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Investigation of Process Gas Compressor Shaft Vibration Phenomena
(Turbomachinery Laboratories, Texas A&M Engineering Experiment Station, 2016)
Case Study 13: This paper presents details of investigation results of issues observed during plant start‐up on a centrifugal compressor. Compressor was operated with air/ nitrogen during start‐up and high shaft vibration ...
Remaining Life Assessment of Steam Turbine and Hot Gas Expander Components
(Turbomachinery Laboratories, Texas A&M Engineering Experiment Station, 2016)
Tutorial 16: In today's market place, a large percentage of oil refinery, petrochemical, and power generation plants throughout the world have been trying to reduce their operation cost by extending the service life of ...
Field Evaluation of an Offshore Pumping System
(Turbomachinery Laboratories, Texas A&M Engineering Experiment Station, 2016)
Technical Brief 5: An evaluation was performed on one of the largest offshore facilities belonging to PEMEX Exploration and Production due to forecasts predicting that future crude oil production will contain heavier oils. ...
Frequency Dependence of Piles' Dynamic Stiffness
(Turbomachinery Laboratories, Texas A&M Engineering Experiment Station, 2016)
Technical Brief 6: The evaluation of the dynamic behavior of deep foundations for Turbomachinery Modules is not a simple task due to uncertainties in the evaluation of the soil shear modulus and the approximations introduced ...
Control Systems. Molecular Weight Compensation Consideration in Compressor Surge Control
(Turbomachinery Laboratories, Texas A&M Engineering Experiment Station, 2016)
Tutorial 10B: The effects of gas molecular weight variation on a centrifugal compressor’s surge line and computation of the operating margin from surge for the purposes of antisurge control is discussed using different ...
Coupled Torsional and Lateral Analysis for the Determination of the Damping of the First Torsional Mode of Synchronous Motor Driven Compressor Trains
(Turbomachinery Laboratories, Texas A&M Engineering Experiment Station, 2016)
Lecture 13: This paper deals with the damping ratio D (modal damping) of the 1st torsional mode of synchronous motor driven compressor trains. The damping ratio is a crucial parameter for the torsional start-up analysis ...
A Solution to Years of High Vibration Problems in Three Reinjection Compressor Trains Running at 33 MPA Discharge Pressure
(Turbomachinery Laboratories, Texas A&M Engineering Experiment Station, 2016)
Case Study 22: Over a 13‐year span, a major South American oil company’s maintenance department fought high vibrations in three gas reinjection compressor trains. To reduce the chances of machine trips, technicians field ...
Hydraulic Power Recovery Turbine Operational Failure and Design Enhancement
(Turbomachinery Laboratories, Texas A&M Engineering Experiment Station, 2016)
Case Study 23: PTT operate a number of hydraulic power recovery turbines (HPRT) in their gas processing plants in Rayong Thailand. One of the newest plants incorporates some of the largest such turbines ever produced. The ...
Measurements and Analysis of High Machine Vibration - A case Study of Screw Compressor Rub
(Turbomachinery Laboratories, Texas A&M Engineering Experiment Station, 2016)
Case Study 21: This case study concerns a screw compressor operating in offshore process environment with unpredictable gas composition. The compressor was tripped on high vibration during startup after seals replacement. ...
Considerations in the Design of VFD Motor-Driven Compressors
(Turbomachinery Laboratories, Texas A&M Engineering Experiment Station, 2016)
Tutorial 17: The various drivers for process compressor trains are designed in accordance with the pertinent process requirements. In the case of variable speed applications for process compressors, Steam turbines or Gas ...