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Showing posts from September, 2008

THE AXIAL COMPRESSOR

The axial compressor is mounted on turbine shaft and consists of many stages as per it's capacity. It supplies all the air needed for combustion, cooling the turbine, blades, atomizing fuel oil and pneumatic instruments. The air advances stage by stage later normally. Some air is passed to an air to air radiator, gets cooled and in turn is used for cooling the turbine rotor and stator blades. Outlets are provided to supply atomizing air and instruments air from compressor outlet chamber. The instrument air tubing is given a long loop travel to allow it to cool through fins on the instrument air tubing is giving a long loop travel to allow it to cool through fins on the tube before reaching any valve. Outlet is provided for a pressure switch for processing of various operations in combination with electronic governor. Science air pressure is dependent on axial compressor rotary speed (turbine shaft), the pressure reflects the speed relatively. Thus many calculations and opera...

PLAN OF 234 MW CCPP GE 6FA GAS TURBINES

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SHAFT ALIGNMENT

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POWER BUT CLEAN ENVIRONMENT.............

Clean Power Today! Today world is foucsing on power but also foucsing onprojects in the field of environmental protection. Power utilities are faced with new pressures in the current business environment from deregulating markets, to compliance with increasingly stringent environmental regulations being developed at the national regional and international levels, to an ever increasing number of air pollutants being controlled. Compliance with new emission regulations typically requires new air pollution control equipment and additional capital investment and the operation of this equipment is often unfamiliar to plant personnel. The sale of wholesale electricity in an increasingly competitive marketplace places ever increasing pressure on the optimization of key generation assets to increase returns on invested capital; this includes the assets that control emissions of air pollutants. Because the operation of the power plant is focused on power generation, air pollution control equipm...

COMPRESSOR CLEANING WATER PURITY

Compressor Cleaning Water Purity Specification for GE Aircraft Derivative Gas Turbines in Industrial Applications 1.1 Scope: This specification established the requirements for purified water for use in cleaning the compressor of gas turbine engines where the intent is to restore performance by removing the build up of deposits on compressor components. The water quality defined in this specification applies to water used in both on–line compressor cleaning and crank–soak compressor cleaning. 1.2 Definitions : For the purpose of this specification, the following definitions shall apply: On–line Compressor Cleaning:- A method of removing the build up of deposits on compressor components while the engine is operating. On-line cleaning as accomplished by spraying cleaning solution into the inlet of the engine while the engine is operating. Crank–Soak Compressor Cleaning:- A method of removing the buildup of deposits on compressor components while the engine is motored by the ...

Water Wash Code Uniform National Discharge Standards

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This document is part of Appendix A, and includes Gas Turbine Water Wash: Nature of Discharge for the “Phase I Final Rule and Technical Development Document of Uniform National Discharge Standards (UNDS), ” published in April 1999. The reference number is EPA -842-R-99-001. Phase I Final Rule and Technical Development Document of Uniform National Discharge Standards (UNDS) Gas Turbine Water Wash: Nature of Discharge NATURE OF DISCHARGE REPORT GAS TURBINE WATER WASH 1.0 INTRODUCTION The National Defense Authorization Act of 1996 amended Section 312 of the Federal Water Pollution Control Act (also known as the Clean Water Act (CWA)) to require that the Secretary of Defense and the Administrator of the Environmental Protection Agency (EPA) develop uniform national discharge standards (UNDS) for vessels of the Armed Forces for “. . .discharges, other than sewage, incidental to normal operation of a vessel of the Armed Forces, ...” [Section 31 2(n)(1...