Independent Performance Testing of Power Plants

Independent performance testing of power plants Execution and witnessing services for performance testing Power plants: capital intensive installations with high fuel costs

Realization of new power plants requires high Capital Expenditures (Capex). During their service life the Operational Expenditures (Opex) are for a major part determined by cost for f or man power and fuel. Because of the high Capex and Opex and the increasing competition on the energy market, power plant viability is under much pressure these days. The economic feasibility of a new power plant is very sensitive to the fuel f uel consumption. consumption. Therefore it is of particular importance that the heat rate (specific fuel consumption) of a new plant meets the heat rate guaranteed in the procurement contract of the plant. Higher heat rates lead to fuel consumption and thus higher fuel bills (up to millions EUR per annum). Also the plant's guaranteed output at full load (Maximum Dependable Capacity) is a Key Performance Indicator, which heavily influences the commercial success of the investment. Heat rate and Maximum Dependable Capacity belong to the most decisive parameters when making the multi-million investment decision. These parameters should be verified by an independent independent third party prior to plant take-over from the contractor. Verification whether the contractual figures are actually met is not only relevant for power plant owners and contractors, but also for operators, investors and power off-takers, e.g. to determine the actual Return on Investment or the t he contractual penalties or rewards.

Key success factors of performance testing

From this point of view it is important that before plant take-over, an appropriate appropriate performance test will be executed, to demonstrate if the agreed performance criteria are met. However, such test is not a sinecure, since not all important process variables variables can be directly measured accurately enough with installed instrumentation. Multiple (calibrated) sensors and often laboratory analyses are additionally required. E.g. the determination of the gas energy input flow requires volumetric gas flow rate, gas pressure and temperature measurements, supplemented with representative gas sampling, enabling lab-analysis for gas composition and heating value determination. Since the plant never operates exactly on the contractually agreed reference conditions, the performance indicators determined determined at the t he actual conditions should be corrected to agreed reference conditions. conditions. Furthermore measurement uncertainties are involved in the individual individual measurements. The corrected performance test results will have a resulting uncertainty, that will be (significantly)

higher than the uncertainty of the t he individual measurements. measurements. A sharp comparison with guaranteed values is only possible when the resulting uncertainty is small. T his requires specific attention to the uncertainty of primary measurements. system boundary coal, biomass and gas fired power plant for heat rate assessment (two interconnected units)

Fuel Unit 1

oal /%&t 1

@03'0 ! Gross "o# !r ST @03'1 * o#!r +a,tor ST

UNIT 1

coal

Pe @0340 ! N!t "o#!r ST$u%&t 1

Pe HP

IP

LP

Net grid supply 150 kV

G1

150 kV

#oo ust %atural gas L7 (GT3)

V

a.o DESOX

GT3

Natural.gas (GT3)

Fuel Unit 2 

Pe @0346 ! "o#!r 70 kV &"ort

6 kV

V

G3

@0330 ! Gross Gross "o#!r GT @0331 * o#!r +a,tor GT

Pe

Pe

GT4

Import f rom 70 kV kV g rid @0345 ! N!t "o#!r gastur&%!s

Net po wer GT3 Net po wer GT4 suppy 70 kV kV grid

70 kV

V

Natural gas (GT4) L6 (GT4)

70 kV

G4 Pe @0330 ! Gross Gross "o#!r GT @0331 * o#!r +a,tor GT

Pe oal /%&t '

HP

coal

IP

LP

G2

@0340 ! N!t "o#!r ST$u%&t '

Net grid supply 150 kV

150 kV

Pe

#oo ust

@03'0 ! Gross "o# !r ST @03'1 * o#!r +a,tor ST

V %atural gas

V

UNIT 2

= turbine flow meter (with P,T sensor)

Pe = Power analyser @---- r!+!r!% ,! to !asur!!%t "o&%t %t

Stakeholders

All these requirements mean that a performance test should be conscientiously prepared, executed and reported, to give meaningful, reliable results. These results can be used in official acceptance/take-over procedures of complete power plants or parts of it, as well as for capacity and fuel compensation payments payments in case of 'single-buyers' of the produced electrical (and sometimes heat and/or water) output. Generally speaking performance testing is important for the t he following stakeholders: -

(future) plant owner (wants to earn earn his his investment back according to plan)

-

plant operator (wants to operate operate the plant with minimal fuel cost) cost)

-

EPC contractor contractor (wants to hand hand over over the plant to the customer in time without without discussions about the quality of the performance assessment) assessment)

-

bank (lender) (lender) (looks for certainty certainty that that the plant owner can fulfill his his interest interest and and redemption paying obligations)

higher than the uncertainty of the t he individual measurements. measurements. A sharp comparison with guaranteed values is only possible when the resulting uncertainty is small. T his requires specific attention to the uncertainty of primary measurements. system boundary coal, biomass and gas fired power plant for heat rate assessment (two interconnected units)

Fuel Unit 1

oal /%&t 1

@03'0 ! Gross "o# !r ST @03'1 * o#!r +a,tor ST

UNIT 1

coal

Pe @0340 ! N!t "o#!r ST$u%&t 1

Pe HP

IP

LP

Net grid supply 150 kV

G1

150 kV

#oo ust %atural gas L7 (GT3)

V

a.o DESOX

GT3

Natural.gas (GT3)

Fuel Unit 2 

Pe @0346 ! "o#!r 70 kV &"ort

6 kV

V

G3

@0330 ! Gross Gross "o#!r GT @0331 * o#!r +a,tor GT

Pe

Pe

GT4

Import f rom 70 kV kV g rid @0345 ! N!t "o#!r gastur&%!s

Net po wer GT3 Net po wer GT4 suppy 70 kV kV grid

70 kV

V

Natural gas (GT4) L6 (GT4)

70 kV

G4 Pe @0330 ! Gross Gross "o#!r GT @0331 * o#!r +a,tor GT

Pe oal /%&t '

HP

coal

IP

LP

G2

@0340 ! N!t "o#!r ST$u%&t '

Net grid supply 150 kV

150 kV

Pe

#oo ust

@03'0 ! Gross "o# !r ST @03'1 * o#!r +a,tor ST

V %atural gas

V

UNIT 2

= turbine flow meter (with P,T sensor)

Pe = Power analyser @---- r!+!r!% ,! to !asur!!%t "o&%t %t

Stakeholders

All these requirements mean that a performance test should be conscientiously prepared, executed and reported, to give meaningful, reliable results. These results can be used in official acceptance/take-over procedures of complete power plants or parts of it, as well as for capacity and fuel compensation payments payments in case of 'single-buyers' of the produced electrical (and sometimes heat and/or water) output. Generally speaking performance testing is important for the t he following stakeholders: -

(future) plant owner (wants to earn earn his his investment back according to plan)

-

plant operator (wants to operate operate the plant with minimal fuel cost) cost)

-

EPC contractor contractor (wants to hand hand over over the plant to the customer in time without without discussions about the quality of the performance assessment) assessment)

-

bank (lender) (lender) (looks for certainty certainty that that the plant owner can fulfill his his interest interest and and redemption paying obligations)

-

(single-)buyer(s) (single-)buyer(s) (in case of a power purchase agreement (PPA); they need this performance information e.g. for reasonable capacity and fuel consumption consumption compensation payments).

Phases of performance test / content of test

A proper performance test comprises 4 phases: 1. Initial preparation phase 2. Pretest preparation phase (on-site) 3. Testing phase 4. Reporting phase 1. The initial preparation phase  starts  starts already in the tendering phase of a new to build power plant by defining the appropriate performance guarantees (including reference conditions and accuracy levels) and the requirements for demonstration that the guaranteed levels levels are met (e.g. Performance Test Codes such as ISO, DIN or ASME). After contract award a dedicated Performance Test Procedure will be drafted based on the relevant guarantee values, associated reference conditions, specific acceptance respectively bonus/malus criteria and other relevant contractual clauses. This includes: •

Derivation and determination determination of of the necessary formulas to calculate calculate the performance parameters,

•

Identification of the process variables to be measured have to be identified, including position of the required measurement nozzles,

•

Definition of the boundaries of the system,

•

Preparation Preparat ion of the measurement list with all contractual contract ual external and internal conditions for which the t he guarantees are given ('reference variables'), variables'),

•

Issue of correction calculations / curves curves (normally (normally by the vendor or EPCEPCcontractor), to correct the performance indicators from the actual measurement conditions to the guarantee reference conditions,

•

An uncertainty uncertainty analysis predicting the resulting resulting uncertainty of the performance indicators given the uncertainties of the individual measurements.

2. In the pretest preparation phase the required additional, additional, calibrated sensors and temporary data-acquisition data-acquisition system(s) will be installed in the process. Required flow sensors or flow measurement elements (like orifices) should be checked (and possibly be replaced or recalibrated). Shortly before the test the required personnel will be instructed, cycle isolation will be applied, and the manufacturer/contractor normally will clean process installations like condenser and GT-compressor, GT-compressor, and might do some further process optimization. When the preparations are finished, often a pre-test is done to check whether all measurement and data acquisition systems work well. 3. In the testing phase the actual performance tests will be executed: •

the proper set points will be set,

•

cycle isolation will be applied (if not already done),

•

process conditions will be stabilized,

•

when the process is steady, the test variables will be measured and stored and fuel (and if applicable ash) samples are taken for analysis in a laboratory. The test period is often (minimally) 1 hour,

•

after the tests the conditions during the tests and the raw measurements acquired in the data acquisition system will be examined and if found OK, the test will be approved and the raw data be handed over to all parties involved.

4. In the reporting phase: the acquired data will be processed and the performance indicators will be calculated in accordance with the agreed performance test procedure. With the help of correction curves (or a correction model) the actual test results will be corrected to the reference conditions. Shortly after the test preliminary results will be calculated, based on preliminary fuel (and ash) analyses. Once the fuel (and ash) analysis results are received from the laboratory, the final test results will be calculated and reported including the conclusions of the tests. Why DNV KEMA for performance testing?

DNV KEMA could either execute such performance test, or witness as an independent 3rd party the test executed by another party (e.g. the EPC contractor). DNV KEMA has an experience of more that 30 years in doing such tests and providing these services and is widely recognized as one of the world leading companies in this field. This performance testing work is organized in a dedicated, specialized team, equipped with reliable and flexible measurement systems. DNV KEMA uses dedicated thermodynamic software (Thermoware™) for carrying out the required performance calculations in an efficient and reproducible way. We use standardized property calculations for the various media involved (fuels, steam/water, flue gas, etc). Our knowledge, experience, equipment and software tools and our independency makes DNV KEMA a widely recognized player in the field of independent performance testing. We take care that the key success factors to carry out successful Performance Tests are met to the satisfaction of all parties involved. In case of independent 3rd party witnessing we will review and discuss the performance test procedure and check whether the executing party prepares, executes and reports t he performance test as agreed in the Performance Test Procedure and according to good workmanship. As indicated earlier the test results must be undisputable and of such quality that they can be used as decisive quantity in the acceptance criteria, so they should be acceptable to all parties involved. The party doing the performance test can have own interests in the results (e.g. in case the EPC contractor is doing the test and has to demonstrate that the guarantees he has given in the contract, are met). Therefore an

independent witness with no interests in the outcome is of crucial importance to prevent or settle any discussions over the test results. This enables us to provide our customers with reliable and valuable performance data of the power plant assets they own, operate, deliver, and/or invest in, and that are used by them as decisive data in important business decisions or transactions.

Gas fired combined cycle with system boundary for performance test Key Benefits 

meaningful, reliable results, that can be used in official acceptance/take-over procedures of complete power plants or parts of it



an independent basis for capacity and fuel compensation payments in case of 'singlebuyers' of the produced electrical (and sometimes heat and/or water) output



an early indication whether the investment will be earned back according to plan



an indication if the plant produces electricity (and/or heat or water) with a minimum fuel consumption



EPC contractor can hand over the plant to the customer in time without discussions about the quality of the performance assessment



banks (lenders) can have certainty that the plant owner can fulfill his interest and redemption paying obligations)

A (limited) reference list of performance testing projects that DNV KEMA has carried out, is given in the annex.

Annex: References performance testing (selection) A. Coal fired power plants ----------------------------------------------------------------------------------------------------------------------CGPL

Client:

Project title: Performance guarantee tests of the coal fired, super critical power plant

Mundra, India (5 units, total 4000 MW) Year: 

2012/2013

Period:

Jun. 2012 - Jul. 2013

Project Description:

Heat rate and power output assessment (at reference conditions) for different load points for the coal fired, 'super critical' power plant Mundra, India. Focus on steam turbine generator, condenser and feed water heaters. KEMA Consulting Scope:

-

preparation of performance test procedure

-

installation of temporary, calibrated test instrumentation

-

execution of performance tests; data collection during tests

-

calculation of performance indicators and corrections to reference conditions

-

performance test report

Benefit to Client:

Independent assessment of heat rate and power output used as decisive parameter in the take-over process of the steam turbine installation

----------------------------------------------------------------------------------------------------------------------Client(s):

GDF Suez Electrabel

Project title: Heat rate measurements of the coal and biomass fired Zolling power plant for

the benefit of the asset swap between Electrabel and E.On Year: 

2010

Period:

Jan - Apr. 2010

Project Description:

Heat rate measurements at different load points for the coal and biomass fired Zolling power plant according to the indirect method.

KEMA Consulting Scope:

-

preparation of performance test procedure

-

installation of temporary, calibrated test instrumentation

-

execution of performance tests

-

calculation of performance indicators and corrections to reference conditions

-

elaborate performance test report

Benefit to Client:

Independent assessment of heat rate of existing power plant, that was acceptable for both parties involved in the asset swap

----------------------------------------------------------------------------------------------------------------------E.On

Client:

Project title: Heat rate measurements of the coal, biomass and natural gas fired power

plant Langerlo, Belgium (for the benefit of an asset swap between Electrabel and E.On) Year: 

2009/2010

Period:

Sep. 2009 - Mar. 2010

Project Description:

Heat rate measurements at different load points for the coal, biomass and natural gas fired Langerlo power plant (using indirect method to determine coal/biomass input). Simultaneous performance test for two (interconnected) units. KEMA Consulting Scope:

-

preparation of performance test procedure

-

installation of temporary, calibrated test instrumentation

-

execution of performance tests; data collection during tests

-

calculation of performance indicators and corrections to reference conditions

-

elaborate test report

Benefit to Client:

Independent assessment of heat rate of an existing power plant, that was acceptable for both parties involved in the asset swap as decisive parameter in the financial agreements

----------------------------------------------------------------------------------------------------------------------Client(s):

GDF Suez Electrabel

Project title: Heat rate measurements of the coal fired Farge power plant (Germany) for the

benefit of an asset swap between Electrabel and E.On Year: 

2009

Period:

Aug - Nov. 2009

Project Description:

Heat rate measurements at different load points for the coal fired Farge power plant according to the indirect method. KEMA Consulting Scope:

-

preparation of performance test procedure

-

installation of temporary, calibrated test instrumentation

-

execution of performance tests

-

calculation of performance indicators and corrections to reference conditions

-

performance test report

Benefit to Client:

Independent assessment of heat rate of existing power plant, that was acceptable for both parties involved in the asset swap

----------------------------------------------------------------------------------------------------------------------Client(s):

ElektriciteitsProductiemaatschappij Zuid

Project title: Execution of heat rate measurements and performance measurements before

and after the 2005 major overhaul of the unit, boiler, steam turbines and condensers of the 400 MWe coal fired unit 12 of the Borssele power plant. Year: 

2005

Period:

jan, 2004 - dec 2005

----------------------------------------------------------------------------------------------------------------------Client(s):

Essent Energieproductie

Project title: Execution of heat rate measurements and performance measurements of the

600 MWe coal fired unit 9 of the Amer power plant in Geertruidenberg Year: 

2005

Period:

okt, 2004 - feb, 2005

----------------------------------------------------------------------------------------------------------------------Client(s): Nuon Power, Heat & Services Project title: Heat rate measurements at the Hemweg power plant in Amsterdam Year: 

2002

Period:

Apr 15, 2002 - Aug 30, 2002

Project Description:

Heat rate measurements at the Hemweg power plant in Amsterdam. -----------------------------------------------------------------------------------------------------------------------

B. Gas fired power plants ----------------------------------------------------------------------------------------------------------------------Client(s):

Abu Dhabi Water & Electricity Company

Project title: ADWEC power and water purchase agreements (PWPA) 2004-2014: 10 year

contract for third party services for net dependable capacity (NDC) performance tests and supplementary tests concerning 5 independent power producers (IPP’s) representing 14 power plants Year:  2014

Period:

Oct 04, 2004 - Dec 31, 2014

Project Description:

Overview of the IPP’s involved in the Abu Dhabi Power Water sector. Gulf Total Tractebel Power Company: - Al Taweelah A1 comprising 8 GE Frame 9E GT’s of 100 MWe each, 3 ST’s of 200 MWe each and a water production capacity of 84 MG per day - Al Taweelah A2 with a total power output of 710 MWe and water production capacity of 50 MG per day. Arabian Power Company: - Abu Dhabi Power Station comprising 4 GE Frame 5 GT’s of 10 MWe each, 7 GE Frame 5 GT’s of 16 MWe each, 8 GE Frame 6 GT’s of 24 MWe each, 6 ST’s of 20 MWe each and a water production capacity of 15 MG per day - Al Ain Power Station comprising 4 diesel gen. sets of 6 MWe each, 4 diesel gen. sets of 15 MWe each, 6 GE Frame 5 GT’s of 18 MWe each, 4 GE Frame 5 GT’s of 22 MWe each, 2 GE Frame 5 GT’s of 26 MWe each, 4 GE Frame 6 GT’s of 29 MWe each - Umm Al Nar West comprising 6 Skoda ST’s of 60 MWe each, 2 Skoda ST’s of 160 MWe each, 2 Elin Union ST’s of 75 MWe each and a water production capacity of 60 MG per day - Umm Al Nar East comprising 2 Alstom GT’s of 60 MWe each, 2 Fiat GT’s of 65 MWe each and a water production capacity of 42 MG per day. Shuweihat CMS Power Company: - Shuweihat S1 Power Station comprising 5 Siemens SGT5-4000F GT’s of 300 MWe each, 1 ST of 250 MWe and a water production capacity of 100 MG per day. Al Mirfa Power Company: - Al Mirfa with a installed GT capacity of 185 MWe and water production capacity of 16 MG per day - Madinat Zayed with a installed GT capacity of 135MWe. Al Taweelah Power Company: - Al Taweelah B comprising 6 Alstom DKE2 ST’s of 20 MWe each - Al Taweelah B2 comprising 1 GE Frame 9E GT of 87 MWe, 1 ST’s of 143 MWe and and a water production capacity of 20 MG per day - Umm A: Nar B with a water production capacity of 63 MG per day - Banyas comprising 4 GE Frame 6 GT’s of 26 MWe each. KEMA Consulting Scope:

In general the scope of work comprises: - consultancy services for ADWEC related to reviewing and discussing power plant performance test procedures - witnessing and supervision of the annual net dependable capacity (NDC) tests to be carried out by the producers as required by various power and water purchase agreements (PWPA) conducted

between ADWEC and the IPP’s - supervision of the test preparation on site at the producers facilities - check of test and/or station equipment used during the NDC tests - supervision of the annual NDC tests - evaluation and re-calculation of NDC test results - check of compliance with agreed values in the PWPA’s - reporting on the tests results to ADWEC upon request of ADWEC: issuing a “Power Plant Performance Certificate” for the producers if the test results demonstrate compliance with applicable PWPA’s. Deliverables: Upon completion of the tests/project KEMA provides ADWEC with: - per plant per NDC test a full “test report” - per plant per successfully completed NDC test a “Power Plant Performance Certificate”. Benefit to Client: Independent test supervision/execution resulting in reliable determined key performance

parameters of the complete power plant and the individual main components enabling contractual billing based on accepted key figures. ----------------------------------------------------------------------------------------------------------------------Client(s):

NEM

Project title: Witnessing services of the performance guarantee tests of the 1300 MWe

Magnum power plant in Eemshaven, witnessing of the commissioning tests and execution of performance measurements on the HRSG’s Year:  2013

Period:

May 2013 – Okt 2013

Project Description:

The Gas Turbine Combined Cycle power plant Magnum at Eemshaven comprises of three units, each consisting of a Mitsubishi Gas Turbine and a NEM vertical HRSG. Each unit has a power output of 450 MWe. DNV KEMA supplied measurement data to NEM and witnessed the performance tests of each unit for a confidential client. DNV KEMA also acted as independent witness for the operational capability tests. KEMA Consulting Scope:

The services comprised: Witnessing services of the performance tests: -

Review and commenting performance test procedure

-

witnessing of the performance tests for a confidential client and issuance of an independent verification report

-

verification ISO-TIT each gas turbine

-

measurements of the HRSG for NEM

Witnessing services of the operational capability tests: -

review and commenting operational test procedures

-

ramp rate tests each unit

-

startup time tests (cold, warm, hot starts) each unit

-

minimum running time and stand still time tests each unit

-

maximum output test (72 h) each unit

-

minimum output test (24 h) each unit

-

combustion stability tests (low, normal, high Wobbe index) each unit

-

reliability test (14 days) each unit

-

plant wide reliability test (14 days)

Witnessing services grid compliance as per DTe tests:

-

review and commenting grid compliance test procedures voltage interruption test each unit low voltage test each unit island mode test each unit voltage interruption test plant wide island mode test plant wide

Additional services: -

frequency response test each unit for Tennet

-

component analysis for NUON/Vattenfall

-

measurement of main cooling water line pressure for Confidential client

Benefit to Client:

Independent in-depth knowledge assuring the clients to get the right performance test results and an independent judgment on the reliability and operation of the plant. ----------------------------------------------------------------------------------------------------------------------Client(s):

Vattenfal / Nuon Power Generation

Project title: Witnessing of the performance guarantee tests of the 435 MWe Hemweg 9 Year:  2012

Period:

May 2012 – Nov. 2012

Project Description:

The gas turbine combined cycle (GTCC) power plant "Hemweg 9" in Amsterdam West comprises a (Siemens) gas turbine, steam turbine, heat recovery steam generator and

generator. The nominal power output of the combined cycle unit is 435 MWe. Nuon Power Generation provided KEMA the order to witness the guarantee performance tests (and emission verification) as performed by Siemens (at 4 different load points). Furthermore the single cycle performance tests of the gas turbine were witnessed. KEMA Consulting Scope:

The services as independent engineer for witnessing the performance tests comprise: - Reviewing the test procedures - Attending meetings on-site - Witnessing of the tests as performed by Siemens - Independent performance calculations using KEMA’s own thermodynamic software - Delivery of an extensive final report containing independent calculations by KEMA and comparison with the Siemens test results. Benefit to Client:

Independent in-depth knowledge assuring Nuon Power Generation to get the right performance test results. ----------------------------------------------------------------------------------------------------------------------Client(s):

Confidential

Project title: Performance testing of the Ras Laffan C IWPP Project in the State of Qatar Year:  2012

Period:

Mar 07, 2010 - Dec 30, 2012

Project Description:

The Ras Laffan C Independent Water and Power Project has been constructed in Ras Laffan in the State of Qatar. Owner is Ras Girtas Power Company (RGPC) and the EPC prime Contractor is Mitsui. Hyundai Engineering and Contracting Co., Ltd (HDEC) was Contractor for the whole realisation of the station in all its aspects. The plant generates in total 2,730 MW of electricity and a desalinated water production of 63 MIGD. The plant consists of four power blocks and three desalination blocks (of nine desalination units each). Each power block consist of two gas turbines, MHI type M701F3, two single pressure heat recovery steam generators (HRSG’s) supplied by Doosan, and one MHI condensing type steam turbine. Generated steam will be delivered to the 10 MED desalination units supplied by SIDEM. Part of the commissioning activities are performance tests of the GT's in Simple cycle and each block with its main components, as well as acceptance tests of the total plant. Each

OEM/(sub)contractor has to demonstrate to the EPC contractor whether the contractual performance guarantees have been fulfilled based on the supply contract. The EPCcontractor, has to demonstrate to the end client, Ras Girtas Power Company, whether the contractual performance guarantees have been fulfilled based on the EPC Contract. To conduct these tests in an efficient way, HDEC has contracted KEMA to act as Project Manager with supervision and reporting duties. During the cold and hot commissioning activities and during the warrantee period some technical issues surfaced where KEMA has conducted independent Third Party assistance in the Project. KEMA Consulting Scope:

Related to the defined test program, the following scope of activities are performed by KEMA: • Review and advice on all Performance test procedures Thermodynamic, Environmental (emissions and noise) and Water • Witnessing of the Performance testing included Fuel and product water sampling and analyzing • Review and validation of the test results (preliminary test reports) • Review OEM reports • Delivering of Final Reports. Further KEMA has acted as Project Manager to coordinate all aspects of the Perfomance and acceptance tests on behalf of HDEC. KEMA engineers specialized in steam turbines, hrsg's and NDT have attended site while metallurgical investigations in our laboratories have been carried out. Benefit to Client: HDEC is supported by a reputable and recognized Company to oversee and conclude the

Performance tests and technical issues surfacing during commissioning and warrantee period to the satisfaction of all parties. ----------------------------------------------------------------------------------------------------------------------Client(s):

RWE/Essent

Project title: Witnessing of the performance tests of the 1300 MWe Claus C power plant

(3x GT26) Year:  2011

Period:

May 2011 – Jan. 2012

Project Description:

Claus C is a partly new power plant comprising 3 (new) GT26 gas turbines with heat recovery steam generators and an (existing) steam turbine. Total nominal power output is

about 1300 MWe. RWE/Essent ordered KEMA for performance tests on the condensor and for witnessing services of the guarantee performance test as to be performed by Alstom. KEMA Consulting Scope:

The services as independent engineer for witnessing the performance tests comprise: - Reviewing the preliminary and final test procedures - Attending meetings on-site - Witnessing of the test as performed by Alstom - Independent calculations of the performance of the condenser and the Balance of Plant using KEMA’s own thermodynamic software - Review of the test results including the Alstom test report. ----------------------------------------------------------------------------------------------------------------------Client(s):

Electrabel

Project title: Witnessing of the performance tests of the 870 MWe Maxima power plant (unit

4 and 5 GTCC) Year:  2010

Period:

May 2010 – Oct. 2010

Project Description:

The gas turbine combined cycle (GTCC) power plant "Maxima", close to Lelystad in the Netherlands comprises 2 units which each a gas turbine, steam turbine, heat recovery steam generator and generator. Each unit is based on a Alstom GT26 gas turbine (with sequential combustion). The steam turbine is (normally) one the same shaft as the gasturbine. The nominal power output of the (KA26-1) combined cycle unit is 435 MWe. The units have a rather low minimum load (about 18%) and still comply NOx emissions. Electrabel ordered KEMA for each of the units to witness the guarantee performance test as performed by Alstom (at 3 different load points). KEMA Consulting Scope:

The services as independent engineer for witnessing the performance tests comprise: - Reviewing the test procedures - Attending meetings on-site - Witnessing of the tests as performed by Alstom - Independent performance calculations using KEMA’s own thermodynamic software - Delivery of a brief on-site report - Delivery of an extensive final report containing independent calculations by KEMA and comparison with the Alstom test results.

Benefit to Client:

Independent in-depth knowledge assuring Electrabel to get the right performance test results. ----------------------------------------------------------------------------------------------------------------------Client(s):

Statoil ASA

Project title: Witnessing of the performance tests and environmental measurements of the

combined heat and power plant at Mongstad Norway Year:  2010

Period:

Jan, 2010 - Dec, 2010

Project Description:

The combined heat and power plant Mongstad, western Norway comprises a two gas turbines and generators, two heat recovery steam generator and one steam turbine and generator. The power plant is based on two General Electric 9E gas turbines, two NEM HRSG’s and one GE steam turbine. The combined heat and power plant is integrated with the refinery to obtain energy advantages due to exchange of refinery gas, production of hydrogen, crude oil heating and steam delivery. Troll gas and refinery gas is conditioned in the utility upstream of the gas turbines in order to meet the fuel specification of the gas turbines. Statoil ASA ordered KEMA to witness the guarantee and emission measurements. KEMA Consulting Scope:

The services as independent engineer for witnessing the performance tests and the coordination and evaluation of the emission measurements comprise: - Reviewing the test procedures - Attending meetings on-site - Independent performance calculations using KEMA’s own software ThermoWare - Witnessing of the tests as performed by DONG with its subcontractors - Delivery of a brief on-site report - Delivery of an extensive final report containing independent calculations by KEMA and comparison with the guarantees. Benefit to Client:

Independent in-depth knowledge assuring Statoil ASA to get the right performance test ----------------------------------------------------------------------------------------------------------------------Client(s):

Electricité du Liban

Project title: Performance Tests Combined Cycle Gas Turbine Power Plants Deir Ammar

and Zahrani, Lebanon Year:  2010

Period:

Oct 08, 2007 - Jun 01, 2010

Project Description:

By order of the Client, KEMA carried out performance tests at the Combined Cycle Gas Turbine (CCGT) power plant in Deir Ammar and Zahrani, Lebanon. Both CCGT power plants consist of two gas turbines, type SGT5-2000E (V94.2), one manufactured by Siemens and one by Ansaldo, in combination with a steam turbine manufactured by Ansaldo. The facilities are light distillate (LFO) fired at which the performance tests were carried out. Power output is 435 MWe. KEMA Consulting Scope:

Tests were based on the combined cycle as a unit. Separate detail calculations regarding main components were carried out with respect to the gas turbines (GT’s), heat recovery steam generators (HRSG’s), steam turbine and condenser. The test results are being used to establish the base line for performance which is to be maintained for the five year contract, taking deterioration effects into account. The purpose of this measurement was the determination of power output and heat rate at full load, recalculated to reference conditions. The performance of major components is determined and evaluated. ----------------------------------------------------------------------------------------------------------------------Client(s):

Gas Natural

Project title: Independent Third Party Witnessing of the Performance Test of the

Campanillas Combined Cycle Gas Turbine Plant in Malaga, Spain Year:  2010

Period:

Aug 01, 2009 - Dec 31, 2010

Project Description:

Gas Natural owns the 400 MWe Campanillas CCGT plant in Malaga, Spain. The is 60 per cent efficient, and is comprises Alstom's GT26 gas turbine, steam turbine, heat recovery steam generator (HRSG) and TOPGAS turbo-generator. Alstom will build, operate and maintain the integrated turnkey power plant for 12 years. The company will also be responsible for the civil works, balance of plant and the construction of a 13 km water pipeline and 5 km gas pipeline. KEMA Consulting Scope:

By order of Gas Natural, KEMA was assigned to witness the performance test of the Central de Ciclo Combinado de Malaga (C30), build by Alstom Power Systems. This CombinedCycle Power Plant consists of a GT26 gas turbine with triple pressure HRSG in a single shaft configuration. The purpose of the test was to verify the guarantees as given by Alstom in the purchase contract. The guarantees on natural gas are given at base load, 77.5, 55.8 and

47.4 per cent part load and on liquid fuel firing at base load. The tests were carried out by Alstom, attended by Gas Natural and witnessed by KEMA as the independent third party. As the dynamic behavior of both parameters, varying gas quality and rapid sunrise, were on the edge of stability constrains parties agreed to change the schedule into three half hour periods, with three data averaging outputs of the data acquisition system and four fuel gas samples from begin to end. The average results of the half hour in the middle has been taken as decisive for the performance figures. The average results of the first and last half hour have been used for checking the reliability of the decisive figures. ----------------------------------------------------------------------------------------------------------------------Client(s):

Jubail Water and Power Company

Project title: Performance testing of the Marafiq Independent Water and Power Plant

(IWPP) in Jubail, Kingdom of Saudi Arabia Year:  2010

Period:

Sep 01, 2009 - Apr 30, 2010

Project Description:

The Marafiq Independent Water and Power Project has been constructed in the city of Jubail, in the north east region of Saudi Arabia and started commercial operation at the end of 2009. The plant will generate in total 2,750 MW of electricity and 800,000 m3/day of desalinated water will be produced. The plant consists of four power blocks and three desalination blocks (of nine desalination units each). The power blocks 1-3 consist of three gas turbines, GE type 7 FA, three heat recovery steam generators (HRSG’s), supplied by Hyundai, and one GE back-pressure steam turbine. Generated steam will be delivered to the desalinations blocks, consisting of 9 MED-units each, supplied by SIDEM. Power block 4 consists of three gas turbines, three HRSG’s and one condensing steam turbine from the same suppliers/OEM’s as for the blocks 1-3. Part of the commissioning activities are performance- and COD/PCOD tests of each unit and its main components, as well as the total plant (PCOD). Each OEM/(sub)contractor has to demonstrate to the EPC contractor whether the contractual performance guarantees have been fulfilled based on the supply contract. The EPCcontractor, has to demonstrate to the end client, Jubail Water and Power company (JWAP), whether the contractual performance guarantees have been fulfilled based on the EPC Contract. To conduct these tests in an efficient way, JWAP has contracted KEMA to act as an independent third party to support these tests and advice JWAP. KEMA Consulting Scope:

Related to the defined test program, the following scope of activities will be performed by KEMA: • Review and advice on test procedures: KEMA’s reviews the Test Procedures; Performance Test procedures, COD Thermal (blocks 1-3 and block 4), COD water, Acoustics

Emission and PCOD Power and Water • Availability at site to meet with contractor for finalizing test procedures/documents • Witnessing of the testing: Performance Tests, COD Tests per block, and PCOD total plant performance test • Fuel and product water sampling and analyzing: for all tests witnessed by KEMA • Review and validation of the test results and submitted reports: for all tests witnessed by KEMA. ----------------------------------------------------------------------------------------------------------------------Client(s): Project title: Annual Performance Test 2010 for Unit 10 and 20 of the Al Ezzel Power

Station Year:  2010

Period:

Mar 01, 2010 - Jul 31, 2010

Project Description:

The Al Ezzel O&M Company operates the 1,000 MWe power plant Al Ezzel in the Kingdom of Bahrain. Located in the Hidd industrial area of Muharraq Island, just south of Bahrain International Airport, the plant burns natural gas. Configuration: Two 475 MWe, 2+1 combined-cycle desalination blocks with SGT5-2000E gas turbines Al Ezzel O&M has scheduled their annual performance test 2010 for unit 10 and 20, in order to determine the actual output. The tests will be a copy of the tests as conducted in 2008 and 2009. Al Ezzel has requested KEMA Middle East for support as an independent third party to witness these annual performance tests. KEMA Consulting Scope:

KEMA Middle East is requested to provide the following items: • Test preparations at home office • Review and comment on received performance test procedure. • Witnessing the tests for unit 10 and 20. • Review and comment on received performance test report. ----------------------------------------------------------------------------------------------------------------------Client(s):

BP Hythe CHP Plant

Project title: GE gas turbine LM6000 performance test at BP-Hythe Enichem Year:  2009

Period:

Nov 01, 2008 - May 01, 2009

Project Description:

The BP Hythe, Enichem combined cycle power plant consists of one gas turbine, type GE

LM6000PD, one two pressure horizontal type Heat Recovery Steam Generator (HRSG) and one Siemens steam turbine. The revised gas turbine has been subject for a new performance test. The purpose of the test is to determine the actual performance as a new base line reference. The performance test is based on ISO 2314. For information a comparison has been made with the results of the original performance test, as conducted during the official plant performance test in April 2005 and the validation test in March 2006. The test is performed in November 2008. KEMA Consulting Scope:

The scope of work comprises: • supply of (calibrated) instruments for the required important measurements • installation of the test instruments on site • carrying out the gas turbine performance test • delivery of a preliminary test report on site • delivery of a final test report, with all test data, fuel analysis, complete calculations, calibration certificates, test observations, executive summary and a discussion and comparison of the results. ----------------------------------------------------------------------------------------------------------------------Client(s):

EdeA

Project title: Annual execution of heat rate measurements of the 235 MWe natural gas fired

combined heat and power plant Swentibold in Geleen for 2003-2009 Year:  2009

Period:

Sep 01, 2003 - Dec 31, 2009

Project Description:

The production facilities of the Client consists of furnaces, steam turbines, nitrogen compressors, auxiliary air compressors, a backup auxiliary air compressor, deminiralization facilities, a potable water facility a flocculator and several high-voltage substations. Of the former ten boiler installations, today, only five are still in service. The other units have been replaced by the new Combine Heat and Power (CHP) plant Swentibold. This plant comprises a Siemens SGT5-2000E (V94.2) gas turbine, two Heat Recovery Steam Generators and one steam turbine. The plant's power output is 240 MWe and the maximum high- and mediumpressure steam production is 300 tons/hour. The produced power and heat is delivered to the production facilities of the clients at the Chemelot industrial estate North and South Geleen. The Swentibold CHP went into commercial operation in 1999. Since 2003 KEMA performs every year heat rate measurements at the CHP in order to determine power output, efficiency and steam production.

KEMA Consulting Scope:

The tests are performed with and without steam supply. The most relevant process parameters are recorded by unit equipment. The ambient air conditions are measured by KEMA. Test program: • during CC operations: W1, W2, W3, W4 and E1 • during steam supply (CHP operations): W5, W6, W7, W11 and W12. The power output varies from 85 – 235 MWe. The high pressure steam supply varies from 20  – 135 tons/hour. The intermediate pressure steam supply varies from 40 – 90 tons/hour. The measured and calculated values are being reduced to standard reference conditions using the software program SPENCE. ----------------------------------------------------------------------------------------------------------------------Client(s):

Central Electricity Generating Company

Project title: Independent engineer services to CEGCO and NEPCO in relation to fuel

allowance, gas efficiency and plant performance tests Year:  2009

Period:

Jan 25, 2008 - Mar 31, 2009

Project Description:

ursuant to the Power Purchase Agreements (PPA), NEPCO will pay for the net dependable capacity of CEGCO’ s generating units made available to NEPCO. NEPCO will also pay for the energy sent out by CEGCO’s generating units in accordance to the provision of the PPA’s. For the purpose of these commercial events, certain operational parameters shall be defined for each of CEGCO's assets. The determination of these parameters requires a range of measurements to be carried out by an experienced company. CEGCO as selling party and NEPCO as buying party require an independent monitoring party in order to ensure the absolute independency of the acquired process parameters for heat rate and net dependable capacity. The services will require an availability of this ‘Independent Engineer’ for a period up to 12 months. CEGCO conducts the performance tests, fuel allowance tests and gas efficiency tests within a period of nine months where all of the generating units will be tested. The ‘Independent Engineer’ shall monitor the tests in accordance with the PPA’s as issued by CEGCO. The objective of the tests will be to establish the main technical parameters of the selected CEGCO’s generating units. nbsp; he CEGCO generating assets involved in the PPAs are: Aqaba Thermal Power Station: comprises 5 x 130 MWe + 1 x 6 MWe steam turbine and hydro units, located on Aqaba beach at south of Jordan and situated 35 meters

above sea level Hussein Thermal Power Station: comprises 3 x 33 MWe + 3 x 66 MWe + 33 MWe steam and gas turbine units, located at north east of Jordan about 30 km fr om Amman, and situated 560 meters above sea level Al-Risha Power Station: comprises 3 x 38 MWe + 1 x 36 MWe + 1 x 42 MWe gas turbine units, located at Al-risha in Almafraq District about 350 km from Amman and situated about 900 meters above sea level Rehab Power Station: comprises 2 x 121 MWe + 1 x 105 MWe + 2 x 38 MWe gas turbine and combined cycle units, located in the north of Jordan, about 70 km north of Amman city and situated about 800 meters above sea level Marka Power Station: comprises 4 x 20 MWe gas turbine units, located within the City of Amman and situated about 750 meters above sea level Amman South Power Station: comprises one 37 MWe and one 41 MWe gas turbine units, located within the City of Amman and situated about 900 meters above sea level Karak Power Station: comprises one 20 MWe gas turbine and two 20 MWe diesel engine units, located in City KEMA Consulting Scope:

The proposed and proven methodology is as follows. CEGCO contracts an independent international consultant firm for the execution of the tests. KEMA will act as ‘Independent Engineer’ who will: - Review all test procedures as provided by the independent international consultant firm - Prepare test procedures where the independent international consultant firm fails to do so - Carry out preliminary site visits in order to discuss operations with the staff and collect all available design information including correction curves. Also documentation regarding the commissioning will be required including test reports - Discuss test issues before the tests with the independent international consultant firm, CEGCO and NEPCO employees and plant staff - Check and review the test preparations - Witness the actual tests, recording of data and taking of samples - Carry out all calculations using our special thermodynamic modeling program ThermoWare - Compare results with the calculated results from the independent international consultant firm if required, - Prepare a standardized test report with the final results. ----------------------------------------------------------------------------------------------------------------------Client(s):

AES Jordan PSC

Project title: Independent Engineer between AES Jordan PSC and NEPCO for the PPA

commissioning tests of the new to build Amman East GTCC power plant in Almanakher, Jordan Year:  2009

Period:

Apr 01, 2008 - Dec 31, 2009

Project Description:

In April 2007, AES expanded into Jordan, where it is constructing the country’s first independent power project, a 370 MW combined cycle gas-fired (CCGT) power plant located

outside of Amman. The project, called AES Jordan PSC, also known as the Amman East Power Project, is expected to reach the first phase of commercial operations during early 2009. AES and Mitsui entered into a 25-year Power Purchase Agreement with National Electric Power Company (NEPCO) of the Hashemite Kingdom of Jordan. The Amman East Power Plant project, also known as the Almanakher power plant consists of a 370 MWe gasfired combined cycle power station to be build, owned and operated by AES Jordan PSC, a  joint venture between AES Oasis Limited and Mitsui Company Limited. The power station will be constructed on a site located at Almanakher which is approximately 14 kilometers east of Amman, the capital of Jordan. The gas turbine combined cycle power station will comprise two Siemens SGT5-2000E (V94.2) gas turbines, two heat recovery steam generators (HRSG’ s) and one steam turbine, and all necessary auxiliary facilities, including administrative offices, plant control room, warehousing facilities, and workshops. Natural gas will be supplied to the project by NEPCO with the pipeline operated by Fajr. The gas is being supplied from Egypt through the Arab Gas Pipeline coming ashore at Aqaba. The transmission line and substation by the Water Authority of Jordan (WAJ). The project will treat the water before use and discharge the water into an evaporation pond. KEMA Consulting Scope:

KEMA reviews the detailed programs and protocols to be used during the testing and commissioning of the facility consistent with the provisions of the PPA. Performance testing shall be in accordance with international testing standards and codes. During the construction and commissioning period, KEMA will visit the site on “as required” basis at the  joint request of the AES and NEPCO. The Project Company shall carry out the commissioning of the plant, the testing of the initial dependable capacity test. Commercial operation dates and the testing of the dependable capacity of the facility will take place thereafter in accordance with the PPA. The “Commercial Operational Tests” shall consist out of the following tests set out below: - Tests prior to synchronization - Functional tests Commercial Operation Tests - Reliability test (including the capacity test to establish the IDC). ----------------------------------------------------------------------------------------------------------------------Client(s):

Lanka Transformers; West Coast Power

Project title: Performance testing of two GE Frame 9E gas turbines for the Yugadanavi

GTCC power plant at Kerawalapitiya, Wattala in Sri Lanka Year:  2009

Period:

Jul 01, 2007 - Jan 31, 2009

Project Description:

Lakdhanavi, a 100 per cent daughter of the Sri Lankan engineering company Lanka Transformers has built a 300 MWe power plant in Kerawalapitiya. Lanka Transformers is involved in manufacturing distribution transformers, power generation as well as other

engineering services. The plant will be owned and operated by W est Coast Power, an Independent Power Producer (IPP), who signed a Power Purchase Agreement (PPA) with the Ceylon Electricity Board (CEB) that will buy back the electricity. The plant is to be switched to Liquefied Natural Gas (LNG) in the long term, with the government lining up Japanese funding to build an LNG unloading and storage terminal as well as another 300 MWe plant, also at Kerawalapitiya. The Yugadanavi GTCC power plant for West Coast Power is being constructed at Kerawalapitya. The project site is located near Wattala, about 10 kilometers North of Colombo, Sri Lanka. At present, the plant is fuelled with Heavy Fuel Oil (HFO). KEMA Consulting Scope:

By order of Lakdhavani Private, KEMA witnessed the Full Speed No Load (FSNL) tests at the GE facility in Belfort France, to be installed in the new facility at Kerawalapitya, Sri Lanka. The witnessing of the factory tests including the repeat of each test comprised: determination of overall mechanical performance - determination of aerodynamic and thermodynamic performance (at FSNL) - rotor vibration. At the end of the commissioning period KEMA was assigned to carry out performance tests regarding two gas turbines, type GE MS209E (PG9171E). The performance tests have been carried out according to the test procedure submitted by KEMA. Each gas turbine was tested separately, running on Heavy Fuel Oil (HFO). For major important process parameters, temporary calibrated equipment was used, according the test procedure. HFO samples were taking during the base load tests of each gas turbine, and analyzed in a laboratory in Colombo. ----------------------------------------------------------------------------------------------------------------------Client(s):

E.ON Benelux Generation

Project title: Guarantee and Reference Tests of the GTCC Constant Rebecca Power Plant

in Den Haag Year:  2008

Period:

Nov 01, 2007 - Mar 31, 2008

Project Description:

The Den Haag plant, unit GV15 at the Constant Rebecca square, is equipped with two GE LM2500+ gas turbines, two HRSG’s, a Stork DeLaval steam turbine with Smit Slikkerveer generator, installed in 1952 fully revised in 1982. In 2006, the two Rolls Royce Olympus SK30 gas turbines have been replaced. The Client owns this plant since 1991. The Client asked KEMA to perform guarantee and reference tests of the GTCC unit Constant Rebecca in Den Haag. After the power plant refurbishment in 1982, KEMA also performed the tests of the main components and the entire GTCC plant. Purpose of the tests is to determine a zero reference of the GTCC plant after the 2006 repowering. Also, the key characteristics of the main components need to be recorded and verified. This enables the

Client to compare the present performance with the 1982 test results. Reference test have been performed in 2007 and 2009. KEMA Consulting Scope:

Tests were performed at the following operational conditions with one and two gas turbines in operation: • GTCC heat rate at four load points • GTCC maximum power and maximum heat production • GTCC minimum power and maximum heat production • GTCC heat production at Full Speed No Load (FSNL) of the gas turbines. Besides the performance of the entire GTCC unit, the reference conditions and characteristics of the main components have to be determined, e.g.: • two LM2500+ gas turbines • two vertical heat recovery steam generators and the heat exchanger for district heating • one steam turbine and condenser • one district heating condenser. After the tests KEMA submitted a comprehensive test report. -----------------------------------------------------------------------------------------------------------------------

Client(s):

E.ON Benelux Generation

Project title: Guarantee and Reference Tests of the GTCC Langegracht Power Plant in

Leiden Year:  2008

Period:

Nov 01, 2007 - Mar 31, 2008

Project Description:

The Client asked KEMA to perform guarantee and reference tests of the GTCC unit Langegracht in Leiden. After the power plant refurbishment in 1986, KEMA also performed the tests of the main components and the entire GTCC plant. Purpose of the tests is to determine a zero reference of the GTCC plant after the 2006 repowering. Also, the key characteristics of the main components need to be recorded and verified. This enables the Client to compare the present performance with the 1986 test results. KEMA Consulting Scope:

Tests will be performed at the following operational conditions with one and two gas turbines in operation: • GTCC heat rate at four load points • GTCC maximum power and maximum heat production

• GTCC minimum power and maximum heat production • GTCC heat production at Full Speed No Load (FSNL) of the gas turbines. Besides the performance of the entire GTCC unit, the reference conditions and characteristics of the main components have to be determined, e.g.: • two LM2500+ gas turbines • two vertical heat recovery steam generators and the heat exchanger for district heating • one steam turbine and condenser • one district heating condenser. After the tests KEMA submitted a comprehensive test report. ----------------------------------------------------------------------------------------------------------------------Client(s):

Naturkraft

Project title: Witnessing of the performance tests and environmental measurements of the

420 MWe GTCC Kårstø power plant of Naturkraft in Norway Year:  2008

Period:

Sep 03, 2007 - Feb 03, 2008

Project Description:

The gas turbine combined cycle (GTCC) power plant Kårstø in Rogaland, western Norway comprises a gas turbine, steam turbine, heat recovery steam generator and generator. The power plant is based on a Siemens STG5-4000F gas turbine with a plant power output of 420 MWe. The plant delivers up to 3.5 TWh a year to the Norwegian power grid, corresponding to around 3% of Norway’s total electricity production. The power plant is the first of its kind in Europe with a filtering system for NOx emissions. Naturkraft ordered KEMA to witness the guarantee and emission measurements peformed by Siemens and Norsk Energi. KEMA Consulting Scope:

The services as independent engineer for witnessing the performance tests and the coordination and evaluation of the emission measurements comprise: - Reviewing the test procedures - Attending meetings on-site - Independent performance calculations using KEMA’s own software ThermoWare - Witnessing of the tests as performed by Siemens Norsk Energi - Delivery of a brief on-site report - Delivery of an extensive final report containing independent calculations by KEMA and comparison with the Siemens test results. Benefit to Client: Independent in-depth knowledge assuring Naturkraft to get the right performance test results.

----------------------------------------------------------------------------------------------------------------------Client(s):

Ranhill Powertron

Project title: Preparation, execution and reporting of the guarantee tests of block 1 of the

Teluk Salut gas turbine combined cycle power plant in Sabah, Malaysia Year:  2008

Period:

Jan 08, 2008 - Apr 30, 2008

Project Description:

Teluk Salut power plant 190 MWe combined cycle conversion project at the Kota Kinabalu Industrial Park in Sabah, Malaysia. The existing power plant, commissioned in 1998, consists of four frame-6 GE gas turbines, which are running on open cycle. After conversion the plant will be producing 190 MWe from its past 120 MWe capacity. Two blocks of 2-2-1 configuration gas turbine combined cycle (GTCC) power plant has been designed to operate at base load to meet continuous load demand with the ability for cyclic operation. The power plant comprises: 4 33 MWe GE MS6001G gas turbines, four heat recovery steam generators (HRSG) and two condensing steam turbines. The plant f ires natural gas and light distillate oil. The guarantee test will be carried out following a test procedure prepared before the tests, covering the requirements stated in contract documents. KEMA will provide, install and operate a performance measurement system to be deployed for the measurement of all for the test required process parameters. The instruments used will be calibrated to international standards and comply with the requirements of the applicable standards. KEMA Consulting Scope:

The scope of work for the guarantee test is: - preparation of the test procedure - preparation and calibration of required KEMA instrumentation - installation and testing of additional calibrated equipment - check of gas flow elements - check and calibration of liquid flow meters - execution of the measurements - preparation of a site report containing preliminary results - discussion of test results on site - final test report. ----------------------------------------------------------------------------------------------------------------------Client(s):

Essent Energie Productie

Project title: Execution of performance tests before and after maintenance of the GE

LM6000 gas turbine of the 50 MWe CHP in Eindhoven Year:  2007

Period:

Oct 27, 2006 - Feb 28, 2007

Project Description:

Purpose of the tests is the determination of the gas turbine performances before and after

the maintenance. The information gives insight in the effects of the overhaul. During the performance test the most important parameters are being measured with calibrated KEMA equipment. Further process parameters are being measured with unit instrumentation. The scope of work comprises: - execution of a performance test before and after maintenance at different load points - before overhaul at 80 and 60% load - after overhaul at 100, 80 and 60% load - reporting of all test results. ----------------------------------------------------------------------------------------------------------------------Client(s):

Total Tractebel Emirates O&M Company

Project title: Performance testing of GT14 of the Al Taweelah A1 power plant Year:  2007

Period:

Jan 11, 2007 - Mar 31, 2007

Project Description:

Performance testing of GT14 of the Al Taweelah A1 power plant KEMA Consulting Scope:

KEMA performed the tests and installed own calibrated equipment to measure the key performance parameters. Key performance parameters measured by KEMA are: - Ambient air conditions (pressure, temperature and relative humidity) - Air inlet and exhaust gas pressures - Generator power output. Benefit to Client: The client gets insight information of increase in unit power output after a hot gas path

inspection and refurbishment. ----------------------------------------------------------------------------------------------------------------------Client(s):

Gas Natural

Project title: Witnessing of the thermodynamic performance tests of the 800 MWe GTCC

Plana del Vent in Tarragona, Spain. Year:  2007

Period:

Mar 01, 2007 - Oct 31, 2007

Project Description:

GAS NATURAL has completed the installation of the chief components of the combinedcycle plant at Plana del Vent in Tarragona, with a rated output of 800 MWe, and plans to carry out the first trials on the gas turbines in 2007. The installation of the two gas turbines, the two steam boilers, cooling tower, the stacks and the entire system of piping of the plant has been completed. The gas turbine is scheduled to come into operation in early 2007 to

produce electricity during trials and commissioning. The company expects both generators to come into commercial operation before 2008. Plana del Vent is the fifth combined-cycle plant which GAS NATURAL operates in Spain. Each unit consists of a GE Frame 9371 (9FB) gas turbine with triple pressure HRSG in a single shaft configuration. At site conditions the net rated power output on natural gas is 441 MWe. KEMA Consulting Scope:

By order of Gas Natural, KEMA Netherlands B.V. witnessed the performance test of unit 1 and unit 2 at the combined cycle power plant Central Termica de Ciclo Combinado de Plana del Vent, l’Hospitalet de l’Infant, Spain, conducted in July 2007. The performance tests have been carried out by the main contractor General Electric. The tests have been performed according to the GE test procedure. Benefit to Client: The purpose of the measurement was to verify the guarantees as given in the purchase

contract by General Electric. The guarantees are given at base load, 75% and 50% on natural gas and at base load on liquid fuel. ----------------------------------------------------------------------------------------------------------------------Client(s):

Ranhill Powertron

Project title: Performance Testing of Four Gas Turbines of the Teluk Salut power Station at

Kota Kinabalu, Malaysia for the Benefit of the Power Purchase Agreement 2006-2007 Year:  2007

Period:

Mar 03, 2006 - Dec 31, 2007

Project Description:

KEMA has been assigned by the Client to carry out performance tests regarding four gas turbines located at Teluk Salut power station in Kota Kinabalu, Sabah, Malaysia. The performance tests were carried out in order to determine the specific performance indicators for heat rate and power output. power output as dependable capacity) is a requirement following the PPA. KEMA Consulting Scope:

Each gas turbine has been tested for power output and heat rate in sequence. The plant comprises four GE, Type MS6001B gas turbines. Determination of the heat rate was done at base load as well as at 90, 80, 70, 60 and 40 per cent load. The tests have been performed in December 2006 and July 2007. The results were reviewed and compared with the results of earlier tests carried out in 2002 and 2003. -----------------------------------------------------------------------------------------------------------------------

Client(s):

NEM

Project title: Execution of the performance tests of the HRSG of unit 3 of the 3 x 300 MWe

GTCC Ribatejo power plant east of Lisbon, Portugal Year:  2006

Period:

Sep 01, 2005 - May 31, 2006

Project Description:

The Ribatejo power plant consists of three equal units, comprising a Siemens SGT5-4000F gas turbine, a 3 pressure reheat Heat Recovery Steam Generator (HRSG) and a condensing steam turbine. The third HRSG will be tested for thermal performance in accordance with the performance test procedure. KEMA is ordered by NEM to: - supply calibrated instruments for measurements on the exhaust gas side, and water/steam side of the HRSG of unit 30 installation of instruments on site and related work - execution of the test programme execution of flue gas grid temperature measurements - submission of a preliminary test report on site - writing of a final performance test report, with all test data, calculations, calibration certificates, HRSG operating history, test observations, executive summary and a discussion of the results. ----------------------------------------------------------------------------------------------------------------------Client(s):

NEM

Project title: Execution of performance tests of two NEM heat recovery steam generators of

the new built 750 MWe North Power Station in Cairo, Egypt based on two GE Frame 9FA gas turbines Year:  2006

Period:

Nov 01, 2005 - Jun 30, 2006

Project Description:

The Frame 9FA gas turbines are each ISO-rated at 256 megawatts. The total output of the Cairo North expansion (Cairo North II) will be 764 megawatts in combined-cycle, base load operation. Natural gas will be the primary fuel, with light distillate as the back-up fuel. The Cairo North Power Station is owned and operated by Cairo Electricity Production Company. The Cairo North Power Station is based on a 750 MW Combined Cycle configuration which consists of two GE Frame 9FA gas turbines, two NEM three pressure heat recovery steam generators (HRSG) and one steam turbine. The two HRSG’s are tested at the same time for thermal performance according to the NEM performance test procedure, which is in accordance with ASME Test Code PTC 4.4. The performance tests take place in January 2006.

KEMA Consulting Scope:

KEMA executes the following works: - supply of calibrated instruments for measurements on the exhaust gas side and water/steam side of the two HRSG units - assembly and removal of the instruments on site and related work - execution of the performance tests - submission of a preliminary test report on site - submission of a final performance test report, with all test data, final fuel analysis, comprehensive calculations, calibration certificates, HRSG operating history, test observations, executive summary and discussion of the test results. Benefit to Client: Independent determination of the guaranteed key performance parameters enabling NEM to

finish the contract in a proper way. ----------------------------------------------------------------------------------------------------------------------Client(s):

Gas Natural

Project title: Witnessing of the performance tests of the 400 MWe CCGT unit of the

Escombresas power plant near Cartagena, Spain based on an Alstom GT26B gas turbine Year:  2006

Period:

Dec 01, 2005 - Jun 01, 2006

Project Description:

As part of the planned construction programme of new gas fired generating plants, the Cartagena power project is located in the Escombreras Valley on the Mediterranean coast in Cartagena, Spain. The EUR 750 million project includes the development, construction, operation and financing of 3 x 400 MWe combined cycle gas turbine power station with a gross capacity of 1,200 MWe. Due for completion in 2006, it will is the largest independent power project in Spain and one of the largest in Europe. The units can fire natural gas and diesel fuel. KEMA received the order from Gas Natural to witness the guarantee tests, to be performed by Alstom. The unit is based on an Alstom GT26B gas turbine generator set in combination with condensing steam turbine generator set and a heat reovery steam generator (HRSG). KEMA works comprises: - review of the performance test procedure submitted by Alstom - consultancy for Gas Natural during the kick-ff meeting - review of the calibration certificates of the instrumentation to be used for the performance tests - review of the measured performance test data - review of the corrections of the calibrated test equipment - witnessing of the performed test programme - review of the preliminary and final test results - submission of an independent final test report.

Benefit to Client: Independent determination of the guaranteed key performance parameters enabling Gas

Natural and Alstom to finish the construction period in a proper way and start with commercial operation. ----------------------------------------------------------------------------------------------------------------------Client(s):

Total Tractebel Emirates O&M Company

Project title: Independent gas turbine performance testing at the Al Taweelah A1 power

plant in Abu Dhabi Year:  2006

Period:

Jun 01, 2006 - Dec 31, 2006

Project Description:

Al Taweelah A1 Power Station in Abu Dhabi is operated by Total Tractebel Emirates OM Company (TTE OM). TTE OM Co. has requested KEMA to assist them with the power plant performance tests which are scheduled to be performed in June, October (before hot gas path inspection) and November 2006 (after hot gas path inspection). The plant is capable of producing 1,350 MW of power (net) and 84 Million Imperial Gallons per Day (MIGD) of demineralized water. The plant has 8 GE Frame 9 units (3 existing 9151E and 3 new 9171E) of about 100 MW each. Generally the scope of work comprises: - carry out a site inventory visit to determine what type of test equipment is needed and to discuss the actual performance test program in advance - consultancy services to review, draft and discuss the power plant performance test procedures - check of test and station equipment used during the performance tests, all tests will need to be carried out with high accuracy calibrated equipment - execution of the performance test at 100 (both with evaporator coolers on and off), 85, 70 and 55 %of base load, in total 5 load points. The performance test has to be carried out 3 times: in June, October (before the hot gas path inspection) and November 2006 (after the hot gas path inspection) - evaluation and calculation of performance test results - reporting of the tests. ----------------------------------------------------------------------------------------------------------------------Client(s):

Union Water & Electricity Company (UWEC)

Project title: Net Dependable Capacity and performance testing of the UWEC 500 MWe

GE Frame 9E based GTCC Fujeira power plant in the United Arab Emirates Year:  2006

Period:

Aug 23, 2006 - Nov 30, 2006

Project Description:

Union Water Electricity Company operates a 500 MWe / 100 MIGD power and water desalination plant in the Emirate of Fujeirah. UWEC has granted KEMA the order to carry out a NDC test and plant performance test at site. This in order to demonstrate the exact plant performance and NDC figures. The plant consists of four GE Frame 9E gas turbines, four supplementary fired heat recovery steam generators, two Siemens back pressure steam turbines, five multi stage flash evaporators and a revered osmoses plant. The plant is located at Fujeirah, one of the United Arab Emirates. The works are performed in three phases: 1) an inventory visit plus assistance in drafting the correct test procedure 2) a performance test session including preliminary reporting 3) a NDC test session including preliminary reporting The scope of work comprises: - assistance with reviewing the existing performance test and NDC test procedures - to carry out a NDC test - to carry out a plant performance test on individual components and to evaluate the combined plant performance - report on the NDC test as well as on the performance tests of individual units. Final reporting is issued upon completion of the on-site works. ----------------------------------------------------------------------------------------------------------------------Client(s):

AES Kelanitissa

Project title: Execution of a performance test at the Kelanitissa combined cycle power plant

in Colombo, Sri Lanka after a major gas turbine overhaul Year:  2006

Period:

Sep 01, 2006 - Dec 31, 2006

Project Description:

By order of AES, KEMA carried out a performance test at the combined cycle power plant of AES Kelanitissa, Colombo, Sri Lanka. The test was based on the combined cycle as a unit. Regarding the gas turbine, separate calculations were required to determine the results of the modification carried out in the summer of 2006. The purpose of this performance test was the determination of power output and heat rate at full load and at three part load conditions. Next to the unit performance, specific performance values regarding the gas turbine were determined in order to define the power output as well as heat rate considering the modifications as carried out by BHEL. The AES Kelanitissa Power Plant was constructed by Larsen Tubro, Gujarat, India on an EPC basis. Final commercial operation started in the second half of 2003. The unit consists of one GE-PG9171E gas turbine, one HRSG manufactured by LT and one double extraction and condensing steam turbine, manufactured by BHEL. -----------------------------------------------------------------------------------------------------------------------

Client(s):

Lurgi Lentjes

Project title: Guarantee measurements of the 25 MWe combined heat and power plant

Duisburg III/B of Stadtwerke Duisburg Year:  2006

Period:

Aug 27, 2006 - Dec 31, 2006

Project Description:

The existing Duisburg III power plant is modernized in the years 2004-2006. There have been 2 GE PG6111FA (6FA+e) gas turbines and three pressure heat recovery steam generators installed in front of the existing bleeding condensation turbine. The new power plant generates a maximum power output of 225 MWe. Lurgi Lentjes as EPC-contractor granted KEMA the order to perform the guarantee measurements of the new modernized power plant. KEMA performed the following works: - preparation of the measurements, including the submission of the test procedure and installation of calibrated test equipment to measure the key process values - execution of the guarantee measurements based on 5 test during natural gas firing - processing of all test values, reporting and testing against the contract values. ----------------------------------------------------------------------------------------------------------------------Client(s):

Al-Rusail Power Company SAOC

Project title: Independent Gas Turbine Performance Testing at Al Rusail Power Station in

Oman Year:  2006

Period:

Mar 01, 2006 - Dec 31, 2006

Project Description:

Al Rusail Power Station in the Sultanate of Oman consists of eight open cycle GE frame 9E gas turbines. Due to the enactment of the Omani privatization law the electricity sector will be unbundled and restructured. The first power generation asset sold by the state to the private sector is Rusail Power Station. To assist the owner KEMA is requested to provide independent performance testing for the following purposes: • to test the turbines in order to provide independent performance information to bidders to assist in preparing their bids • to establish the demonstrated capacity for contract year 2 of the Power Purchase Agreement.