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LNG - Oman LNG L.L.C. Co.
This two-train LNG plant in Oman has been equipped with starter/helper drives
for the gas turbines, achieving a 12.5% increase in production.
Siemens scope of supply:
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engineering, manufacturing and supply of four VSDS systems as a gas
turbine starter/helper VSDS; |
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converter transformers; |
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containerized LCI frequency converters; |
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synchronous motors and auxiliaries; |
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tandem-casing BOG compressor type STC-SH (12-6-A) + STC-SV (10-7-A),
the world’s largest BOG single shaft compressor at time of order. |
All components were designed in accordance with Shell DEP specifications. |
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LNG - Shell, Brunei
In 2006, after 34 years of continuous operation in start/stop mode, two Siemens boil-off gas compressors at Shell’s Brunei LNG loading terminal were inspected for the first time. Bearings showed negligible wear, but were replaced as part of a preventive maintenance scheme. Delivered in 1972, these were the world’s very first BOG compressors with adjustable inlet guide vanes — a technology that has become standard for BOG compression applications. |
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LNG - Statoil, Hammerfest
Melkøya Island, off Hammerfest, Norway. The world’s first all-electric LNG
plant. Designed for flawless operation at arctic temperatures and rapidly
changing operating conditions.
Siemens scope of supply:
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The world's largest variable speed drive systems (VSDS) rated 65 MW at
3600 rpm for the pre-cooling and sub-cooling compressors; |
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vsds-driven compressor string for the methane mix train; |
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32-MW VSDS for the liquefication compressor; |
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CO2 re-injection compressor; |
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harmonic study; |
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load commutated inverter (LCI) frequency converter units, drive
control and fault diagnosis systems; |
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transformers; |
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containerized harmonic filters; |
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converter cooling systems and auxiliary equipment. |
Photo courtesy of Statoil. |
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LNG - GASCO, Abu Dhabi
Abu Dhabi Gas Liquefaction Company Ltd. (ADGAS) contracted Siemens for the modernization and expansion of the power supply and distribution system of the gas liquefaction plant on “Das Island”. The system is designed to improve security of supply and increase available power reserves. As part of the project the plant will have a new medium-voltage switching substation, a new power distribution system and an additional gas turbine with an output of 30 MW.
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LNG - BP, Indonesia
In 2005 Pertamina/BP ordered two tandem casing trains for an LNG plant in
Indonesia.
Siemens scope of supply:
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two trains with tandem-casing BOG compressors type STC-SH (10-6-A) +
STC-SH (10-6-A); |
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IGV control; |
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dry gas seals encapsulated in heated seal carrier. |
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LNG - Nigeria LNG, Nigeria
Relying on Siemens’ experience in LNG applications, Nigeria LNG ordered
rotating equipment for propane compression for their Bonny Island LNG project.
Siemens scope of supply:
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three compressor trains, each comprising one horizontally split
single-shaft compressor STC-SH (10-6-A) and electric motor; |
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delivered in 2000. |
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LNG - RasGas LNG, Qatar
Ras Laffan, Qatar, RasGas LNG plant.
Siemens scope of supply:
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project management; |
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power distribution system consisting of: 33 kV GIS and 6.6 kV AIS; |
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annunciation system and medium voltage bus ducts; |
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electrical Integrated Control System ELICS; |
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telecommunication system (FOTS via Open Transport Network (OTN)); |
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supervision and commissioning services. |
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LNG - Nigeria LNG, Nigeria
The world’s largest end flash gas (EFG) single-shaft compressor was
manufactured for Nigeria LNG, NNPC.
Siemens scope of supply:
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five trains with tandem-casing EFG compressors type STC-SH (14-6-A) +
STC-SV (14-8-B), 900 mm impeller diameter, IGV control and dry gas seals
encapsulated in heated seal carrier. |
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