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425 MW Steam Turbine Commissioning -
MSI was called on behalf of an engineering construction firm building a new power plant in the Southern Hemisphere.
The plant was only weeks away from the commissioning deadline, after which hundreds of thousands of US$ per day liquidated damages would be due...
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CS05-0124Rt |
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A Cure for the Common Cold – in Turbines -
...In a new power plant overseas, two newly installed aeroderivative gas turbine/ generator
sets were experiencing sudden and dramatic increases in vibration level over certain operating torque ranges...
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CS00-0141Rt |
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Aeroderivative Gas Turbine and Gearbox / Genset -
MSI was called on behalf of a customer who had seen a large increase in the vibration levels of
a particular LM500 Gas Turbine Generator Set being used to supply power to a large pharmaceutical facility ...
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CS01-0115Rt |
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Boiler Feed Pump Reliability Problem -
A Northeastern power plant had experienced chronic boiler feed pump failures for eight
years, since the unit involved had been switched from base load to modulated load...
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CS98-0101Rp |
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Cardiovascular Stent Stress Analysis -
A manufacturer of cardiovascular stents developed a new design that required FDA approval before it could be sold in the United States.
In order to obtain this approval it had to be shown that the stent could withstand the balloon expansion process without developing any cracks...
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CS03-0114M |
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Cavitation Assessment on Large Double-Suction Pumps -
Mechanical Solutions, Inc. has developed a high frequency accelerometer technique for
quantifying the amount of damage occurring in a cavitating pump. This new method can quickly diagnose cavitation in pumps, valves, and other fluid system components...
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CS07-0130Rp |
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Cement Mantle Stress Analysis for a Total Hip Replacement Design -
... a hip stem manufacturer came to MSI to develop a better understanding of the effect of their hip stem design on the cement mantle stress distribution and to find ways to improve it...
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CS03-0118M
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Centrifugal Pump/ Steam Turbine/ VFD-Motor Torsional Analysis and Rotor Modification -
A series of centrifugal pumps were to be purchased and installed in a petrochemical plant in Taiwan...
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SB00-0142Rp
Website only |
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CO2 Absorber Column Vibration Problem Resolution -
MSI investigates the source of high displacement vibration at the top of the absorber column at low frequency...
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CS06-0122S |
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Common Vibration Guidelines -
A listing of common vibration frequencies and their sources for rotating machinery on a nicely laminated desk side reference.
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ML06-0134Rl
Mailed upon Request |
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Contact Stress Analysis of a Total Knee Replacement Design -
...Although great strides have been made in improving the wear performance of ultra-high-molecular-weight polyethylene (UHMWPE),
tibial insert wear is still one of the most important failure mechanisms...
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CS03-0154M |
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Cryogenic Testing of a Hydraulic Pump -
A hydraulic pump was failing in a critical safety related service, and a thorough performance evaluation was needed...
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CS01-0112ARp
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Design Considerations for Nonclog Pumps -
The typical nonclog pump is a single volute with the casing and impeller designed with wide passages to pass solids...
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P06-0137Rp
Mailed upon Request |
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Design Optimization of a High Speed Motor Driven Centrifugal Compressor -
Design a centrifugal compressor to be used in a blower application...
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SB07-0128Rc |
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Design Optimization of a Low Pressure Steam Turbine Stage -
Improve the performance of a low pressure (LP) steam turbine stage preserving original rotor count and hub design...
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SB07-0127Rt |
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Detecting a Hidden Lateral Natural Frequency in a Sewage Pump -
The need for municipalities to save money and control energy costs is a driving force in the
decision by many of them to implement the use of Variable Frequency Drives (VFDs) in their operations...
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T04-0135Rp
Mailed upon Request
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Failed Compressor Impeller Solution -
...MSI was contracted by a customer to investigate a failed compressor impeller...
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CS00-0146Rc
Website only |
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Fluid - Thermal Finite Element Analysis of a Printed Circuit Board -
A computer circuit board with a high clock speed processor chip was analyzed in an effort to establish the effectiveness of the cooling system...
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CS01-0126E |
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Gear Tooth Failure Problem Resolution -
MSI performs testing and analysis to determine root cause of gear tooth failures on an aeroderivative gas turbine power generation drivetrain...
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CS07-0139RSo |
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Helicopter Hoists and Winches -
One of the key uses of helicopters for both civilian as well as military purposes is for moving and hauling cargo in a short time-frame, or into awkward locations...
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SB03-0150ARo
Website only |
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Hydro-cracking Pump Rotor Failures -
Impact testing was used to determine the reasons for three failures of a hydrocarbon cracking pump which was critical to a diesel fuel
production process at a major California refinery...
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CS98-0107Rp |
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Identification and Cure for Morton Effect Vibration Amplitude Oscillations in Overhung Compressors -
...compressor gradually had developed symptoms ... of high synchronous vibration levels. Field testing showed that maintaining an
oil inlet temperature above a practical threshold temperature.. prevent further thermal cycling from occurring. The ability to address the problem through a bearing design change is also discussed.
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P07-0138Rc
Mailed upon Request
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Identification and Solution of Pump/Gearbox/Driveshaft/Turbine System Vibration Problem -
A major petrochemical company had a serious gear box failure problem in some service water pumps, driven at variable speed by a steam turbine...
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CS00-0143RSp |
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Impeller Failure Analysis -
MSI investigates a series of blade cracking problems in a compressor Impeller...
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CS98-0104Rc |
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Impeller Vane Pass Acoustic Excitation of Pipe Resonance in a Nuclear Power Plant -
MSI investigates and suggests practical solutions for premature failure
of bearings and seals in a safety-related Decay Heat Removal Pump, a single-stage end-suction volute pump...
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CS06-0120RSo |
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Interference Diagrams:
When Campbell Diagrams Aren’t Enough -
...understand more about Interference Diagrams, how they are used...in assessing the potential for resonance problems in a centrifugal impeller or axial bladed disk...
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T06-0137Rl Mailed upon Request |
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Multi-rotor Gas Turbine Rotordynamic Analysis Incorporating Casing Supports -
An area of concern for gas turbine OEM’s and end users is the effect of casing and structural supports on the
rotordynamic response of multi-rotor systems...
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CS05-0121Rt |
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Nuclear Power Plant Boiler Feed Pump -
A newly constructed European nuclear power plant had all of its main feed pumps exhibiting vibration on the bearing
housings in excess of the vibration specifications ...
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CS98-0102Rp |
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Penetration Analysis -
The goal of the project was to simulate the penetration capability of various lethal and less than lethal projectiles...
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SB06-0151D Website only |
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Plant Expansion/ Revamp Evaluations -
Centrifugal Pump/Steam Turbine/ VFD-Motor Torsional Analysis and Rotor, Lube Oil System
and Bearing Re-design, South American New Refinery Process Compressor/ Gas Turbine Train
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CS98-0111Rp |
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Power Steam Turbine Evaluation -
Vibration testing was performed on an African power plant steam turbine/ generator set to determine the reasons for excessive vibration...
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SB00-0144Rt
Website only
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Process Compressor Re-design -
FEA stress and vibration analysis was performed for three process compressor impellers installed
in highly erosive service. The objective of the analysis was to design a rerated impeller that would result in accurately predicted peak stresses that were at least a factor of safety
of 2.0 below both the tensile yield strength...
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SB00-0149Rc
Website only
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Pump System Seismic Structural Analysis -
MSI principals were contracted through a major OEM to perform their unique time averaged
pulsing (TAP™) impact modal testing on three 30 year old, reliable, packed-stuffing box, multistage barrel pumps in critical refinery process charging service...
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CS00-0152RSp |
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Pump System Structural Analysis -
Mechanical Solutions, Inc. was contracted by a manufacturer to perform a seismic structural
analysis on three identical large pump systems in a low-activity and high-activity nuclear waste treatment process...
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CS06-0129RSp |
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Reciprocating Pump Analysis -
A major domestic pump manufacturer needed to determine the torsional natural frequencies of a machinery train...
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CS98-0103Rp |
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Redesign of Multi-Stage Vertical Pump for the Oil Industry -
Reduce the number of stages required to perform duty for a multi-stage vertical pump...
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SB08-0131Rp |
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Resonant Acoustics Exciting Destructive Vibration at a Nuclear Power Plant -
MSI determines the root cause and solution for the failure of 4 kV switchgear bearings in a nuclear power facility...
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CS06-0119RSo |
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Root Cause Analysis (RCA) –
Axial Compressor Example
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CS08-0132Rc |
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Rotor Instability Problems in an Integrally Geared Compressor -
MSI troubleshoots a newly commissioned critical compressor train experiencing unexplained vibration trips...
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CS01-0116Rc |
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Screw Compressor Noise and Vibration Elimination –
A Midwest coal-fired power plant was experiencing high vibration and noise in an
extensive screw compressor/ piping system required for pollution control...
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SB00-0148Rc
Website only |
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Seismic FEA Analysis of a Vertical Turbine Pump -
A nuclear power company purchased several new service water vertical turbine pumps for their power plant..
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CS00-0113Rp |
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Shock and Vibration Finite Element Analysis of a Printed Circuit Board -
A commercial-off-the-shelf power supply was to be modified for military use. It was not obvious whether the existing design was robust enough to pass the military shock and test protocols...
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CS01-0125E |
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Shop Compressor Shaft and Casing Fatigue Study and Modification -
A new design of motor-driven shop compressor in France was needed to run reliably and quietly...
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SB00-0147Rc Website only |
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Spinal Implant Deployment and In Vivo Performance -
A manufacturer of an innovative spinal implant approached MSI for help in assessing the implant’s structural integrity...
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CS03-0115M |
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Spinal-Implant Fatigue Stress Analysis -
A manufacturer of spinal implant systems had developed a new external-fixation clamping device to the stage that it was ready to undergo required compression-fatigue testing...
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CS04-0117M |
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Steam Turbine Driver Blade Erosion -
Following a lengthy period of service, the LP stages of a nuclear plant boiler feed pump turbine were found to have suffered erosion damage...
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SB00-0145Rt Website only |
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Stop Pointing Fingers (Pumping Station Vibration Problem) -
A vertical solids-handling pump in a sewage plant experienced a classical vibration problem...
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CS98-0110Rp |
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Strain Measurement of a Centrifugal Compressor Impeller via FM Telemetry -
MSI worked closely with a major compressor OEM to specify, install and
conduct strain gage testing of a centrifugal compressor impeller on the OEM test stand...
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CS01-0117Rc |
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Ten Commandants of Pumps and Systems -
10 important issues for consideration when specifying pumps on a nicely laminated desk side reference.
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ML06-0133Rp Mailed upon Request |
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Urea Screener Failure Problems -
The screener had been suffering periodic failures due to cracks along the welds, plates, and structural beams … MSI .. to perform detailed vibration tests and FEA modal and stress analysis...
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CS00-0123S |
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Using TAP™ to Diagnose Critical Speeds of Rotating Machinery -
A special experimental modal analysis technique, TAP™(Time Averaged Pulsing), has been developed by MSI’s engineers...
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CS98-0108Rp |
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Vertical Pump Lineshaft Failures -
...to determine the reasons for chronic lineshaft failures via field test and FEA in some 100 foot (30 meter)
long vertical pumps driven by a diesel engine and a right angle gear, in service on an offshore oil platform. Modeling included the platform structural support system...
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CS98-0109RSp |
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Vibration Failures:
Dynamic Testing and Finite Element Modeling Have Been Successful Diagnostic Methods
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A well-practiced approach is needed to find solutions to failures due to vibration...
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T08-0140RSl Mailed upon Request |
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Vibration Problems in Vertical Pumps -
Automotive Plant Vertical Turbine Pump: A finite element vibration analysis was performed on an automotive company’s proposed VTP installation...
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CS98-0106Rp |