and turning vanes. The gases are then exhausted through the silencer sectionsto theatmosphere, or through an optional heat recovery system.2.4. MountsThe mounts, located at the 3 and 9 o'clock positions on the power turbine exhaustcase,

provide the rear support for the gas generator/power turbine system. The mounts areadjustable vertically and horizontally. There is also a bottom mount pin, whichpositions thegas generator/power turbine system in the axial and lateral directions. This allowsradialthermal growth.2.5. Cooling Air and Thrust Balance SystemOne cooling air tube from the gas generator HPC case and two tubes from the LPTexhaustcase provide thrust balance and cooling air to the power turbine. The two tubes fromthe LPTprovide cooling air to the first stage disk and blade attachment as well as providingcooling airto the No. 7 bearing support and first vane attachment. The air tube from the HPCprovides



Page: 39 of 10

______________________________________________________________________________________


thrust balancing air to the backside of the rotor to offset the gas path air loads andalsoprovides cooling air to the rotor bore and stages 2-4 disk and blade attachments. Thisair isalso providing cool buffer air to the Nos. 7, 8 and 9 bearing compartment seals.DERWICK ASSOCIATES, S.A.MMG TOWER Piso 16 Calle 53, Urb. Marbella Ciudad de Panana, PanamaPWPS 60hz 14 Rev 12-06092.6. BearingsBearing Type Support ForNo. 7 Roller Front of rotorNo. 8 Ball Rotor (axially)No. 9 Roller Rear of rotor3. Ancillary Systems3.1. Lubrication/Hydraulic ControlThe FT8 lube oil system is a combined system, containing the gas generator lube oilsystemand the power turbine lube oil system. Components not integral to the gas turbine aremounted as a pre-engineered package inside the GT enclosure. This package contains thecombined reservoir, duplex filters, chip detectors, air-to-oil cooler, and the powerturbinesupply and scavenger pumps.The gas generator (GG)supply and return lines terminate at the accessory drive enginemounted gearbox. Since both the GG supply and scavenge pumps are hard coupled to thelow-pressure and high-pressure compressor shafts, positive pressures are generated byshaftrotation. This system also supplies oil to the hydraulic control system pump suctionport . Thegearbox driven hydraulic high pressure pump and servo valve supply control oil to theIGV/VSV compressor actuators.The power turbine lube oil system lubricates and cools the main bearings and bearingsealassemblies. Lubrication is provided by identical three-element pumps, which provideprimaryand auxiliary flow functions. The primary and auxiliary pumps are AC motor drivenwhile theemergency pump is a DC motor driven.. The auxiliary pump automatically starts in caseoftrouble with the primary pump. The DC pump is used for emergency shutdown when ACpower is lost.DERWICK ASSOCIATES, S.A.MMG TOWER Piso 16 Calle 53, Urb. Marbella Ciudad de Panana, PanamaPWPS 60hz 15 Rev 12-06093.2. Gas Fuel System (when specified)Customer supplied fuel per PWPS FR-2 Gas Fuel Specification is delivered at a minimumof



Page: 40 of 10

______________________________________________________________________________________


475 psig (32.8 bars). First, the gas flows through a fire valve. Next, the gas flowsthrough asimplex particulate filter, coriolis flowmeter , pressure safety valve to the fuelplate located onthe GT base assembly. Gas flows through two shutoff valves and the modulating valve tothegas manifold, where it is injected through the nine gas fuel nozzles. The modulatingvalvemeters fuel in response to signals from the electronic gas turbine control. Seespecific P&IDfor all system components.Figure 10: Gas Fuel System3.3. Liquid Fuel System (when specified)In the liquid system, fuel per PWPS FR-1, Liquid Fuel Specification in a floodedsuction linefrom the fuel storage tanks is pumped by the Customer supplied fuel forwarding systemto thePWPS filtering and metering skid which contains a duplex particulate filter and acoriolismeter to a downstream fire stop valve. Next, the fuel is boosted by the gas generatorgearboxmounted fuel pump, and sent to the metering valve with an integral shutoff valve. Themetering valve meters fuel in response to a signal from the electronic gas turbinecontrol.The fuel then flows through another fuel shutoff valves and an engine mounted flowdividervalve, into the manifold and through the nine liquid fuel nozzles. See specific P&IDfor allsystem components.Figure 11: Liquid Fuel SystemDERWICK ASSOCIATES, S.A.MMG TOWER Piso 16 Calle 53, Urb. Marbella Ciudad de Panana, PanamaPWPS 60hz 16 Rev 12-06093.4. Dual Fuel System (when specified)The dual fuel system utilizes the same components as the gas and liquid fuel systemsplus aliquid fuel pump clutch and additional valves to allow switching from one fuel to theother. Atstartup with liquid fuel selected, the fuel pump is engaged and liquid fuel flowsthrough theliquid modulating valve and liquid shutoff valve into the liquid fuel manifold to thenozzles. Atshutdown, the pump is disengaged, the liquid modulating valve and liquid shutoffvalves areclosed, the liquid drain valves are opened to prevent pressure buildup downstream ofthe



Page: 41 of 10

______________________________________________________________________________________


shutoff, and the manifold drain valve is opened to drain the manifold.When gas fuel operation is selected, gas flows from the supply through two shutoffvalves,through the modulating valve to the gas manifold. A small amount is sent through theliquidsystem purge valve to the liquid fuel manifold for continuous purging of all liquidfuel from themanifold and nozzles cool and prevent choking of the liquid fuel section of thenozzles. Atshutdown, the shutoff valves are closed and the vent line between shutoff valves isopened torelieve pressure.The gas turbine has the capability to transfer from one fuel to the other duringoperation.3.5. Water Injection System (when specified)The water injection system introduces demineralized water with the fuel into thenozzles ofthe gas turbine to assist in achieving required exhaust gas emission levels. Thesystemoperation is automatically controlled by the electronic gas turbine control.The demineralized water is Customer supplied to the water injection skid located justoutsidethe gas turbine encl

Hurto a PDVSA (3): Sobreprecio de $18,2MM Rolls Royce Trent60

Documents