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Overcoming Failure of Synchronous Motor Driven Compressor Train by Application of Controlled Slip Clutch
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2020)
This case study describes failure incident of a centrifugal compressor, its root cause investigation, and countermeasure implementation. An integrally geared centrifugal air compressor driven by a synchronous motor failed ...
DEVELOPMENT OF ROTOR CONTACT DETECTING SYSTEM FOR DRY SCREW COMPRESSOR
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2020)
DRY screw compressors have the characteristics of a positive displacement typerotary compressor, are used in a wide range of applications. DRY screw compressors are often treated as one of the important equipment inplants. ...
Modernization of 75 year old Turbo Generator Emergency Trip System
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2020)
This case study presents lessons learned during the retrofit of two 75-year old Turbo Generator (TG) overspeed trip systems to meet the latest edition of API 612. The effort was initiated due to reliability issues with the ...
Resolution of Check Valve Failures in Reciprocating Compressors
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2020)
Discharge line check valves for reciprocating compressors are subjected to pressure pulsations, varying flow rates, and debris in the gas stream. Consequently, swing check, piston check, and modified plate-style compressor ...
Successful 2 planes balancing confirm by rotordynamics calculation
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2020)
This historical case is focus on the vibration behavior of a generator. After a short circuit issue on the grid, the machine train trip. At this time the level of vibration of the generator was acceptable and well below ...
Resolving Centrifugal Compressor Aerodynamic-Performance Issues Related to Inlet Flow Distortion
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2020)
A compressor aero-performance issue occurred during in-house Type 2 testing of a centrifugal compressor – the overload limit was close to the expected design capacity. Root cause analyses initially focused on the compressor ...
Aerodynamic Design of Centrifugal Compressor Components Around Existing Rotor
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2020)
This case study covers the aerodynamic design of a centrifugal compressor that replaced an aging compressor experiencing leakage issues. The replacement compressor was required to reuse the existing rotor, bearings, seals, ...
Case Study on investigation and safe resolution of using instrument air as separation medium for Dry Gas Seals
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2020)
During the independent Asset Integrity Review (i-AIR) audit conducted on one of the offshore production facility, use of instrument air as separation medium for separation seal of the process gas booster compressors Dry ...
Lube Oil Carbonisation
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2020)
Carbonized particles can get deposited in housing oil seal clearances causing a partial rub like phenomenon. Friction caused due to reduced clearances because of accumulation of carbonized particles leads to shaft thermal ...
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 ...