Most steam turbine vendors use a vacuum gland condenser system to ensure that air enters the last section of the steam seal, thus preventing steam from entering the bearing bracket and contaminating the oil system.
Siemens F-class turbines begin commercial operation in California
June 26 2013 -
Siemens recently supplied four power 180 MW Siemens simple cycle SGT6-5000F gas turbine units to power American operator NRG Energy's gas-fired Marsh Landing Generating Station (720 MW), located in Antioch, California, 40 miles from San Francisco. The 720 MW gas-fired plant, a Brownfield development, began commercial operation supplying the California grid on May 1.
Italy’s Ansaldo Energia has recently won a contract for a 600MW gas plant in Egypt which the company says it will complete in 14 months. The plant will be built for the Cairo Electricity Production Company near the existing 6th October power station – also built by Ansaldo – in the suburbs of Cairo.
GE’s LM2500+G4 turbines to power new floating production platform offshore Brazil
June 25 2013 -
GE will soon provide four LM2500+G4 aeroderivative gas turbine packages for a new floating production, storage and offloading (FPSO) platform offshore Brazil. The equipment will be supplied to Mitsui Ocean Development & Engineering Co., Ltd. (MODEC), a general contractor specializing in engineering, procurement, construction and installation of floating production systems. The FPSO, owned and operated by MODEC, will be installed in 2,240 meters of water depth in the pre-salt fields offshore Brazil.
Lower stiffness ratio can improve seal life in centrifugal pumps
June 21 2013 -
Conventional centrifugal pumps, those with mechanical seals, need to provide a stable environment for the seal to obtain the maximum life from the seal. Part of this stability comes from keeping the seal faces parallel to each other with minimum vibration. In single stage overhung pumps, the shaft is a cantilevered beam with a circular cross section supported by the bearings with a concentrated load, the impeller, at the end.
APR Energy’s Libyan power contract wins 200MW expansion
June 20 2013 -
APR Energy has recently been awarded the single largest contract by Libyan government in the fast-track power industry following a 200MW expansion of its original 250MW contract. The expansion, which brings the contracted total generation capacity to 450MW, supplements the 250MW of mobile gas turbines originally contracted, said a statement from the Florida-based company.
GE's LM6000 achieves over 26 million operating hours
June 20 2013 -
GE is celebrating "20 years of powering progress around the world" as its LM6000 aeroderivative gas turbine that achieved more than 26 million operating hours. The technology of the LM6000 is based on GE's CF6-80C2 aircraft engine; and GE said it has shipped more than 1,000 LM6000 units to customers globally, gaining "four times more experience than all other competing gas turbines in its class combined".
Siemens completes 430 MW Knapsack II combined cycle plant ahead of schedule
June 17 2013 -
Siemens Energy has completed the Knapsack II combined cycle power plant with a capacity of 430 MW on behalf of Statkraft Markets six weeks ahead of schedule. Siemens built the entire power plant, located in Hürth near Cologne, Germany, as a turnkey project and delivered the main components, including an F-Class gas turbine as well as a steam turbine, generator, and heat recovery steam generator.
Gas turbine operators can learn from wind gearbox problems
June 14 2013 -
The incursion of renewables into the mainstream was the main topic of discussion at the recent Turbo Expo 2013 that took place in San Antonio, Texas. The subject invoked many comments during the conference which was sponsored by ASME's International Gas Turbine Institute (IGTI).
Alstom GT26 gas turbine proves to be effective with shale gas
June 13 2013 -
Alstom’s GT26 gas turbine can already handle shale gas and other variable fuels as internal calculations show that shale gas and LNG will be within the company’s hydrogen gas experience range. In Algeria, Alstom could prove the C2+ variation tolerance of its turbine by running the combustion chambers with 15 percent C2+. At the VGB Congress in Friedrichshafen, Germany held recently, Dr. Klaus Knapp, group head, combustor operations and emissions with Alstom, said a hydrogen content of up to 15 percent volume can be handled by the company’s GT26 turbines.