Steam quality steam must be of the highest quality. Frequent inspections are particularly important during the initial period for operation of a new turbine or new runner, as they will enable cavitation damage to be detected at an early stage and remedial measures to be effected before pitting becomes extensive. Its also designed to cope comfortably with the new generation of jet engines where conditions are hotter and maintenance intervals are longer. Increase the ratio of poweroutput to engine weight by increasing the turbine inlet temperature. S assistant professor department of electronics and instrumentation engineering saveetha engineering college, chennai,tamilnadu,india dennis nathaniel. The fim gives a procedural checklist, which is a tedious. The oil is only renewed by topup, typically accomplished every day to compensate for normal engine oil consumption. Discuss engine lubrication system maintenance procedures. Jet engine oil lifetime and oil change in commercial jet. It can be used in several different modes in critical industries such as power generation, oil and gas, process plants. Turbine lube oil system monitoring and control using pic. Turbine engines, consequences of absence of a prv in the oil filter and non compliance and non adherence of maintenance procedures of lubrication system. Turbine systems are subject to contamination from several sources and deposits will accumulate even though the oil is clean. Maintenance of the compressor, or cold section, is one of concern because damage to blades can cause engine failure.
Chapter 5 jet aircraft engine lubrication systems the increased complexity of aircraft engines has added to the requirements for proper lubrication. Although the manufacturer andor the faa may allow flight up to 10% over the scheduled maintenance timeframe that is, may fly up to 110 hours since the last 100hour inspection, flight may be performed only for the purpose of ferrying the helicopter to the maintenance facility. By far the most significant factors affecting the maintenance interval are the type of operation base load, peak load, trips, starts, the type of fuels used, the method of nox control, and the quality of air entering the turbine. This figure shows the probability density functions pdfs for. It has been specifically developed to provide the optimum balance between low coking and elastomer compatibility. Typically this includes the laboratorys interpretation of the test results and. Engineers are welladvised here to follow the wellknown dictum. The oil cooler used with this aircrafts opposedtype engine is the honeycomb type. Soap is not generally used unless it is part of maintenance schedule. Maintenance of gas turbine lubrication systems consists mainly of adjusting, removing, cleaning, and replacing various components. Common oil analysis parameters for engines and rotating machines such as turbines, and. Maintenance excellence rolly angeles rsa 2003 tables on oil analysistables on oil analysis file no.
The special hydraulic shape of the bsk turbine makes it possible. Aeroshell ascender takes turbine engine oils to a completely new dimension. Oil filter maintenance and oil change intervals for turbine engines vary widely from model to model, depending on the severity of the oil temperature conditions imposed by the specific airframe installation and engine configuration. The atmosphere near the ground is filled with tiny particles of dirt, oil, soot, and other foreign matter. The basic configuration and recommended maintenance of ge heavyduty gas turbines are oriented toward. The advent of synthetic oil for gas turbine engine lubrication. Page 7 maintenance philosophy a fundamental philosophy of the new ge5 gas turbine is simplicity of design, layout and procedures. Turbine engine management, turbine engine overhaul, hot.
Costeffective maintenance of gas turbine aeroengines is achieved by com. Lubricating oil recommendations with antiwear additives for gas turbines. How can you use the aircraft maintenance manual part 1 for new aeronautical engineers if the contents are useful for you, please. Jet engines bearings, seals and oil consumption haw hamburg. The taurus 60 gas turbine is designed for a high degree of compliance with american petroleum institute api requirements. The gearbox drives pumps for the oil, fuel, hydraulic and pneumatic. Repair of an oil tank usually requires that the tank be removed. Turbine engine oils teo our collaboration with turbine engine manufacturers has led to the development of a complete range of turbine engine oils, from mineral oil formulations through to leading edge, fully synthetic hindered esters. Operation and maintenance schedule of a steam turbine plant. The overall target is to maintain high engine performance, and extend the interval between maintenance stops through effective online washing.
With an understanding of the different types of lubricants, their characteristics. Turbine engine oil system maintenance flight mechanic. Condensate entrapment in the steam supply increases turbine steam rates, reduces the steam turbine efficiency, and causes erosion of steam turbine components governor valves, blading, and nozzles. Common oil analysis parameters for engines and rotating machines such as turbines, and gearboxes. Turbine lube oil system monitoring and control using pic controller karthigeyen.
Some oil analysis laboratories have recognized the need for more comprehensive testing to determine lubricant condition for inservice turbine oils and offer specialized test slates and reports for inservice turbine oils. Searching for gas turbine maintenance schedules markus bohlin, kivanc doganay, per kreuger, rebecca steinert, and mathias warja n preventivemaintenance schedules occurring in industry are often suboptimal with regard to maintenance coallocation, lossofproduction costs, and availability. Much of the damage to the blades arises from foreign matter being drawn into the turbine engine air intakes. Maintenance and repair work may only be carried out by trained technical personnel in accordance with all local and national requirements and standards. Jet engines require lubrication to prevent friction from reducing the engines efficiency. Inservice oil analysis for condition based maintenance covers a wide array of topics.
Aeroshell ascender high performance turbine engine oil. Routine sampling of the turbine lube oil for proper viscosity. This handbook is available for download, in pdf format, from. Oil is drawn by a pump from the oil tank, and on completion of desired treatment, oil is returned to the oil tank. A typical maintenance program requires checking engine oil before. Pdf the lubricant systems used in turbine engine applications are. Standard practice for design of gas turbine generator lubricating oil systems1 this standard is issued under the. File type pdf tpe331 maintenance manual tpe331 maintenance manual more tpe331 talk about maintenance costs etc. The gas turbine combines high performance operation with rugged industrial construction. Oil changes and some costs associated with that, size of engine etc.
Avoil characterisation of the toxicity of aviation turbine engine oils. Gas turbine aero engine courtesy of general electric jet engine division. Key technical reference documents to include in maintenance planning gas turbine design maintenance features the ge heavyduty gas turbine is designed to withstand severe duty and to be maintained onsite, with offsite repair required only on certain combustion components, hot gas path parts, and rotor assemblies needing specialized shop service. Introduction to gas turbines for nonengineers published in the global gas turbine news, volume 37. The applicable manufacturers instructions should be followed. Lubricating oil recommendations for gas turbines coast lubricants. Easa module 15 gas turbine engines book, ebook, aircraft. To keep the engine as clean as possible and reduce degradation between maintenance stops, both an effective online water wash system as well as effective air intake filter system, are critical factors. A number in parentheses indicates the year of last reapproval.
Factors influencing maintenance intervals for gas turbines twi. It has been a few years since the publication of the first edition of spectro scientifics inservice oil analysis handbook. Aircraft and engine maintenance, repair and overhaul core. We offer turbine engine video borescope inspections and prepurchase inspections. Our original goal was to compile a comprehensive reference book of common inservice oil analysis techniques to help readers understand and choose the right technique and. This affords the ge5 a position of market leadership in cost and availability through. The engine oil supply is contained in an integral oil tank which forms the rear section of the compressor inlet case. Page 6 ge5 gas turbines package the gas turbine packages were designed with an emphasis on standardization, and optimization of factory and field assembly operations. A steam power plant continuously converts the energy stored in fossil fuels i. Delft university of technology gas path analysis for enhanced aero. Sustainment of commercial aircraft gas turbine engines. Rolly angeles technical training all rights reserve.
Aviation oil outlet offers aviation turbine engine oils from mineral oil formulations through to leading edge, fully synthetic hindered esters. There is no oil change as long as the engine stays on wing. The teardown analysis of the t63a700 engine used in fuel extender research at the federal aviation administration faa technical center was conducted by the tjnited states army aviation systems command avscom depot engineering and reliability centered maintenance support office derso in order to assist the. Bskturbine the surface aerator biogest international. Maintenance and overhaul of steam turbines wgp42 05. Dwg number gek32568 rev h released 6620 page 1 of 26. The result is a standard package capable of satisfying the needs of a typical user for low installation and maintenance costs. Prelube pump inspect engine protective devices check engine valve lash inspect adjust fan drive bearing lubricate fuel control linkage check lubricate fuel injector inspect adjust. Ger3620n heavyduty gas turbine operating and maintenance. This design philosophy allows for high efficiency, low maintenance, and a long service life. Consequently, the oil contained in the tank is a mixture of differentaged oils, some old and some new. Langston, university of connecticut and george opdyke, jr. The following addresses best practices for optimal steam system turbine maintenance and operation.
Best practices for steam turbine maintenance and operation. It may involve the simultaneous change of chemical composition and. Lubrication system maintenance practices flight mechanic. Explain the goals and requirements of the joint oil analysis program joap. Engine mounts check engine oil sample obtain check engine oil level for excessive usage. The lube oil treatment system is used to clean the oil circulating in the gas turbine lubrication and power oil system. Easa part 66 compliant module 15 on gas turbine engine maintenance for part 66 b1. P ug student department of electronics and instrumentation engineering saveetha engineering college, chennai. There have been numerous causes of steam turbine failures worldwide. Additional, longerterm areas for consideration and planning are the lives of the compressor rotor, turbine rotor, casings, and exhaust diffuser. Oil systems for commercial jet engines are rarely drained.
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