Aits experienced inspectors have a variety of remote visual inspection equipment available such as video borescopes, video inspection cameras, video scopes and fiberscopes to inspect industrial gas turbines. Us7458768b2 borescope inspection port device for gas. Gas and steam turbines require particular attention because of safety and maintenance requirements. A video borescope or inspection camera is similar to the flexible borescope but uses a miniature video camera at the end of the flexible tube. Heavyduty gas turbine operating and maintenance considerations maintenance planning advanced planning for maintenance is necessary for utility, industrial, independent power, and cogeneration plant operators in order to maintain reliability and availability. Inspection of turbomachinery components such as rotating gas turbine blades for cracks which may have developed during service operation has. This invention relates generally to gas turbine engines, and more particularly to borescope inspection port devices for gas turbine engines. Gas turbine inspection services are offered for industrial customers throughout north america.
This application claims priority to and is a continuation of u. With the industrial borescope how to track these four factors to check it. The gas turbine borescope inspection is an internal inspection performed by a trained specialist who assesses the condition of the gas turbine from the air inlet through to the exhaust, using an instrument specifically designed to examine the gas path via the access ports positioned along the engine. Engineers to perform borescope inspections on aircraft system components and engines. The gas turbines manufactured by ge energy have features that make them particularly suitable for pipeline compressor applications.
Borescope inspection saves time and money for gas turbine plant. Dozens of thousands of aircraft operations in transportation of the passengers as well as in the field of transportation of goods require one hundred percent availability. The inspection procedures and the knowledge gained from damage evaluation may also be applied to the borescope inspection of the allison 501k17 gte. Borescope inspection saves time and money for gas turbine plant inspecting the internal condition of a turbine generator is an important maintenance activity, but tearing a unit apart is a long. These gas turbines operate at 2,000 degrees fahrenheit against steam turbines at 1,200 degrees fahrenheit. Because gas turbines operate at a much higher temperature than steam turbines, 2,000 degrees fahrenheit versus 1,200 degrees fahrenheit, its essential that a borescope inspection is being done to avoid harm. Borescope inspection training and certification 861706 inspectors need formal training to ensure borescoping is an effective, nondestructive means of visually inspecting internal areas to detect distress in gas turbine engine and aircraft components. A ge gas turbine is a fully integrated design consisting of stationary and rotating mechanical, fluid, thermal, and electrical systems. Engine borescope inspection maintenance scheme management.
Gas turbine systems technician mechanical roadmaps are just what the name implies a roadmap through the enlisted. Schedule inspection of the quaternary fuel annulus during your next planned ci or hot gas path overhaul, or during the annual borescope inspection whichever comes first. Routine borescope inspections will allow you to identify problem areas and to replace or repair parts before they cause major issues and unexpected downtime. Siemens westinghouse has developed a patented high temperature borescope for the inspection of hot. It is essential that inspection procedures take into account. If the annulus is found to have significant corrosion buildup, advanced turbine support suggests cleaning during the following scheduled outage. We use the tube to navigate tight spaces and windows throughout the turbine. For this type of inspection, we use a borescopehence the name. Affordable hd 1080p borescope inspection cameraengines. The third party inspector checks the content in accordance with the approved drawings and specifications and make sure it is stamped in accordance with the code requirements. Maximum periods of operation between inspections and overhauls inplace, onsite inspection and maintenance use of local trade skills to disassemble, inspect, and reassemble gas turbine components in addition to maintenance of the basic gas turbine, other. Borescope inspection in aviation the visual inspection of components, especially of the drives gas turbines with an borescope is a very important part of the function test. Guide to the gas turbine components sgt400 siemens. T the third party inspection for gas turbine article provides a sample procedure for gas turbine inspection and gas turbine testing in the manufacturing shop.
Figure 915 shows typical borescope equipment for gas turbine inspection work. Completed annually or at preoutage intervals to identify problem areas before disassembly. The borescope inspection procedure mainly consists of the following four aspects. Apr 28, 2008 ge energys inspection and life extension services borescope team provides the borescope inspection services for large frame gas turbines. Apu borescope inspection training honeywell youtube. Us9458735b1 system and method for performing a visual. Product rwe power international has experience of all aspects of gt hot gas path inspection activities and can provide capabilities and experience, at a level equal to nationalinternational experts. Heavyduty gas turbine operating and maintenance considerations. The manual interface is a light, onehanded device possessing a minijoystick. Gas turbine components sgt400 siemens free download as powerpoint presentation.
The assessment of the gas turbine condition is accomplished through a borescope inspection procedure. Borescope inspections are carded out into the various portions of the hot gas path which is not directly visible except by this method. To perform a detailed human factors analysis of borescope inspection, particularly as applied to aircraft turbine engines. How to conduct a borescope on a pt6a5a engine youtube.
Nov 22, 2016 borescoping allows you to visually inspect the inside of a gas turbine engine without the need to dismantle it. A borescope is a specialty instrument with a flexible tube, which contains a camera at the end. Borescope inspection saves time and money for gas turbine. Five steps towards a successful wind turbine gearbox inspection. Cfm567b engine has had several ruptures of hpt blades since its service, resulting engine failure during the flight. Benefits of borescope services by hpi hpi has experienced turbine specialists who not only provide nondestructive services, but also inspect, overhaul, and install turbomachinery systems. Third party inspection for steam turbine name plate controlling. Damages to turbine engine components scientific journal of. Experienced turbine technicians, with worldwide backup and resources to call upon, can perform assignments in the field that include removal, installation and commissioning of gas turbines, troubleshooting or borescope inspections.
Borescope inspection procedure pdf 61 daubagendser. Borescope training gas path inspection gas turbine steam turbine siemens sgt ft4 ft4000 ft8 avon rb211 trent centaur mars mercury saturn taurus titan. This document also provides background information that will aid the inspector in understanding stationary gas turbines. These procedures include gas path borescope inspection bi, radial clearance measurements, and turbine nozzle axial clearance measurements. Inspectors guidance manual stationary gas turbines. Dec 21, 2017 gas turbine inspections are much more difficult than other industrial and manufacturing procedures. Gas turbine components sgt400 siemens turbomachinery. The visual inspection of components, especially of the drives gas turbines with an borescope is a very important part of the function test. Ger3620n heavyduty gas turbine operating and maintenance. Scribd is the worlds largest social reading and publishing site. Geometric orientation of the lm2500 gte the following section discusses the borescope procedures used to inspect the lm2500 gte. Our gearbox inspection services help you detect failures as early as possible and ensure the efficiency of your wind turbines.
Chapter 2 gas turbine maintenance this chapter will cover object damage, borescope inspection, troubleshooting, and maintenance of the lm2500 and the allison 501k series of gtes. U07a marine gas turbine inspector performs periodic borescope inspections, mechanical grooms, and gas turbine bulletin inspections. Ge energys pipeline centrifugal compressor line complements its gas turbine line to optimize matching with the gas turbine driver resulting in perfectly integrated gas turbine compressor units. Our borescope inspection services can reveal potential problems that may result in collateral damage. Gas turbine systems supervisor supervisor manual for gas turbine engines. Pdf borescope inspection for hpt blade of cfm567b engine. Through borescope inspection for hpt blade can detect the damage of blade on. Borescope inspection results are recorded and processed. Applications include piston engines and gas turbine engines either installed in aircraft or in workshops. To use the analysis to provide human factors guidance best practices to improve the overall reliability of borescope inspection.
Mea366a perform borescope inspections date this document was generated. Hp turbine nozzle hp turbine nozzles no defect found hp turbine nozzles no defect found e. Hpi has a deep knowledge of how engines operate and the realworld implications of component degradation and system maintenance. Typically the inspection is an inlet to exhaust assessment of your gas turbine to inspect for any issues that could affect further performance. Spi borescopes is proud to introduce the recon series of articulating video borescopes.
These can be used in improved training schemes, procedures, design of. Borescope inspection services nde borescope services. Pdf gas turbines gas turbine maintenance philosophy and. Us49822a eddy current probe for inspecting interiors of. Causes of vibration of gas turbines include the path of flow media, the unbalance of rotor, and miscellaneous effects of other components and the vibration may lead the vane components to fatigue. Increased demand following each borescope inspection, ge energy inspectors spent hours manually consolidating images and handwritten notes into a comprehensive report.
Five steps towards a successful wind turbine gearbox inspection introduction a wind turbine gearbox inspection usually comprises at its core an indepth visual endoscope inspection with the option of an additional oil sample taken from the existing oil, which is sent away to a dedicated oil laboratory for spectrophotometric and particle analysis. Third party inspection for steam turbine procedure. They are also used in manufacturing of machined or cast parts to inspect critical interior surfaces for burrs. Borescope inspection results are recorded and processed in accordance with standard enterprise procedures for the applicable borescope equipment.
Third party inspection for steam turbine painting and coating. Delays to stop, cool down the gas turbine, secure the rotating parts and the borescope operator path to the borescope holes take one full day, which means that a borescope inspection demand a prolonged weekend stop with an unavailability penalty. Demonstration of the borescope procedure for the boeing 777 apu 331500. Gas turbine lm6000 borescope inspection ge power services. The end of the insertion tube includes a light which makes it possible to capture video or still images deep within equipment, engines and other dark spaces. Apu borescope inspection training honeywell honeywell. Hot gas path inspection 1 free download as powerpoint presentation. Gas turbines are increasingly being used in power plants both in the utility and power sectors for their. There have been numerous causes of steam turbine failures worldwide. Borescope reduces time for gas turbine inspections. Pdf borescope inspection management for engine researchgate. Nov 20, 20 demonstration of the borescope procedure for the boeing 777 apu 331500. Inspect, test and troubleshoot gas turbine engine systems and components. Carl davis from davis aviation demonstrates how to conduct a borescope on a pt6a5a engine.
Borescope inspection of engines can be used to prevent unnecessary maintenance, which can become extremely costly for large turbines. This page provides a sample inspection and test plan for gas turbine which is used in the gas turbine shop inspection. The correct implementation of planned maintenance and inspection. Inspection procedure an overview sciencedirect topics.
Human factors good practices in borescope inspection colin g. Aircraft turbine engine borescope inspection youtube. A haptic virtual borescope for visual engine inspection training. Identify the types of troubleshooting drawings and diagrams 6. Borescope techniques applied to maintenance practices on marine heavyduty gas turbines by samoil moise manager, marine maintenance service gas turbine products division electric company schenectady, new york.
Borescope reduces time for gas turbine inspections power. Discuss the purpose and types of borescopes used today. Maintenance and overhaul of steam turbines wgp42 05. Ge heavyduty gas turbine designs incorporate provisions in both compressor and turbine casings for borescope inspection of intermediate compressor rotor stages, first, second and thirdstage turbine buckets, and turbine nozzle partitions. Gas turbine inspection is more complex than other manufacturing or industrial procedures. The manual interface is a light, onehanded device possessing a minijoystick that gas turbine major inspection procedure pdf download borescope inspection procedures and maintenance steam turbines. This guidance document presents procedures for inspection of stationary gas turbines in order to determine permit compliance and compliance with this new source performance standard nsps. Bsi borescope inspection gas turbine acronymfinder. The borescope inspection procedure is an example of a visual search and. Causes of vibration of gas turbines include the path of flow media, the unbalance of rotor, and miscellaneous effects of other components and the vibration may lead the. The gas turbine maintenance criteria and the asso ciated costs are directly affected by the accessibility and inspection of complex, coated components manufactured from advanced high temperature materials. The aircraft derivative gas turbine in figure 916 has 22 borescope ports allowing access to critical components of the core engine. This affords the ge5 a position of market leadership in. This course will familiarize the student with the procedures required to assess the operational condition of internal gas turbine components using borescope equipment.
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