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Now showing items 71-80 of 252
CSP09 - Shop Run Test Failure of an API 610 Vertical Sump Pump: what it exposed, and why it was critical to solve.
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, [2019])
This case shall discuss incidents of a deficient inspection affected an API610 vertical sump pumps, supplied to operate in a Sulfur Removal Unit (SRU) for a major gas project. One challenge in such failures is the iterative ...
CSP01 - Vertical Pump Resonance Problem
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, [2019])
Resonance in rotating machinery occurs when a natural frequency is coincident with the operating speed. The issue can be with the rotor bearing system or the pump supporting structure natural frequencies, but the resulting ...
CST11 - Catastrophic Failure Diagnosis with Modal Analysis of Generator Endwindings
(Turbomachinery LaboratoryTexas A&M Engineering Experiment Station, [2019])
In this paper, the catastrophic failure of a 2-pole 360MW unit will be presented. This failure lead a root cause analysis and a series of investigations that was taken place in a similar design unit deployed at a different ...
CSP03 - Motion Amplification Case Study: Relative Motion between Components
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, [2019])
This case study shows how Motion Amplification video has been used to contribute to identifying the root cause of a seal issue. Motion amplification is a video-processing product and software that detects subtle motion and ...
CSP06 - Poor Hydraulic Performance from Large Barrel Pumps
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, [2019])
A pair of large barrel pumps have experienced poor reliability and poor hydraulic performance since their installation in 1993. Despite repeated overhauls and design changes, the problem persisted. A detailed analysis found ...
CSP11 - Testing and Troubleshooting of Pump Dry Gas Seals Operating with sCO2
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, [2019])
During the testing of a 1 MWe power loop with super critical co2, it was discovered that dry ice formation across dry gas seals would be an issue. This case study looks at the negative effects of dry ice formation and how ...
CSP07 - Cavitation in VFD Driven Mainline Pumps in Series
(Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, [2019])
Review of start-up cavitation issue for pumps in series. Presents initial findings, performance curve review and solution that solved the issue.
CST16 - A Systematic Method For Determining the Source of Unbalance in a Rotor Assembly
(Turbomachinery LaboratoryTexas A&M Engineering Experiment Station, [2019])
Unbalance is present in rotor systems due to manufacturing and assembly tolerances which results in synchronous vibration during operation. Adherence to API guidelines relative to acceptable levels of rotor vibration is ...
CST15 - Morton Effect With Pedestal Support Influence
(Turbomachinery LaboratoryTexas A&M Engineering Experiment Station, [2019])
This Morton effect case is unique since the mitigation method during the high speed balance (increasing the bearing clearance) is opposite to the mechanical test method (decreasing the bearing clearance). The investigation ...
CST12 - High Vibration at Low Speed on a 25MW Turbogenerator System - Root Cause Investigation
(Turbomachinery LaboratoryTexas A&M Engineering Experiment Station, [2019])
During the comissioning and filed-tests of the turbogeneration system of an oil platform, low speed high vibration levels were observed on the generator shaft and other neighbouring vibration sensors. The vibration was ...