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Now showing items 1-9 of 9
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 ...
SILO EXHAUST FAN – STRUCTUAL VIBRATION ODS AND MA
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2022)
This case study outlines how structural vibration was resolved using two different technologies and highlighting secondary issues that can arise due to continued vibration because of structural resonance. Continued high ...
Vibration issue on Compressor in a Nitric Acid Plant (Part 2)
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2022)
“Part 1 of the case history for this return to service follows on from the 2021 ATPS “ presentation which covered off the Expander related issue (labyrinth seal rubs) preventing the NAP 2 plant from successfully re ...
ELECTROSTATIC DISCHARGE� STG COMPRESSOR
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2022)
Electrostatic discharge (ESD) can cause catastrophic mechanical damage and lower the life span of an asset if not detected early and rectified. Continuous discharge of static electricity can cause micro pitting of bearing ...
Power Turbine Field And Shop Balance Experience
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2022)
A power turbine (PT) experienced a high 1X vibration issue. Balancing was attempted at two accessible planes on the shaft section. However, the unit could only operate with vibration below the alarm level in steady-state ...