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Steam Whip Phenomenon in Steam turbine
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2018)
This case study is designed to outline how the high vibration issue was successfully diagnosed, the root cause for the high vibration found and correction actions recommended. The source of mentioned high vibration - sub ...
PT09 - Submersible pump condition monitoring using motor current signature analyses and vibration analyses comparison
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, [2019])
The paper further shows the real case studies, analyses and findings on Submersible Pumps. The article contrasts the similarities vs. differences and advantages vs. disadvantages of both methods and may be of value for ...
High Vibration Due to Steam Turbine Deposits
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2018)
This presentation provides a case study how to correctly deal with increased vibration on a steam turbine that drives a compressor. After the machine had not operated for a week, vibration level increased 5 times during ...
Resolving Structural Vibration Issues On a Multi Stage Pump
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2018)
There are three multistage pumps supplied as part of a new project for transporting diesel from one location to another.
Earlier, the transportation of diesel was carried out using trucks for this facility. The availability ...
CST05 - Fluid-Film Bearing Damage Detection Based on Vibration Data�
(Turbomachinery LaboratoryTexas A&M Engineering Experiment Station, [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 ...
Pump Tut - WHY MACHINES FAIL TO FOLLOW TEXTBOOK STATED RULES, AS ILLUSTRATED BY SHAFT CRACK AND ROTOR SELF EXCITED VIBRATION CASES IN CRITICAL MACHINERY
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2020)
This tutorial demonstrates some aspects of rotating machinery diagnostics where there is an apparent difference between the actual response of a machine and its expected behavior for a certain type of malfunction as typically ...
Self excited torsional vibration in single shaft combined cycle turbine-generator train
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2020)
This case history describes the investigation of the source of unstable behavior of a newly commissioned single-shaft, combined cycle, power generator unit. The source was found to be nonlinear operation of the flexible ...
How to detect Electrostatic discharge (ESD) using proximity probes on rotating machines
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2020)
In this session, a brief introduction about electrostatic discharge phenomena will be done. Then three historical cases with Electrostatic Discharge (ESD) issue will be analyzed in order to explain how to detect Electrostatic ...
Detection of Broken Blade on Compressor
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2022)
A sudden step change in vibration was observed on a 7400 rpm compressor with direct amplitude from 43 um pp to over 62 um pp (trip level) at NDE, thus tripping the unit Vibration reached over 120 um pp at 4000 rpm, compared ...
COMPRESSOR ROTOR CRACK CASE
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2022)
The case study describes rotor crack detection using vibration measurements, documented on real case of Induction Motor driven Compressor Unit. The study highlights the complexity of rotor crack diagnostics as the primary ...