Steam turbine rotors bend during operation, but the bearing and supports are designed to keep the static and dynamic forces under control. Make certain tubing faces are free of nicks, dents or burrs. The following addresses best practices for optimal steam system turbine maintenance and operation. Steam turbines can usually operate across a broad speed range and do not fail when overloaded. Maintenance and overhaul of steam turbines wgp42 05. Many of the tils contain advisory technical recommendations to help resolve issues and improve the operation, maintenance, safety, reliability, or availability of the turbine. Steam turbine maintenance, failure mode and effects analysis fmea utdrattur gufa ur borholum er almennt notu. The steam turbine operates under high steam pressures, and has a number of moving parts that move at extremely high velocities. A comprehensive course on operation and maintenance of turbines and engines of various designs and applications. Ge currently conducts over 400 thermal performance tests each year, on gas turbine, steam turbine, and combined cycle power plants from all manufacturers.
Open library is an initiative of the internet archive, a 501c3 nonprofit, building a digital library of internet sites and other cultural artifacts in digital form. The best way to ensure the longterm performance of your elliott stg is through a collaborative maintenance agreement with elliott field service. In an extracting type turbine, steam is released from variousin an extracting type turbine, steam is released from various stages of the turbine, and used for industrial process needs or sentstages of the turbine, and used for industrial process needs or sent to boiler feed water heater to. We have had the opportunity to work on a variety of. Condition monitoring of steam turbines by performance analysis. In 1924 krupp built the steam turbine locomotive t18 001, operational in. A steam turbine locomotive engine is a steam locomotive driven by a steam turbine. The reader will find here enough material concerning the basic concepts of gas dynamics as applied to steam turbines as well as design and construct ion of steam turbines and their details with regard to mechanical strength. The steam turbine drive is capable of serving the same function as a variable speed drive electric motor driver. Operations and maintenance cost assessment confidential page 1 operations and maintenance operating cost assessment report taylorville energy center. The book covers the entire crossfunctional aspects of a thermal power plant.
Steam turbine services can help execute your outage, forced or planned, from full load to full load. A major steam turbine repair can cost ten or more times that of a garden variety centrifugal pump repair. Typically, routine inspections are required every 4,000 hours to ensure that the turbine is free of excessive vibration due. Three basic phases can be distinguished in the process of steam turbine unit start. Operational practices turbines and engines november 22 24, 2017 3 day technical program fauji fertilizer company ltd. Operations and maintenance operating cost assessment report taylorville energy center. Chaplin encyclopedia of life support systems eolss there is a loss in stage efficiency at the rate of about 1% for each 1% moisture content. Gas turbine operating and maintenance considerations chapter 20. Water chemistry which is very important for a boiler is discussed in chapter 5.
Operators guide to general purpose steam turbines wiley. Installation and maintenance costs are minimized through. Ge energy offers training for the operation and maintenance of our complete line. Variable load operation of these turbines has also been considered. Noncondensing turbine operation of a multistage condensing turbine typical starting sequence for a steam turbine generator set maintenance introduction internal water washing steam purity inquiry guide page 51 51 51 51 51 52 52 52 55 55 55 55 57 57 57 57 57 57 57 61 61 61 61 65 65 65 71 74 79. In this steam turbines books section you will find handbooks training material and slides related to steam turbine auxiliaries, design and operation and maintenance. Course overview hewlettpackard turbines and engines. Unesco eolss sample chapters thermal power plants vol. However, bending can cause impact between stationary and. Otsstt001 day 4 steam turbine maintenance system maintenance repair procedures visit to oel workshop to witness bearing repair steam turbine alignment causes of misalignment types of misalignment pre alignment checks reverse alignment day 5 steam turbine alignment laser alignment hot alignment. Steam turbine drives are equipped with throttling valves or nozzle governors to modulate steam flow and achieve variable speed operation.
Best practices for steam turbine maintenance and operation. A look into our broad portfolio of steam capabilities. Routine maintenance practices include online running maintenance, predictive maintenance, plotting trends, performance testing, vibration analysis, and preventive maintenance procedures. There have been numerous causes of steam turbine failures worldwide. Gas turbine maintenance electric power system gas turbine. Practical boiler operation engineering power plants by amiya ranjan mallick. A steam turbine with multiple sets of rotating blades. Steam turbine journal bearing and its function steam turbines have journal bearings and thrust bearings. Top 50 boiler information booster question answers today we are discussed about the top 50 boiler information booster question answers these question is very helpful for those who worked in power plant as a boiler first class, boiler operator, boiler fireman, boiler operation engineering, energy. The principles of correct conducting startups have been developed over the longterm operation of steam turbines and contain experience of turbine designers, constructors and operators. Tgm was founded in 1986 as a steam turbine generator maintenance company. One thrust bearing typically is provided for the entire steam turbine to. A properly maintained elliott steam turbine generator stg can operate reliably and efficiently for decades. The high cost of an extensive overhaul due to an undetected component failure.
When ge conducts your performance tests, you gain the high level engineering expertise of a trusted name in the power generation industry. Our innovative and meticulous approach will minimize lost production time and provide unparalleled customer satisfaction. Questions and answers national engineer allen, zenas on. Combined heat and power technology fact sheets series. Practical boiler operation engineering power plants. Operation of the combustion gas turbine, as any rotating power equipment, must include a planned program of periodic inspection. Design and operation vol 2 pennwell isbn 0 87814 716 0 mccloskey, t h. Training operation and mechanical maintenance due diligence inspections. Downtime can be expensive and unplanned downtime can be extremely disruptive. Operation and maintenance schedule of a steam turbine.
Journal bearings are at each end of each rotor to support the weight of the rotor. Steam turbine maintenance is of high importance to keep the steam turbines efficiency high and to conform to safety standards to avoid any unforeseen dangers. Ethosenergy provides both field and shop services focused on reliability and efficiency. Rail king 686 bantam turbine steam operation manual 27 pages. Operations and maintenance cost assessment confidential page 2. Steam turbines are one of the most versatile and oldest prime mover technologies still in general production used to drive a generator or mechanical machinery.
The first steam turbine rail locomotive was built in 1908 for the officine meccaniche miani silvestri grodona comi, milan, italy. This is water free of excessive minerals and gases with a nominal ph of 7. Steam quality steam must be of the highest quality. An overspeed failure on a big steam or gas turbine is one of the most frightening of industrial accidents. A ph level only a single digit away from these recommendations can make a dramatic difference. Solar turbine saturn 10 operation turbine saturn 10. Some basic concepts of engineering related to power plants are discussed in chapters 1, 2, 3 and 4.
Centrifugal compressors and steam turbines are critical machinery in any plant their selection using design standards, operation at best efficiency points and maintenance at required interval and with the appropriate spare parts at optimum clearances delivers the organization target for maximum production at minimum opex and capex. Familiarize with architecture and construction of major components e. Top 50 boiler information booster question answers. 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.
791 1272 1459 62 789 248 911 538 383 1539 960 734 1191 848 1398 1375 99 565 1207 291 1482 640 942 390 593 1483 123 882 132 230 306 596