Browsing by Title
Now showing items 25839-25858 of 121630
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(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station; Texas A & M University. Libraries, [2019])The customer experienced short seal life on a set of multi-stage, double ended pumps that were commissioned in 2009. A single seal design with piping plan 23 system was used with pump cooling jackets. The average seal life ...
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(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station; Texas A & M University. Libraries, [2019])During the testing of a 1 MWe power loop with super critical co2, it was discovered that dry ice formation across dry gas seals would be an issue. This case study looks at the negative effects of dry ice formation and how ...
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(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station; Texas A & M University. Libraries, [2019])TBD
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(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station; Texas A & M University. Libraries, [2019])TBD
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(Turbomachinery Laboratory; Texas A&M Engineering Experiment Station; Texas A & M University. Libraries, [2019])During a normal run cycle the compressor performance started to decline (again) due to chloride contamination, a known issue. The usual approach was to shut the process unit down and turn the compressor off, then removing ...
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(Turbomachinery Laboratory; Texas A&M Engineering Experiment Station; Texas A & M University. Libraries, [2019])An unexpected vibration issue was seen at two of Tallgrass Energys recently installed compressor stations (Chandlersville and St. Paul) and was associated with certain operating conditions when specific combinations of the ...
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(Turbomachinery Laboratory; Texas A&M Engineering Experiment Station; Texas A & M University. Libraries, [2019])Reliability and performance related issues of pistons and cylinder rings can be avoided in the vast majority of cases and the piston should never be the MTBF (Mean Time Before Failure) bottle neck. Even for non-lube machines ...
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(Turbomachinery Laboratory; Texas A&M Engineering Experiment Station; Texas A & M University. Libraries, [2019])Reliability and performance related issues of pistons and cylinder rings can be avoided in the vast majority of cases and the piston should never be the MTBF (Mean Time Before Failure) bottle neck. Even for non-lube machines ...
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(Turbomachinery Laboratory; Texas A&M Engineering Experiment Station; Texas A & M University. Libraries, [2019])This case study presents a presence of radial subsynchronous vibration during mechanical running tests of High Pressure Compressor following API 617 requirement. During the tests it was investigated how the lateral vibration ...
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(Turbomachinery Laboratory; Texas A&M Engineering Experiment Station; Texas A & M University. Libraries, [2019])This case occurred during startup after outage on a steam turbine generator. Vibration reached over full scale of 20 mil pp at generator drive end bearing and therefore tripped the unit. The major vibration component that ...
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(Turbomachinery Laboratory; Texas A&M Engineering Experiment Station; Texas A & M University. Libraries, [2019])A geothermal power producer located in New Mexico, USA operates four screw expanders, each rated nominally at 1,000 kW. Chronic, extremely short expander life manifested through catastrophic bearing failure has significantly ...
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(Turbomachinery Laboratory; Texas A&M Engineering Experiment Station; Texas A & M University. Libraries, [2019])Blade failure was caused by a huge alkaline element of Na flowing into the steam turbine from upstream due to improper water treatment. In this presentation, we will inform the reason why Na precipitated in dry steam ...
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(Turbomachinery Laboratory; Texas A&M Engineering Experiment Station; Texas A & M University. Libraries, [2019])Precise and stable steam flow control to the Turbine directly relates to improved steam turbine speed and load control and reduced system mechanical wear. This paper presents a complete failure of a Governing valve seat ...
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(Turbomachinery Laboratory; Texas A&M Engineering Experiment Station; Texas A & M University. Libraries, [2019])In case of copressors operated in evironment of wet hydrogen sulide, Sulfide Stress Craking could act critical mechanism of impeller failure. This case study deal with what make sulfide stress cracking and how to take a ...
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(Turbomachinery Laboratory; Texas A&M Engineering Experiment Station; Texas A & M University. Libraries, [2019])The machine train consists of a HP/LP Steam turbine driving a Generator of 118 MW. The vibration was high on both the bearings of the Generator. The issue persisted for almost two years without the root cause being resolved. ...
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(Turbomachinery Laboratory; Texas A&M Engineering Experiment Station; Texas A & M University. Libraries, [2019])In this paper, the catastrophic failure of a 2-pole 360MW unit will be presented. This failure lead a root cause analysis and a series of investigations that was taken place in a similar design unit deployed at a different ...
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(Turbomachinery Laboratory; Texas A&M Engineering Experiment Station; Texas A & M University. Libraries, [2019])During the comissioning and filed-tests of the turbogeneration system of an oil platform, low speed high vibration levels were observed on the generator shaft and other neighbouring vibration sensors. The vibration was ...
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(Turbomachinery Laboratory; Texas A&M Engineering Experiment Station; Texas A & M University. Libraries, [2019])Three case studies showing 3 different manifestations of thermally induced bow/ imbalance in integrally geared machine are presented
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(Turbomachinery Laboratory; Texas A&M Engineering Experiment Station; Texas A & M University. Libraries, [2019])Rotordynamic stability of gas compressors at high speeds and operating pressures is a significant technical challenge. Dynamic instability must be avoided for the sake of safe, reliable and continuous operation of ...
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(Turbomachinery Laboratory; Texas A&M Engineering Experiment Station; Texas A & M University. Libraries, [2019])This Morton effect case is unique since the mitigation method during the high speed balance (increasing the bearing clearance) is opposite to the mechanical test method (decreasing the bearing clearance). The investigation ...