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PP53 Rev A Page 1 of 3 COPYRIGHT, 2009, GE PACKAGED POWER, L.P.,ALL RIGHTS RESERVED. THIS DRAWING IS THE PROPRIETARY AND/OR CONFIDENTIAL PROPERTY OF GE PACKAGED POWER, L.P., AND IS LOANED IN STRICT CONFIDENCE WITH THE UNDERSTANDING THAT IT WILL NOT BE REPRODUCED NOR USED FOR ANY PURPOSE EXCEPT THAT FOR WHICH IT IS LOANED. IT SHALL BE IMMEDIATELY RETURNED ON DEMAND, AND IS SUBJECT TO ALL OTHER TERMS AND CONDITIONS OF ANY WRITTEN AGREEMENT OR PURCHASE ORDER WHICH INCORPORATES OR RELATES TO THIS DRAWING. . Gas Turbine Fire and Gas Protection System Updates Introduction When package updates and modifications are incorporated to LM Aero units, the gas turbine package fire and gas system should be evaluated for compliance with latest edition of NFPA and other industry standards. Description Gas turbine engines and control systems are updated periodically over the life span of the LM package. When these updates are deployed, the fire and gas protection system should be evaluated to ensure compliance with newest edition of industry standards. Since original installation of the gas turbine package updates to codes could have occurred, but the package may not have been kept current. GE maintains new production LM gas turbine fire and gas system designs to current NFPA standards. Since inception of LM packages some updates would be appropriate to packages in the field and if there were a significant modification or upgrade planned, it would be opportune time to deploy latest fire system updates. These updates would ensure product reliability. For up to date fire and gas system design the following enhancements should be recognized and planned for deployment. Reference Figure 1, Typical LM6000 Fire and Gas System F&ID. - Catalytic bead gas LEL sensors. Sensors heads are high temperature rated for 305 ° F, incorporated inside the turbine module with remote external mounted amplifiers for calibration. These catalytic bead gas sensors are strategically fitted at locations so as to detect methane gas migration in the gas turbine and generator module when ventilation fans are not operating. Typical settings for these LEL sensors are 15% LEL alarm and 25% LEL shutdown. Calibration range of sensitivity for these type LEL sensors is +/- 5%. - IR (Infrared) gas LEL sensors. Sensors are fitted in the gas turbine ventilation system extract duct and are designed to detect methane gas exiting the gas turbine module when the ventilation fans are operating. At least 2 each IR gas detectors should be incorporated to enhance reliability. Typical settings for these type LEL sensors are 5% alarm and 10% shutdown. Normal calibration range of sensitivity for these type LEL sensors is +/- 1%. GE Energy Aero Energy Division Position Paper #53 Rev A Date: February 9, 2009 16415 Jacintoport Blvd Houston, TX 77015 USA T 001-281-864-2803 F 001-281-864-2459
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PP53 Rev A
Page 1 of 3 COPYRIGHT, 2009, GE PACKAGED POWER, L.P.,ALL RIGHTS RESERVED. THIS DRAWING IS THE PROPRIETARY AND/OR CONFIDENTIAL PROPERTY OF GE
PACKAGED POWER, L.P., AND IS LOANED IN STRICT CONFIDENCE WITH THE UNDERSTANDING THAT IT WILL NOT BE REPRODUCED NOR USED FOR ANY PURPOSE
EXCEPT THAT FOR WHICH IT IS LOANED. IT SHALL BE IMMEDIATELY RETURNED ON DEMAND, AND IS SUBJECT TO ALL OTHER TERMS AND CONDITIONS OF ANY
WRITTEN AGREEMENT OR PURCHASE ORDER WHICH INCORPORATES OR RELATES TO THIS DRAWING.
.
Gas Turbine Fire and Gas Protection System Updates
Introduction
When package updates and modifications are incorporated to LM Aero units, the gas turbine package fire and gas system should be evaluated for compliance with latest edition of NFPA and other industry standards.
Description
Gas turbine engines and control systems are updated periodically over the life span of the LM package. When these updates are deployed, the fire and gas protection system should be evaluated to ensure compliance with newest edition of industry standards. Since original installation of the gas turbine package updates to codes could have occurred, but the package may not have been kept current.
GE maintains new production LM gas turbine fire and gas system designs to current NFPA standards. Since inception of LM packages some updates would be appropriate to packages in the field and if there were a significant modification or upgrade planned, it would be opportune time to deploy latest fire system updates. These updates would ensure product reliability. For up to date fire and gas system design the following enhancements should be recognized and planned for deployment. Reference Figure 1, Typical LM6000 Fire and Gas System F&ID.
- Catalytic bead gas LEL sensors. Sensors heads are high temperature rated for 305 F, incorporated inside the turbine module with remote external mounted amplifiers for calibration. These catalytic bead gas sensors are strategically fitted at locations so as to detect methane gas migration in the gas turbine and generator module when ventilation fans are not operating. Typical settings for these LEL sensors are 15% LEL alarm and 25% LEL shutdown. Calibration range of sensitivity for these type LEL sensors is +/- 5%.
- IR (Infrared) gas LEL sensors. Sensors are fitted in the gas turbine ventilation
system extract duct and are designed to detect methane gas exiting the gas turbine module when the ventilation fans are operating. At least 2 each IR gas detectors should be incorporated to enhance reliability. Typical settings for these type LEL sensors are 5% alarm and 10% shutdown. Normal calibration range of sensitivity for these type LEL sensors is +/- 1%.
GE Energy Aero Energy Division
Position Paper #53
Rev A
Date: February 9, 2009
16415 Jacintoport Blvd
Houston, TX 77015
USA T 001-281-864-2803
F 001-281-864-2459
-
PP53 Rev A
Page 2 of 3 COPYRIGHT, 2009, GE PACKAGED POWER, L.P.,ALL RIGHTS RESERVED. THIS DRAWING IS THE PROPRIETARY AND/OR CONFIDENTIAL PROPERTY OF GE
PACKAGED POWER, L.P., AND IS LOANED IN STRICT CONFIDENCE WITH THE UNDERSTANDING THAT IT WILL NOT BE REPRODUCED NOR USED FOR ANY PURPOSE
EXCEPT THAT FOR WHICH IT IS LOANED. IT SHALL BE IMMEDIATELY RETURNED ON DEMAND, AND IS SUBJECT TO ALL OTHER TERMS AND CONDITIONS OF ANY
WRITTEN AGREEMENT OR PURCHASE ORDER WHICH INCORPORATES OR RELATES TO THIS DRAWING.
Conclusion
Its essential that gas turbine package protection fire systems be evaluated to ensure its design is current in accordance to latest codes and standards. GE can assist customer with this evaluation review and provide recommendations
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PP53 Rev A
Page 3 of 3 COPYRIGHT, 2009, GE PACKAGED POWER, L.P.,ALL RIGHTS RESERVED. THIS DRAWING IS THE PROPRIETARY AND/OR CONFIDENTIAL PROPERTY OF GE PACKAGED POWER, L.P., AND IS LOANED IN STRICT CONFIDENCE WITH THE
UNDERSTANDING THAT IT WILL NOT BE REPRODUCED NOR USED FOR ANY PURPOSE EXCEPT THAT FOR WHICH IT IS LOANED. IT SHALL BE IMMEDIATELY RETURNED ON DEMAND, AND IS SUBJECT TO ALL OTHER TERMS AND CONDITIONS OF
ANY WRITTEN AGREEMENT OR PURCHASE ORDER WHICH INCORPORATES OR RELATES TO THIS DRAWING.
Figure 1 Typical LM6000 Gas Turbine Fire and Gas System F&ID
IR Gas LEL
Sensors
Catalytic
Bead Gas
LEL Sensors
Catalytic
Bead Gas
LEL Sensors
HomeGE Power.comMain Table Of ContentsTab LM SeriesPPIndexPP01PP02PP03PP04PP10PP16PP17PP20PP21PP26PP31PP32PP33PP34PP35PP37PP38PP39PP42PP45PP46PP47PP48PP49PP50PP51PP53PP54PP56PP59PP60PP61PP64
Tab LM 6000PP05PP06PP07PP08PP09PP11PP14PP23PP25PP28PP43PP55PP57PP58PP62
Tab IEC NEC TCP 50/60 HzPP12PP13PP15
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