GE Marine has recently delivered one LM2500+G4 aeroderivative marine gas turbine to Avio SpA of Turin, Italy, a GE Marine System Supplier. The gas turbine will power the French Navy's eighth FREMM frigate Lorraine.
Hitachi recently announced the achievement of rated output at the 40MW-class test facility with the new gas turbine, AHAT (Advanced Humid Air Turbine) system, being co-developed with the Central Research Institute of Electric Power Industry (CRIEPI) and Sumitomo Precision Products Co., Ltd. (SPP).
Once considered an occasional “necessary evil,” fuel gas booster (FGB) compressors in turbine power generation facilities have become a common requirement. FGBs are installed because of insufficient gas pressure onsite or from nearby utility gas pipelines.
Historically, pressures up to 300 psig (~20 barA) were adequate for most industrial gas turbines and were often available onsite or at an economical distance. But modern gas turbines tend to run at much higher compression ratios, thus raising the inlet fuel gas pressure requirement.
Parallel shaft gears offer optimum reliability and lower MTTR and are preferred for ease of maintenance and minimum components. Parallel axes are the most common gear arrangement, consisting of a meshing pinion and gear. Parallel arrangements can be simple, or compounded with other parallel gear sets to obtain high gear ratios. The conventional way to describe such a gear is ‘double increaser’ or ‘reduction’ or triple increaser’ or ‘reduction gear’. Parallel axis gears can use spur, helical, double helical or herringbone elements.
The retrofit market for gas turbine (GT) and compressor control systems is poised for a major boom. Systems sold during the GT bubble of the nineties and early 2000s are ready for an upgrade, not to mention even older systems equipped with analog controls or electromechanical governors.
Clark Weaver, Manager of New Product Introduction, Wood Group GTS said, “The average life cycle of many OEM controls are in a 10- to-15-year time frame. Some sites are one failure away from being down indefinitely and are not even aware of it.”
Sensor Coating Systems (SCS) recently announced the launch of a ‘User Club’ for the development of its core sensing technology, a Thermal History Coating (THC). The club launches with five members, including Alstom (Switzerland) Ltd., MAN Diesel & Turbo (Germany), SNECMA (France) and SCS.
GE announced recently the availability of its C90 Automation Control System designed to help industrial customers quickly and intelligently manage power in their plants when facing power outages. By integrating the C90 into their existing power management system, customers can easily identify equipment and processes that are critical to their business to ensure that when the lights go out, power continues to flow to these critical resources.
With the Environmental Protection Agency (EPA) reigning down on aging coal plants, one option for power plant operators is transforming the facility into a combined cycle (CC) plant, harnessing both steam and natural gas. By doing so, they can make use of all the steam turbines as well as a large portion of the remaining plant.
Supercritical CO2 (S-CO2) Brayton Cycle is the most promising of the power conversion cycles currently under development. Similar in configuration to an ideal gas closed-loop Brayton system, it can suit both bulk thermal and the latest generation of nuclear reactors. The simplest recuperated closed system consists of a heat source, heat exchanger, turbine and generator, a recuperating heat exchanger, a waste heat removal heat exchanger and a compressor.
Alstom has recently been awarded an EPC contract by Electricity Generating Authority of Thailand (EGAT) to build the 850 MW North Bangkok combined-cycle power plant’s block 2 and supply its equipment. Alstom’s share in this contract with Sumitomo Corporation of Japan amounts to approximately €225 million.
General Electric recently received the patent for an asymmetrical combined cycle power plant that includes a first engine, a second engine, a first heat recovery steam generator, a second heat recovery steam generator, and a steam turbine. The plant has the productivity characteristics of a large frame machine and efficiency characteristics of an aeroderivative turbine.
The city of San Marcos will participate as a financial partner in the new 540 MW power plant at Horseshoe Bay that the Lower Colorado River Authority is constructing to replace its aging Thomas C. Ferguson electric power generating plant, following the approval of an agreement by the City Council recently. The LCRA Board of Directors approved the agreement on January 16.
MAN and Audi have geared up to create renewable fuel on an industrial scale for the first time. The vehicle manufacturer will produce and feed synthetic methane (Audi e-gas) into the public natural gas network starting summer 2013.
The core component of the plant, which is being built in cooperation with equipment manufacturer SolarFuel GmbH in Werlte (Emsland region), is a MAN Diesel & Turbo methanation reactor.
Japan's Toshiba Corp. recently said it signed a memorandum of understanding (MOU) with U.S. conglomerate General Electric Co. to form a global strategic alliance that the two companies would jointly develop select combined cycle power generation projects globally. The companies will also explore the formation of a strategic joint venture for the development of next-generation combined-cycle power projects having higher levels of thermal efficiency.
GE Oil & Gas recently won a contract worth more than US $500 million to supply turbomachinery equipment and services to Petrobras, a deep-water oil production company. The contract will serve the four new floating production, storage and offloading units (FPSOs P-74, P-75, P-76 and P-77) in the Cessão Onerosa region of the Santos Basin pre-salt fields, in the state of Sao Paulo.
A computer virus attacked a turbine control system at a U.S. power company last fall when a technician unknowingly inserted an infected USB computer drive into the network, keeping a plant off line for three weeks, according to a report posted on a U.S. government website.
The ASME Gas Turbine India show in Mumbai showcased a presentation on Mobil DTE 932 GT by James Hannon, industrial lubricants technical advisor for ExxonMobil, in which the company’s new low-varnish turbine oil solution came to the fore.
(Varnish formation on a spool valve and plunger from a hydraulic directional control valve)
It is an established fact that the contractor will prepare the bid tabulation and present it to the end user for acceptance. However, the contractor bid is usually nothing more than a scope of supply list, and not a true comparison of the offered equipment.
There are four basic function classifications of rotating equipment – driven equipment (compressors, pumps, extruders, mixers and fans), drivers or prime movers that provide power (steam turbines, gas turbines, motors and engines), transmission devices (gears, clutches and couplings) and auxiliary equipment (lube and seal systems, buffer gas systems and cooling systems).
Axial gas turbine technology is the dominant and appropriate configuration for large gas turbines. Major power plants and industrial plants deploy axial gas turbines to provide power and heat for district heating, process, facilities and electricity to the grid. Less discussed, though, are the lower power ranges where both axial and radial gas turbines are available. It is worthwhile to compare axial and radial turbines where the technologies overlap.