STEAM TURBINE RETROFITS

© Mechanical Dynamics & Analysis, Ltd., 2008A Wholly-Owned Subsidiary of Hitachi America Limited

STEAM TURBINE RETROFITS29 British American Blvd.Latham, NY 12110Phone: 518-399-3616Fax: 518-399-3929

For More Information, Please Call: (518) 399-3616

Load demand, fi nancial pressures and aging steam turbine generators have created the need to extend longevity and reliability. MD&A / Hitachi offer competitive solutions for addressing reliability, life extension and capacity demands by providing retrofi t solutions for large steam turbine generators. MD&A / Hitachi steam turbine retrofi ts capture the latent potential of power plant auxiliary systems and retain thermal performance, providing the cost-effective recovery and enhancement of turbine effi ciency.

Experience And Synergies Make The Difference

WORLDWIDE INSTALLED CAPACITY

Highly regarded innovations in steam turbine

technology have set Hitachi apart as a leader in

global power generation equipment, establishing

Hitachi as the fastest growing manufacturer of

steam turbine capacity in North America.

HP, IP, HIP, LP Rotors

High-Effi ciency Uprates

Redesigned First Stage

MD&A / Hitachi offer comprehensive impulse and reaction steam turbine retrofi t packages for HP, HIP, IP and LP turbines. MD&A / Hitachi provide owners with options to address needs for single and multi-section retrofi ts and upgrades.

MD&A / Hitachi steam turbine retrofi t options support:

• HIP opposed-fl ow turbines with four-fl ow LP sections• HP / IP individual confi guration turbines with four-fl ow LP sections• HIP opposed fl ow turbines in single casing, double-fl ow LP section• Reaction type large steam turbines

Scope May Include: • Advanced, high-effi ciency Continuous Cover Blades

(CCB’s) for increased output and reliability• Redesigned high-effi ciency HP fi rst stage• Advanced steampath laminar nozzle blades and

diaphragms for improved effi ciency• Boreless, monoblock rotors incorporating stress-

reducing geometries• Advanced technology Guardian ® Packing and Vortex

Shedder ® seals for reduced leakage• Redesigned exhaust hood diffuser to reduce static

pressure losses• Flange-type seal for expansion pipe at inner casing

steam inlet

Impulse / Reaction Steam Turbine Retrofi ts

MD&A / Hitachi Retrofi t Advantages • Improved reliability and effi ciency• Increased capacity• Extended intervals between maintenance• Design that captures latent cycle potential• Worldwide retrofi t project experience• Ease of serviceability• 24-Hour access to engineering support

• Project management• Technical direction and field

engineering• Craft labor and supervision• On-site critical path scheduling

• Comprehensive portable machining capabilities

• Turnkey main valve services• Balance and alignment engineers• Component manufacturing• Performance testing

• Complete generator services• Distortion correction services• Instrumentation and control

systems engineering• Life assessment engineering

Rotor Replacement

Journals & Bearings

Stator Rewinds

HP Valve Repair Generator Field Rewinds Shell Repair

As a provider of turbine-generator components and services, MD&A is known for its ability to provide experienced engineers and comprehensive solutions. More than two decades of outage and upgrade management experience and many of the best minds in the industry have helped MD&A build on a reputation as a premier provider of engineering and outage services.

Recognized Project Experience

STEAM TURBINE RETROFITS • Rotors • Casings • Diaphragms • BladesSTEAM TURBINE RETROFITS • Outage Services • Generator • Machining • Valves

Portable MachiningCAD Engineering Component RepairNozzle Design

Advanced Turbine DesignHitachi’s Advanced Designs Improve Performance By:

• Increased ratio of blade length to axial width - Reducing blade / nozzle end-wall losses• Optimization of stage reaction - Reducing differential pressure across each stage• Reduced root diameter for increased stage count• A modifi ed blade profi le - Reducing blade / nozzle profi le losses• Incorporating Guardian ® Packing and Vortex Shedder ® seals• Usage of Continuous Cover Blades (CCB’s)

MD&A / Hitachi maintain state of the art manufacturing and service facilities throughout Japan, Canada and the USA, including a 100,000 sq. ft. turbine-generator repair facility located in St. Louis, MO. These combined resources allow MD&A / Hitachi to rapidly provide high quality turbine components and services. Focusing on the details has made MD&A / Hitachi a recog-nized name in the global power generation industry.

Optimized Blade Cover

CCB Technology

Advanced Vortex NozzlesBoreless Monoblock Rotors

Continuous Cover Blades• High reliability• Mono-block blade structure• Interlocking integral covers• Elimination of tie-wire at mid-span,

where applicable - Reduced vane stress levels• Less susceptible to stress corrosion

cracking (SCC) - Fewer locations for deposits• Higher back pressure operation• Stellite erosion shield

Guardian ® Packing Vortex Shedders ®

Guardian ® Packing & Vortex Shedder ® Seals • Applicable to any OEM design turbine• Prevent damage to seal teeth during moderate rub(s)• Operate within any labyrinth seal ring application or location• Function effectively under all pressure conditions • Demonstrated unit reliability and seal degradation performance• Contribute to extended overhaul intervals• Retain unit heat rate longer than conventional seals• Increase unit effi ciency by as much as 2%-5%

L-0 Blades L-1 Blades26” 17.41”, 16.59”30” 17”

33.5” 20.9”

STEAM TURBINE RETROFITS • Rotors • Casings • Diaphragms • Blades • Rotors • Casings • Diaphragms • BladesSTEAM TURBINE RETROFITS

Portable MachiningCAD Engineering Component RepairNozzle Design

Advanced Turbine DesignHitachi’s Advanced Designs Improve Performance By:

• Increased ratio of blade length to axial width - Reducing blade / nozzle end-wall losses• Optimization of stage reaction - Reducing differential pressure across each stage• Reduced root diameter for increased stage count• A modifi ed blade profi le - Reducing blade / nozzle profi le losses• Incorporating Guardian ® Packing and Vortex Shedder ® seals• Usage of Continuous Cover Blades (CCB’s)

MD&A / Hitachi maintain state of the art manufacturing and service facilities throughout Japan, Canada and the USA, including a 100,000 sq. ft. turbine-generator repair facility located in St. Louis, MO. These combined resources allow MD&A / Hitachi to rapidly provide high quality turbine components and services. Focusing on the details has made MD&A / Hitachi a recog-nized name in the global power generation industry.

Optimized Blade Cover

CCB Technology

Advanced Vortex NozzlesBoreless Monoblock Rotors

Continuous Cover Blades• High reliability• Mono-block blade structure• Interlocking integral covers• Elimination of tie-wire at mid-span,

where applicable - Reduced vane stress levels• Less susceptible to stress corrosion

cracking (SCC) - Fewer locations for deposits• Higher back pressure operation• Stellite erosion shield

Guardian ® Packing Vortex Shedders ®

Guardian ® Packing & Vortex Shedder ® Seals • Applicable to any OEM design turbine• Prevent damage to seal teeth during moderate rub(s)• Operate within any labyrinth seal ring application or location• Function effectively under all pressure conditions • Demonstrated unit reliability and seal degradation performance• Contribute to extended overhaul intervals• Retain unit heat rate longer than conventional seals• Increase unit effi ciency by as much as 2%-5%

L-0 Blades L-1 Blades26” 17.41”, 16.59”30” 17”

33.5” 20.9”

STEAM TURBINE RETROFITS • Rotors • Casings • Diaphragms • Blades • Rotors • Casings • Diaphragms • BladesSTEAM TURBINE RETROFITS

HP, IP, HIP, LP Rotors

High-Effi ciency Uprates

Redesigned First Stage

MD&A / Hitachi offer comprehensive impulse and reaction steam turbine retrofi t packages for HP, HIP, IP and LP turbines. MD&A / Hitachi provide owners with options to address needs for single and multi-section retrofi ts and upgrades.

MD&A / Hitachi steam turbine retrofi t options support:

• HIP opposed-fl ow turbines with four-fl ow LP sections• HP / IP individual confi guration turbines with four-fl ow LP sections• HIP opposed fl ow turbines in single casing, double-fl ow LP section• Reaction type large steam turbines

Scope May Include: • Advanced, high-effi ciency Continuous Cover Blades

(CCB’s) for increased output and reliability• Redesigned high-effi ciency HP fi rst stage• Advanced steampath laminar nozzle blades and

diaphragms for improved effi ciency• Boreless, monoblock rotors incorporating stress-

reducing geometries• Advanced technology Guardian ® Packing and Vortex

Shedder ® seals for reduced leakage• Redesigned exhaust hood diffuser to reduce static

pressure losses• Flange-type seal for expansion pipe at inner casing

steam inlet

Impulse / Reaction Steam Turbine Retrofi ts

MD&A / Hitachi Retrofi t Advantages • Improved reliability and effi ciency• Increased capacity• Extended intervals between maintenance• Design that captures latent cycle potential• Worldwide retrofi t project experience• Ease of serviceability• 24-Hour access to engineering support

• Project management• Technical direction and field

engineering• Craft labor and supervision• On-site critical path scheduling

• Comprehensive portable machining capabilities

• Turnkey main valve services• Balance and alignment engineers• Component manufacturing• Performance testing

• Complete generator services• Distortion correction services• Instrumentation and control

systems engineering• Life assessment engineering

Rotor Replacement

Journals & Bearings

Stator Rewinds

HP Valve Repair Generator Field Rewinds Shell Repair

As a provider of turbine-generator components and services, MD&A is known for its ability to provide experienced engineers and comprehensive solutions. More than two decades of outage and upgrade management experience and many of the best minds in the industry have helped MD&A build on a reputation as a premier provider of engineering and outage services.

Recognized Project Experience

STEAM TURBINE RETROFITS • Rotors • Casings • Diaphragms • BladesSTEAM TURBINE RETROFITS • Outage Services • Generator • Machining • Valves

For More Information, Please Call: (518) 399-3616

Load demand, fi nancial pressures and aging steam turbine generators have created the need to extend longevity and reliability. MD&A / Hitachi offer competitive solutions for addressing reliability, life extension and capacity demands by providing retrofi t solutions for large steam turbine generators. MD&A / Hitachi steam turbine retrofi ts capture the latent potential of power plant auxiliary systems and retain thermal performance, providing the cost-effective recovery and enhancement of turbine effi ciency.

Experience And Synergies Make The Difference

WORLDWIDE INSTALLED CAPACITY

Highly regarded innovations in steam turbine

technology have set Hitachi apart as a leader in

global power generation equipment, establishing

Hitachi as the fastest growing manufacturer of

steam turbine capacity in North America.

STEAM TURBINE RETROFITS

© Mechanical Dynamics & Analysis, Ltd., 2008A Wholly-Owned Subsidiary of Hitachi America Limited

STEAM TURBINE RETROFITS29 British American Blvd.Latham, NY 12110Phone: 518-399-3616Fax: 518-399-3929