110606-9 KA26 GT26 Technology Update Vietnam - Handout

Combined Cycle Power PlantsKA26 / GT26 Technology Update

Viet Nam Electricity EVNO Mon PMB / PECC2 / PECC3

Vietnam, 6th–9th June 2011

Remy GUILLEMET, Arno STEIN, Vasu SWAMI

© ALSTOM 2011. All rights reserved. Information contained in this document is indicative only. No representation or warranty is given or should be relied on that it is complete or correct or will apply to any particular project. This will depend on the technical and commercial circumstances. It is provided without liability and is subject to change without notice. Reproduction, use or disclosure to third parties, without express written authority, is strictly prohibited.

CCPP KA26 GT26 Technology Update - as - June 2011 - P 2

Alstom Power Organisation

SteamSteam NuclearNuclear ThermalRenewables

ThermalRenewablesHydroHydroGas

M. CoxonGas

M. Coxon WindWindPower

Automation & Controls

Power Automation & Controls

ThermalServicesThermalServices

Alstom

AlstomPatrick Kron

Chairman & CEO

TransportPhilippe Mellier

President


President

GridHenri Poupart

President

GridHenri Poupart

President

PowerPhilippe Joubert

President


President

SteamSteam NuclearNuclear ThermalRenewables

ThermalRenewablesHydroHydroGas

M. CoxonGas

Mark Coxon WindWindPower

Automation & Controls

Power Automation & Controls

ThermalServicesThermalServices

Alstom

AlstomPatrick Kron

Chairman & CEOAlstom

AlstomPatrick Kron

Chairman & CEO


President


President

GridHenri Poupart

President

GridHenri Poupart-Lafarge

President


President


President



Europe/LAM/AfricaJ. Wick

Middle East/IndiaP. Kunz

AsiaP. Radue

Finance/ISP. Rosa

Sales & MarketingM. Boller

QualityG. Carty(acting)

Legal/Contract MgtI. Johnson

HRS. Ancelin

Project/Eng OfficeG. Timoney

GasM. Coxon

NAMJ. Schmidli

(interim)

Gas ProductsJ. Schmidli

Supply ChainM. Ducommun

C&CR. Bachmann

EHSG. Carty

Sup

port

Func

tions

Ope

ratio

nal

Func

tions

Pro

duct

s &

R

egio

nsGas Business Organisation

Strategic PlanningA. Wahler



Kuala Lumpur Execution Center

Tendering

F. Brady

Project Execution

PDs

Engineering

V. UthrapathyQuality

M. Mohamed

Planning & SchedulingM. Frisenda

Execution CentreKuala Lumpur

P. Radue

Human Resources H.Menon

Sales & Marketing R.

Guillemet

Finance & ControlB. Lazard

Construction & Commissioning

J. Spurr

Legal & Contract ManagementStuart Connor

Quality, EHS,Processes&Tools

M. Mohamed

ProjectManagement

F. Brady

Project Execution

PDs

Procurement & Logistics

B. Anthony



KL Execution Centre: Key Data

• Headcount

- 770 (570 EPC, 200 Service)

• Expertise

- Full EPC Capabilities for Combined Cycle and Single Cycle Power Plants

- Global Hub for Construction & Commissioning

• Sizing for Parallel Execution

- Three 800 MW Block Multi Shaft Projects

- Two 450 MW Blocks Single Shaft Projects

• History

- Office established in June 1992



Agenda

Introduction

KA26 Performance and Configuration

Phased Construction and By-Pass Stack

Plant IntegratorTM approach

KA26 Key Benefits / Features

References / Experience

Summary

Inspection Regime / After-Sales Services



Superior operational flexibility- ‘Clean Power’ down to 30% GT load- Low combined cycle startup times below 50 min.- “Overnight parking” capability at about 20% CC load

Superior fuel flexibility- Able to operate on the widest range of

natural gas compositions (Wobbe Index ± 10%)• Ready for changing natural gas sources and LNG

Reliable performance at full and part load- Up to >59% net plant efficiency- Optimised for Combined Cycle operation, delivering high full load and

superior part load efficiencies- Alstom air inlet cooling systems for “EOH-neutral” on-line

power augmentation

Introduction Demonstrated Advantages KA26 / GT26



Agenda

Introduction



Plant IntegratorTM Approach



Summary




KA26 CCPP ConfigurationsThe Alstom KA26 Products

KA26-1 ‘Single-Shaft’• Optimised 431MW CCPP Concept• Sequential-combustion technology (GT26)• Floor-mounted Power Train• SSS-clutch between ST and GT+ TOPGAS Gen• Patented Moveable Generator Foundation• High Operational & Fuel Flexibility• Core components / competencies in-house• No Auxiliary Boiler required• 100% Steam Bypass

KA26-2 ‘Multi-Shaft’• Optimised 862MW CCPP Concept• Sequential-combustion technology (GT26)• Drum- and Once-Thru HRSG Ref. Concepts• 59% Net Efficiency capability• High Operational & Fuel Flexibility• Core components / competencies in-house• TOPAIR Generators as standard• 100% Steam Bypass

‘Reference Plant’ platforms for customisation



KA26 CCPP ConfigurationsThe KA26-2 Multi-Shaft ‘Reference Plant’

All core components & competencies under one roofST + Condenser (Alstom)

Drum- orOnce-ThroughHRSG (Alstom)

GT (Alstom)

Generators (Alstom)

Plant Control System(Alstom)

Plant Integrator (Alstom)Turnkey Management (Alstom)



KA26 CCPP ConfigurationsOne Phase Construction



KA26 CCPP ConfigurationsKA26-2 MS Site Layouts Variants 1/2

Indicative Plant Footprints(w/o Fuel Oil Storage and HV-Switchyard)

• Cooling Tower 215m x 180m = ~39’000 m2

• Direct Cooling 165m x 180m = ~30’000 m2

• ACC 280m x 180m = ~50’000 m2

CoolingTower

ACC



CoolingTower

ACC

KA26 CCPP ConfigurationsKA26-2 MS Site Layouts Variants 2/2

Indicative Plant Footprints(w/o Fuel Oil option, w/o HV-Switchyard)

• Cooling Tower 240m x 180m = ~43’200 m2

• Direct Cooling 190m x 180m = ~34’200 m2

• ACC 240m x 180m = ~43’200 m2

ACC



Agenda

Introduction






Summary




Plant Integrator™ approach Project Specific Optimization

Hot-end and cold-end optimization to suit the cycle



Plant Integrator™ approach KA26-1 Single-Shaft - Grain CHP (UK)

Continuous heat supply to nearby LNG terminal

Customer: E.ON (UK)Output: 1275 MWType: Combined-Cycle Power PlantConfiguration: 3 x KA26-1 SS CHPScope: Turnkey EPC

Customer: E.ON (UK)Output: 1275 MWType: Combined-Cycle Power PlantConfiguration: 3 x KA26-1 SS CHPScope: Turnkey EPC

• Higher operation flexibility• Process heat supply to

adjacent LNG terminal for increased fuel utilisation

• Full scope simulation to optimise plant operation



• Higher operation flexibility including duct-firing

• Flexible solution to meet special architectural requirements

• Full scope simulation to optimise plant operation

Customer: Centrica Langage LtdOutput: 878 MWType: Combined-Cycle Power PlantConfiguration: KA26-2 Multi-Shaft Scope: Turnkey EPC

Customer: Centrica Langage LtdOutput: 878 MWType: Combined-Cycle Power PlantConfiguration: KA26-2 Multi-Shaft Scope: Turnkey EPC

Plant Integrator™ approach KA26-2 Multi-Shaft - Langage (UK)

Unique Plant IntegratorTM capabilitiesfor high value, availability & performance



Plant Integrator™ approach Industrial Apps - Fujairah 2 IWPP (UAE)

Highest flexibility between water and power production

Customer: Intl Power/Marubeni/ADWEAOutput: 2000 MW + 130 MIGDType: CCPP+Desalination FacilityConfiguration: 2xKA26-2 MS + KA26-1Scope: Turnkey EPC

Customer: Intl Power/Marubeni/ADWEAOutput: 2000 MW + 130 MIGDType: CCPP+Desalination FacilityConfiguration: 2xKA26-2 MS + KA26-1Scope: Turnkey EPC

• Higher operation flexibility• Large-scale industrial

application• Alstom Plant Integrator™

approach• Derived from Reference

Plant



Agenda

Introduction






Summary




Phased Construction and By-Pass Stack Considerations



By-passstack

Combined Cycle (CC) operation

Open Cycle (OC)

operation

Diverter damper ormodular exchangeable elbow

Gas turbine

HRSG / Boiler GT13E2 CCPP Kuala Langat, Malaysia

Always feasible but not always the best solution




• A by-pass stack typically:- Adds plant costs- Delays the start of combined-cycle plant commercial operation- Decreases plant availability- Deteriorates plant environmental impact (visual, noise, efficiency)

• A by-pass stack might only be the best solution for:- Phased construction of the combined-cycle plant

• Emergency power from GT in open-cycle• Phased financing• Late availability of water on-site

- Water steam cycles without 100% steam by-pass- Heavy oil applications with frequent HRSG washing

The best solution… Only in few specific cases !




Diverter damper Modular exchangeable elbow

• Rapid switch possible • Cheaper• More performance

- less leakages• More reliable


2 different design solutions



• Additional investment costs• Loss of plant performance• Lower plant availability• Additional maintenance• Longer footprint• Increased erection time• Negative environmental impact

Phased Construction and Bypass stack Main Issues

By-pass stacks have negative consequences



Additional Investment costs for Bypass Stacks :

Bypass stack Diverter damper Guillotine Expansion joints + longer piping additional civil costs + piling) Additional shipping Related field assembly Air cooler for GT OC operation

MV/LV installations and cabling

Additional safety precautions Higher mechanical erection process ( damper needs to be field assembled on site) etc.

Phased Construction and Bypass stack Additional Costs



• By-pass stacks unsuitable for large high-efficiency CCPPs:

• By-pass dampers for advanced class engines:- Large dimensions (~7m)- Operation under high temperature (600-650°C)- Limited proven experience

• By-pass losses:- Depend on manufacturer & type- Will increase with operating time- Up to 1.5% leakage as average over lifetime

Phased Construction and Bypass stack Loss of Plant Performance

~ 1.5% steam power loss over whole plant lifetime



• Additional component with inherent loss of availability- Additional maintenance- Potential forced outage- Forced shut-down (e.g. because of sealing damage)

• Potential problems- Do not operate when required- Do not operate properly (e.g. stuck in mid open

position, etc.)

• Limited industry experience with large & hot dampers (used behind advanced-class large-size gas turbines)

Phased Construction and Bypass stack Lower Plant Availability



• Maintenance requirement very dependent on type of diverter damper

• Sealing system (stainless steel elastic strips, sealing air valve, etc.)

• Drive mechanism (hydraulic/mechanical), coupling

• Large damper running at >600oC more prone to mechanical integrity problems (e.g. cracks, deformation, ...)

Phased Construction and Bypass stack Additional Maintenance

More complexity, more maintenance



KA26 layout with simple cycle stack

Phased Construction and Bypass stack Longer footprint

~20 m



• Erection & operation in parallel creates constrains:- Health & safety- Insurance- Local regulation

• Open-cycle exploitation adds schedule constraints- GT-capacity guarantee

• Significant delivery time for high-temperature by-pass stack & diverter damper

• More complexity, more risk

Phased Construction and Bypass stack Increased Erection Time

Phased construction will delayoperational start of combined-cycle plant



• Increased visual impact - Longer footprint- Increased total number of stacks

• Potential low frequency noise from damper(not attenuated in HRSG / silencer)

• Lower overall plant efficiency due to parasitic losses

Phased Construction and Bypass stack Negative Environmental Impact



100

200

300

400

500

600

700

18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36

Month after NTP

Tota

l pow

er a

vaila

ble

(MW

)

0

20

40

60

80

100

120

Tota

l ope

ratin

g pr

ofit

(MU

S$)

Availability (MW)Profit (MUS$)

100

200

300

400

500

600

700

18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36

Month after NTP

Tota

l pow

er a

vaila

ble

(MW

)

0

20

40

60

80

100

120

Tota

l ope

ratin

g pr

ofit

(MU

S$)

Availability (MW)Profit (MUS$)

Fully integrated straight constructionwithout by-pass stacks

Phased constructionwith by-pass stacks

Based on assumptions: 2-on-1, same turbines, gas 1.25 $/MBtu, electricity 2.9 $c/KWh, service factor 90%

95 M$

99 M$

23 M$ 23 M$

53 M$ 49 M$

10 M$0 M$

• Quicker available full power, at high CC-efficiency

• Quicker available power, but … not full power & at low SC-efficiency

4 M$ more operating profit9 M$ less investment cost

Large Combined-Cycle Power PlantWith Or Without By-Pass Stack ?

Fully integrated straight construction leads tomore cash & earlier steam generation



Agenda

Introduction




KA26 Key Benefits / Features• Fuel flexibilityReferences / Experience

Summary




Key Benefits / Features Sequential Combustion Technology

Leading combustion technologyfor flexible operation and clean power generation



Key Benefits / Features EnVironmental (EV) Burner

• A standard burner design, used in all Alstom gas turbines

• A simple robust design:- No maintenance-prone cans, transition

pieces, or cross-fire tubes- No burner inspections required- No seasonal tuning necessary

• Perfect air and fuel mixing:- fuel gas injection into high velocity

air stream (vortex)- flame stabilized in combustor with

no contact with burner

Gas

Gasinjection

Vortexbreakdown

Swirler

Gas injection

Burner exit plane

Combustionair

Premixing(Gas Combustion air)

Flame front

Vortex breakdown

Robust & simple - standard burner for all Alstom gas turbines



Key Benefits / Features Sequential EV Burner (SEV)Single Annular

Combustion ZoneSEV Burners Fuel Lances Vortex Generators

(Fuel lance removed)

• Similar mixing principle as in EV-Burner- Fuel injection into vortex

• Retractable dual fuel lance• Spontaneous ignition• Similar cooling principle as in EV-combustor

- Combustor liners convectively cooled with combustion air



• High tolerance to gas variations withouthardware changes:- Wobbe Index +/- 10%- C2+ up to 18%

• Fast acting fuel composition measurement with on-line control

Continuous operation with significant gas variations

C2+ (%)

Key Benefits / Features Gas Characteristics Variations

GT26

Typicalrange± 5%

30

40

50

Wobbe Index (MJ/m3)

16

14

12

10

8

6

4

003 Oct

0914 Nov

0917 Oct

0931 Oct

0928 Nov

09

C2+ (%)



Key Benefits / FeaturesGT26/GT24 C2+ operation range

28

32

36

40

44

48

52

0% 2% 4% 6% 8% 10% 12% 14% 16% 18%C2+ [%]

LHV

[MJ/

kg]

Gascom-

positionmonito-

ring

Change of operatingconcept for

burner protection

6% 18%9%

StandardFuel Gas

(no specialmeasure)



Key Benefits / Features Superior Fuel Gas Flexibility

15105Number of GT24/GT26 Engines with non-standard gases

More then 150’000 OH accumulated experience!

TotalGT26GT24

26197Number of GT24/GT26 engines with non- standard gases

> 1’000’000 OH accumulated experience

TotalGT26GT24



Key Benefits / Features C2+ operation over time demonstrated

2 month change

C2+

[0-1

6%]

Fleet record for continuous running: 236 days (Oct 12th 2010)



Agenda

Introduction




KA26 Key Benefits / Features• Relative PerformanceReferences / Experience

Summary




Baseload

Full Speed No load

Relative GT Load

Inlet Air flow(Inlet Guide Vane Position)

0% 25% 100%Baseload

Full Speed No load

Relative GT Load

Inlet Air flow(Inlet Guide Vane Position)

0% 25% 100%

Key Benefits / FeaturesCCPP Relative Part-Load Performance

• EV temperature maintained high from ~10 - 100% load- low emissions over a

wide load range

• High exhaust temperature maintained between~ 25% - 100% load- high CC part-load efficiency- quick CC start-up time

High performance and low NOx emissions over wide load range

GT ExhaustTemperature

EV Combustor Temperature

SEV Combustor Temperature




80%

85%

90%

95%

100%

40 50 60 70 80 90 100

CCPP Load [%]

Rel

ativ

e C

C E

ffici

ency

Lower Fuel Consumption& CO2 Emissions

Single Combustion*

Sequential Combustion (KA26/KA24)

….. so why might this be important ?Indicative – For Information Only (Not Guarantee Data) * KA13E2 Part-Load Characteristic Curve




High All-round Plant EfficiencyMeans Lower Fuel Consumption & CO2 Emissions

80%

85%

90%

95%

100%

40 50 60 70 80 90 100

CCPP Load [%]

Rel

ativ

e C

C E

ffici

ency

58.5%

57.7%57%

55.6%

53.2%

50.9%

48.4%

51.3%

53.2%

55%

56.7%

57.6%58%

CCPP absolute efficiency

Indicative – For Information Only (Not Guarantee Data)



Key Benefits / FeaturesRel. Part-Load Efficiency (SSPT vs. MSPT)

CCPP Efficiency vs. Power2 x KA26-1 compared to KA26-2

50%

60%

70%

80%

90%

100%

110%

20% 30% 40% 50% 60% 70% 80% 90% 100%Relative Gross Power [MW]

Rel

ativ

e G

ross

Effi

cien

cy [%

]

2 x KA26-1

KA26-2

Best configuration? Depends on expected dispatch regime!Indicative – For Information Only (Not Guarantee Data)



Agenda

Introduction


Phased Construction and By-Pass StackPlant IntegratorTM Approach

KA26 Key Benefits / Features• Start-Up Times (Indicative)References / Experience

Summary




KA26 Key Features & Benefits Faster Hot Start-Up



Agenda

Introduction


Phased Construction and By-Pass StackPlant IntegratorTM Approach

KA26 Key Benefits / Features• Low Load Operation CapabilityReferences / Experience

Summary




Key Benefits / Features NOx Emissions – Clean Combustion

Lowest NOx emissions over CCPP load range40%-100% and below

GT26 Typical NOx Emission

10% 20% 30% 40% 50% 60% 70% 80% 90% 100%

Relative CCPP Load

NO

x E

mis

sion

(vpp

m)

Typical GT26 NOx Emission(measured)

Typical Single CombustorEngine Characteristic

0

25LLOC Area GT operation point depending on ambient conditions



Key Benefits / FeaturesLow Load Operation Capability

• To date, only 2 options open to Generators during the low/negative spark spread periods (typically night-time/weekends) …

1) ‘park’ the CCPP at the minimumstable CCPP load point(ca. 45-60%) where plantstill meets emission regulations

or

2) shut-down

Alstom’s “Low Load Operating Capability” (LLOC) offerscustomers a third option, saving on energy consumption



Key Features & Benefits Low Load Operation Capability

0%

10%

20%

30%

40%

50%

60%

70%

80%

90%

100%

110%

1 2 3 4 5 6 7 8 9 10 11

‘LLOC’ allows KA26/KA24 to park at much lower CC loadoffering significant energy consumption option

Typical Load Rangere. Minimum Stable Load

KA26 Low Load Point

Time

CC

PP R

elat

ive

Load

58.5%

~5‘000 €/h ~860 GJ/h

~7‘500 €/h ~1‘250 GJ/h

~10‘000 €/h ~1‘700 GJ/h

Fuel Burn @ €6/GJ LHV



Key Benefits / FeaturesLow Load Operation Capability

• GT exhaust energy highenough for steam production

• ST stays in full operation

• CCPP parked at ca. 20%relative load (depends onambient conditions)

• Emissions close to base load level

• Power reserve remains online

• Normal and Fast CCPP loadinggradient available

A unique advantage of sequential combustion

2nd combustor off 1st combustor in lean

premix mode



Agenda

Introduction






Summary




References / Experience KA26/KA24 Global Fleet

49 KA26 and 18 KA24 Projects

ALSTOM Gas Turbine Test Power Plant, 1x GT26

red & italic = SCblue = CC Single Shaftblue underlined = CC Multi Shaft

CYCOFOS 1xKA26-1FOS SUR MER 1xKA26-1

TERMOBAHIA 1xKA24-1*

TOCOPILLA 1xKA26-1

DOCK SUD 1xKA26-2

FLEVO 2xKA26-1CLAUS C 1xKA26-3**

RINGSEND 1xKA26-1AGHADA 1xKA26-1

SCANDALE 2xKA26-1GISSI 2xKA26-1*MODUGNO 1xKA26-2

GHANNOUCH 1xKA26-1

ROCKSAVAGE 1xKA26-2ENFIELD 1xKA26-1SHOREHAM 1xKA26-1CORYTON 1xKA26-2LANGAGE 1xKA26-2GRAIN 3xKA26-1*STAYTHORPE 4xKA26-1PEMBROKE 5xKA26-1

RDK 1xKA26-1**KW EMSLAND 1xKA26-2

TPP26 1xKA26-1*

CHIBA 1xKA26-1

PORYONG 4xKA24-2

HAI FU 2xKA24-2

ALIVERI 1xKA26-1

GILBERT 1xGT24BURGIN 2xGT24AGAWAM 1xKA24-1MIDLOTHIAN 4xKA24-1ISLAND COGEN 1xKA24-1*LAKE ROAD 3xKA24-1MILFORD 2xKA24-1BLACKSTONE 2xKA24-1BAYSIDE 1xKA24-1**HAYS 4xKA24-1MIDLOTHIAN II 2xKA24-1BELLINGHAM 2xKA24-1LA PALOMA 4xKA24-1

BESOS 1xKA26-1BESOS 1xKA26-1SAN ROQUE 1xKA26-1SAN ROQUE 1xKA26-1CASTEJON 1xKA26-1CARTAGENA 3xKA26-1CASTEJON 2 1xKA26-1MALAGA 1xKA26-1SOTO DE RIBERA 2xKA26-1

TERGA 3xKA26-1

MONTERREY 2xKA24-1ROSARITO 2xKA24-1HERMOSILLO 1xKA24-1MONTERREY III 4xKA24-1

Status: February 2011

BOWIN 2xKA26-1BANG BO 1xKA26-1KHANG KHOI 2xKA26-2

SWANBANK 1xKA26-1TALLAWARRA 1xKA26-1

TARANAKI 1xKA26-1

SENOKO 1xKA26-1**SENOKO II 2xKA26-1**TUAS CCP5 1xKA26-1KEPPEL IIA 1xKA26-1BANYAN 1xKA26-1

UTRAN 1xKA26-1JEGURUPADU III 2xKA26-1

FUJAIRAH 2xKA26-2; 1xKA26-1** CoGen Projects ** Repowering Projects

Status: March 11



References / Experience KA26/KA24 Fleet Brief

• 136 Units ordered(51 x GT24, 85 x GT26) *) incl. GT26 at the GT Test Power Plant in Birr, CH

- 1 Test Power Plant (Switzerland)- 113 units commercial- 22 GT26 units under construction

- >80% of GT24/26 Fleet installed on EPC Turnkey basis- >50% of GT24/26 Fleet “dual-fuel”

• Fleet Experience:- From “Daily starts and stops” to “base load” operation- Natural gas (also high inert/C2+), oil with online switch-over- Power Augmentation (Air Inlet cooling)

A reliable workhorse with high availability and performance over the life-time of the plant

Status: March 11



References / Experience GT26 Availability, Reliability, Service Factor

Source: Strategic Power Systems Inc.® (SPS)Sample Size: Last 5 Years = 34 (GT26) / 123 (F-class total) 2010 = 32 (GT26) / 119 (F-class total)

KA26 Fleet demonstrating high availability, reliabilityand better-than-average service factor

RAM Statistics (Last 5 Years)

81.1

4

65.4

6

98.2

%

92.3

%

97.3

%

91.3

%

0

10

20

30

40

50

60

70

80

90

100

GT Availability GT Reliability Service Factor

GT26 Avg.F-class Avg.

RAM Statistics (2010)

80.4

9

64.0

3

99.1

%

93.4

%

97.7

%

92.1

%

0

10

20

30

40

50

60

70

80

90

100

GT Availability GT Reliability Service Factor

GT26 Avg.F-class Avg.



CARTAGENA(Gas Natural, Spain)

3 x KA26-1, 1’200 MWOperating since 2006

Plant completion 2 months ahead of schedule

CASTEJON 1 & 2(Hc Energia, Spain)2xKA26-1, 825 MW

>99% plant reliability over >64’000 EOHsince start of commercial operation in 2002

Repeat order with Castejon 2, in operation since 2008

Plant of the year 2009(Diesel & Gas Turbine Worldwide)

References / ExperienceQuality Engineering for winning customers

Satisfied & returning customers



Agenda

Introduction






Summary




• One operating hour can have different influence on GT component lifetime, depending on:- Fuel used- Firing temperature- Power augmentation- Grid support type

• One cyclic event can have different influence on GT componentlifetime, depending on:- Start / stop cycle type

• Highest achieved GT load• Loading gradient level

- Transient events• Frequency response• Load shedding• Sudden extra load demand• Shut-down, load rejection or trip

WOH(Weighted Operating Hours)

WCE(Weighted Cyclic Events)

Inspection Regime / After-Sales ServiceFactors influencing component lifetime



WCE = 1‘200

EOH = 28‘000

WO

H=

24‘000EOH = WOH + 10 x WCE

Equivalent Operating Hours (EOH)

Inspection Regime / After-Sales ServiceGT26 Inspection Concept

Time for C-inspection determinedby earliest of 3 criteria reached

A

B

A

C

300

600

900

1200

Wei

ghte

d C

yclic

Eve

nts

(WC

E)

0 6000 12000 18000 24000

Weighted Operating Hours (WOH)



VisualInspection

A(3-4 days **)

VisualInspection

B(incl. ControlSystem Insp.)(4-5 days **)

Hot Gas PathInspection

C(30 days**)

EOH *35'00035'000 49'00049'000

14'00014'000 42'00042'000

56'00056'00028'00028'000

21'00021'0007'0007'000

BoroscopicGT Inspection

(no burner/cansexchange foreseen,

no combustor tuning)

GT Opening(no shipment of

rotor for refurbishmentor inspection)

Yearly HRSG inspections (minor or major)can be performed during GT outages

* Actual intervals may vary depending on operating regime** Actual inspection duration may vary depending on operating

conditions, outage scope, parts availability, and staff qualification** From generator breaker off to breaker on

Inspection Regime / After-Sales ServiceIntegrated Maintenance Schedule

Maintenance of plant components done in the shadow of GT-maintenance inspections

EOH: Equivalent Operating Hours



Inspection Regime / After-Sales ServiceDifferentiator: Solid Welded Rotor

• One-piece design with forged discs welded together• Applied since 1929 to all Alstom ST and GT rotors• No Scheduled Overhaul / No Re-stacking

No Scheduled Overhaul or Re-stacking, sono associated maintenance costs or down-time



Inspection Regime / After-Sales ServiceGenerator Inspection intervals

Coordinated intervals to manage the scope



Inspection Regime / After-Sales ServiceGT26 Maintenance

Acoustical enclosure and GT Opening



Risk mitigation

O&M

o&M

Inventory management

o&m

Technical consulting

Parts & Services

m

Purchase Order Business Model

Scheduled & unscheduledmaintenance

scheduledmaintenance

Operation support, scheduled & unscheduled maintenance

Operation support and full maintenance

Full operation and full maintenance program

Optimization of costs and performance

Inspection Regime / After-Sales Service Product Offerings

Operation and Maintenance support to suit your needs



Agenda

Introduction






Summary




SummaryKA26 - Benefits

• Efficient- >59% net plant efficiency - Highest part load efficiency

lower CO2 emissions

• Flexible- High operation range

with low NOx Emissions- Lowest load operation

at 20% CCPP load (“Parking”)- Spinning reserve capacity to

full-load in ca. 15 minutes

• Reliable- Above average reliability- >4’000’000 operating hours- 65 KA24/KA26 CCPP projects

Optimised Tailor-made KA24/KA26 Solutions:Clean – Efficient – Flexible – Reliable

η

www.power.alstom.com

Documents

110606-9 KA26 GT26 Technology Update Vietnam - Handout