Lifetime Extension for V-Frame Gas Turbines

The worldwide demand for power continues to grow at a rapid rate. To help our customers better meet energy needs, Siemens offers the latest technologies designed to improve operating plant capability, flexibility, competitiveness and profitability. One Siemens advanced technology product involves Lifetime Extension for V-frame gas turbines.

Our solution

To support the reliable and safe operation of gas turbines beyond the original design life of the components, we offer Lifetime Extension measures for all Siemens gas turbine V-frames.

Major components of the Siemens V-frame gas turbines – especially components of the hot gas path and rotor – are designed for a set operational duration. Our experi-ence shows that for gas turbines being operated beyond the components’ original design life, the risk of operational failure can increase substantially.

These measures have been developed based on our knowledge of the original design parameters and our fleet operating experience as original equipment manu-facturer. Implementation of the V-frame Lifetime Extension measures can not only help reduce operational risk to your unit, but can also help reduce potential down-time due to unscheduled outages or maintenance activities. Also, power and efficiency, which gradually decline during the first 100,000 equivalent operating hours (EOH) or 3,000 starts, can poten-tially be restored or even in some cases increased by implementing new technol-ogies developed since the time of instal-lation.

Scope of supply

The Lifetime Extension outage includes a detailed, unit specific engineering analysis of the operation and maintenance of your gas turbine. We deliver unit specific recommendations through:

Consideration of unit’s available opera-tional history, duty cycle, findings and component sample investigations (unit specific investigation)

Fleet operational history and frame specific modeling (frame specific investigation).

The unit specific investigation includes an evaluation of:

Rotor

Compressor

Turbine

Combustion section

Burners.

Answers for energy.

Performance Enhancement Programs – Gas Turbine

Engineering to help achieve more life with less risk for your gas turbine

Mechanized ultrasonic inspection of disc hub.

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The recommended scope of work to be performed, including modernization and upgrade measures, will be defined with consideration of your long-term operating requirements.

Customer benefits

Benefits may include:

Detailed unit specific engineering analysis of the operation and maintenance of your gas turbine, taking into consideration the specific characteristics of your gas turbine, such as operating mode and unit history, leads to tailored, cost-optimized Lifetime Extension recom-mendations.

Positioning your unit for operation up to another 100,000 EOH or 3,000 starts

Reduction of the operational risk when operating your unit past 100,000 EOH or 3,000 starts

An opportunity to upgrade previous technology with Siemens improved components.

References

Siemens Energy successfully performed Lifetime Extensions for a variety of gas turbines around the world. More than 70 units are back in operation after Lifetime Extension measures including the following V-frame units:

Four units in United States SGT6-2000E (V84.2)

Two units in Great Britain SGT5-2000E (V94.2)

One unit in Indonesia SGT5-2000E (V94.2)

Two units in Turkey SGT5-2000E (V94.2).

In addition, Lifetime Extensions are scheduled for the following units, e.g.:*

Three units in Germany, Finland and Netherlands (V64.3)

Two units in Argentina and Hungary SGT5-2000E (V94.2)

One unit in Argentina SGT5-4000F (V94.3A).

Conceptual illustration of Lifetime Extension impact on risk.

Lifetime Extension process.

For more information please contact your local Siemens sales representative.

Published by and copyright © 2008:Siemens AGEnergy SectorFreyeslebenstrasse 191058 Erlangen, Germany

Siemens Energy, Inc.4400 Alafaya TrailOrlando, FL 32826-2399, USA

For more information, please contact our Customer Support Center.Phone: +49 180 524 70 00Fax: +49 180 524 24 71(Charges depending on provider)E-mail: support.energy@siemens.com

Energy Service DivisionOrder No. E50001-F520-A145-X-4A00Printed in GermanyDispo 05400, c4bs Nr. 1366B DA 10082.

Printed on elementary chlorine-free bleached paper.

All rights reserved. Trademarks mentioned in this document are the property of Siemens AG, its affiliates, or their respective owners.

Subject to change without prior notice. The information in this document contains general descriptions of the technical options available, which may not apply in all cases. The required technical options should therefore be specified in the contract.

Equivalent Operating Hours/Starts

Ris

k

100,000 EOH/3,000 starts

Conceptual illustration only – actual results may vary

Lifetime Extension program designed to help reduce risk of operation

Potential for increased risk of operation beyond 100,000 EOH/3,000 starts without Lifetime Extension

* Example of a typical outage sequence only – actual outage sequences may vary from unit to unit.

Overall potential component risk prior to Lifetime Extension Overall potential component risk with Lifetime Extension Overall potential component risk without Lifetime Extension

Major Inspection*

Minor Inspection

Frame specific Investigation (Siemens)

Component Life Limitations

Lifetime Extension Questionnaire

Component Review

Lifetime Extension Recommendations,

Lifetime Extension Checklist

LLTTEE

Last Minor Inspection before Lifetime

Extension

Lifetime Extension

Discussion of upcoming Lifetime Extension during Major Inspection planning

Unit specific Investigation (Operator / Siemens)

Component Analysis

Continuous Development of State-of-the-art Mods & Ups Packages

Siemens as OEM Growing Fleet Operating Experience

Siemens Modernizations & Upgrades

Component Samples

(if applicable)

MinorInspection

MinorInspection

rMajo Inspection

Customer Order for Lifetime Extension

* As of February 2008