Gas Turbine Modernization & Upgrades
Increase performance and reduce operating costs
© Siemens AG 2015. All rights reserved.
Modernization & Upgrade – Benefits
Modernization and upgrades can be offered under the following categories:
S7-300 TM Control System
MK2 Control Systems (obsolete in 2013)
Halon Fire & Gas (discontinued)
CO2 water mist solutions
HEPA Air Filtration
Improved availability
Improved reliability
Reduced degradation
Reduced fuel burn
Uprates from 4 to 15 MW
Secondary steam injection
Turbine compressor cleaning
Core engine blade coating enhancements
© Siemens AG 2015.
2013. All rights reserved.
Hazardous atmosphere
Fire & gas system
Personal safety devices
Noise attenuation
ISCAP / PI modifications
Fuel system upgrades
Block & vent valves
Intelligent displays
Latest controls
Remote monitoring
HEPA Air Filtration
Dry low emissions
Water injection
Steam injection: primary / secondary
Block/Bleed Valve
Integrated Fuel Valve
Modernization & Upgrades – Health & safety
Up-grade can generally be
offered under the following
categories:
CCc
Air
Gas Vent
BZc
• Hazardous atmosphere
• Fire & gas systems
• Personnel safety devices
• Noise attenuation
• ISCAP (PIB) modifications
Turbine Control Module
( TCM )
Fuel In
Fuel Out
CAc
Off-Skid Double Block n Vent
© Siemens AG 2015.
2013. All rights reserved.
CBc
Off-Skid Double Block n Vent
Modernization & Upgrades – Health & safety
Up-grade can generally be
offered under the following
categories:
• Hazardous atmosphere
• Fire & gas systems
• Personnel safety devices
• Noise attenuation
• ISCAP (PIB) modifications
© Siemens AG 2015.
2013. All rights reserved.
Modernization & Upgrades – Reliability
Improved reliability can often
be achieved with modifications
to the following:
• Fuel system upgrades
• Block & vent valves
• Intelligent display systems
• State of the art controls
• Automatic pressure and temperature
compensation
• Gas shut-off system, designed to latest
UK/European guidelines/International
standards/codes
• Simplified design, resulting in less
components than existing systems
• Monitoring of shut-off valve positions
• Remote monitoring systems
• Supplied as a fully assembled
component, minimizing installation time
• Electric variable guide vanes
• Advanced diagnostics and fault finding
information
• Optimizes gas turbine performance adjusts fuel delivery to meet demand
© Siemens AG 2015.
2013. All rights reserved.
Modernization & Upgrades – Reliability
Improved reliability can often
be achieved with modifications
to the following:
• Touch screen HMI simulates the
original control system graphics
• Fuel system upgrades
• Does not replace the
Independent, hard-wired,
‘emergency stop’ circuit
• Block & vent valves
• Intelligent display systems
• State of the art controls
• Remote monitoring systems
• Abnormal conditions are
displayed as time tagged alarm
or trip messages
• Electric variable guide vanes
• Provides the operator with
a first-line diagnostic tool
© Siemens AG 2015.
2013. All rights reserved.
Modernization & Upgrades – Reliability
Improved reliability can often
be achieved with modifications
to the following:
• Enhanced reliability,
when compared to older
pneumatic/hydraulic systems
• Fuel system upgrades
• Reduced number of
components/less maintenance
• Block & vent valves
• Intelligent display systems
• State of the art controls
• Remote monitoring systems
• Electric variable guide vanes
• Reduced maintenance costs
and downtime
• Improved spare parts supply
• Compatibility with current
engine build standards
• CO turndown capability
at part loads
© Siemens AG 2015.
2013. All rights reserved.
Modernization & Upgrades – Environment
Consideration for the latest IED directives
incorporating:
• Siemens commitment to environmental issues
• Emissions legislation becoming more stringent on
• NOX (Nitrogen Oxide)
• Dry low emissions
• CO (Carbon Monoxide)
Compromise
Zone
CO
NOX
• UHC (Un-burnt Hydrocarbons)
• and smoke (Bacharach Level)
Emission
• Water /steam injection of conventional combustion
system increases combined heat and power costs:
levels
• Capital equipment
• Maintenance
Excessive
CO
Excessive
NOX
Reaction temperature
© Siemens AG 2015.
2013. All rights reserved.
Modernization & Upgrades – Environment
Typical diffusion
flame combustor
Typical DLE combustor
Diffusion
combustion
© Siemens AG 2015.
2013. All rights reserved.
Dry low emissions
combustion
Modernization & Upgrades – Obsolescence/controls
Over 60 years of control
system history…
• Siemens controls offer
longevity in service
• Benefit from our
continuous developments
© Siemens AG 2015.
2013. All rights reserved.
• Siemens PLC technology
• Site reprogrammable
• Replacement control cabinets
• Turbine sensor analysis
• Replicates the original functions
• Remote monitoring
• Fault annunciation/diagnostics
• Trending/logging
Modernization & Upgrades – Calm controls
Using experience to calm things down …
Core engine software
• Under existing operating philosophy, a single event would shut the turbine
down to maximize protection
• New philosophy
• Reduces the duration of trips
• Adding delay before trip initiated
• Alarm/trip limits increased/widened
• Some critical events still initiate immediate shutdown (e.g. overspeed)
• Supplied in the form of new software modules
• Configured to suit the customer’s specific installation
• Upgrade split into two groups:
• Core engine & package software
© Siemens AG 2015.
2013. All rights reserved.
Package software
Modernization & Upgrades – Summary
Making the most of todays technology on yesterdays machinery
© Siemens AG 2015.
2013. All rights reserved.