Now showing items 171-190 of 285

    • Raghavendr, Sreenivas; Guerrero, Armando; Gupta, Manoj (Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2018)
      Suggested Topics: • Turbomachinery bearings • Sleeve and tilting pad journal bearings • Babbitt bearing failures • Bearing upgrades • Clearances • Installation • Oil • Annual seals • Polymer seals -Centrifugal compressor ...
    • Laney, Scot; Dowson, David (Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2018)
      Materials selection is significant with respect to performance, reliability, and longevity of turbomachinery, particularly given the increasing severity of the process environments. The trends are that the selection is ...
    • Mekawey, Sherief; Kuebari, Dum (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. ...
    • Asokan, S.P.; Bhat, Vasanth; Carmody, Chris; Forsthoffer, Michael Sean; Forsthoffer, William Eugene; Lalithkumar, Seetharam; Morton, John; Necker, Nikolaus; Wu, Shifeng (Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2018)
      Mechanical seals are the most common method of sealing industrial centrifugal pumps and other rotary equipment. Although the basic concepts of a seals are simple, successfully using seals requires an understanding of the ...
    • Shages, Christopher; Toth, Peter (Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2022)
      High- cycle fatigue damage imparted on a BB 5 pump impeller operating at low f low operation points was analyzed via numerical methods. A 1 - way Fluid- Structure interaction approach whereby a t ransient CFD subsequently ...
    • Kim, Minho; Kim, Younggon; Kim, Mugeon (Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2018)
      We consistently experienced mechanical seal failure of the oil–flooded screw compressor in the refrigeration system. The first seal failure happened on July, 2015, which is a year passed since start-up. This seal failure ...
    • Necker, Nikolaus (Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2022)
      Multiphase pumps have demonstrated their capability to operate successfully in pumping the product extremes, means 100% liquid up to 100% gas, as well as solids. This duty is difficult for a pump and thus even more difficult ...
    • Necker, Nicholas (Turbomachinery Laboratories, Texas A&M Engineering Experiment Station, 2016)
      Technical Brief 2: Mechanical seals are used in a wide range of industrial applications, sealing gases in a compressor or sealing liquids in a pump. Reliability, longevity, emission control and safety are now more important ...
    • Miller, Harry; Abraham, Ed (Turbomachinery Laboratories, Texas A&M Engineering Experiment Station, 2016)
      Lecture 6: Typical floating production, storage and offloading (FPSO) compression applications are presented, including drivers and auxiliary equipment, and typical compressor operating conditions. Base packages consisting ...
    • Dowson, David (Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2018)
      When components fail it is usually unexpected and the root cause is not always known. Downtime from failure can cost a company many thousands of dollars a day depending on the type of equipment. This cost can be magnified ...
    • Bhattacharya, Mantosh (Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2022)
      The objectives of this tutorial are to familiarize rotating machinery engineers involved in detailed engineering and site operation on various aspects of axial vibration in rotating machinery. Among all rotating machines ...
    • Ghasias, Neetin; Parker, Charles A.; Long, Michael (Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2022)
      Lubricating oil systems are vital to operation, long-term reliability, and availability of turbomachinery trains (or strings) which are strategic and expensive components of industrial plants. Sometimes, the entities that ...
    • Mayne, Trevor; Bowly,Chris (Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2018)
      Investigation into the operation of a 200kW brake oil expander in a 1970’s vintage ethane cracker revealed that maximum gas throughput was significantly below design and that the gas throughput varied significantly in normal ...
    • Moin, Danish (Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2018)
      Urea melt pumps had been a reliability concern since commissioning (1992). Majority of the concerns were related to the failure of mechanical seal. Unexpected failures of seal were encountered during plant startups or ...
    • White, Chris (Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2018)
      Following failure and in-situ replacement of Bearing 1 on a two-shaft 70 MW industrial gas turbine, excessive vibration was observed on Bearing 2 a few months later. This case study describes the vibration symptoms and ...
    • Tokuyama, Shinchiro; Mohit, Goenka; Nakaniwa, Akihiro; Mathew, Ajay; Subramani, Elumalai (Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2018)
      This paper introduces the development of new concept of on-line wash oil injection system which includes the optimization of quantity of washing oil, location of injection nozzles, direction of nozzle entry, hole size as ...
    • Calosi, Mirco; Magnante, Luca; Ranieri, Riccardo; Kobbin, Ibrahim; Pelella, Marco; Lorenzini, Riccardo (Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2018)
      Fixed Speed Electric Motors driving Centrifugal Compressors are designed considering the pressurized start-up as the most critical condition in terms of the torque requirement. Their capability is checked during the design ...
    • Kung, Peter; Dailey, George; Spencer, Craig; Zou, LuFan; Idsinga,Robert (Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2018)
      Gas-fired and air-cooled generators are subjected to continuous start-stop-load cycles related to thermal/mechanical stresses, and continuous vibration. The machines are designed to run at highly efficient material use and ...
    • Visser, Frank; Ketelaar, Mark (Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2018)
      This case study discusses the rerate of a set of vertically-mounted singlestage end-suction centrifugal pumps used for low pressure safety injection (LPSI) in a nuclear power plant. The original LPSI pumps were supplied ...
    • Tinagaran; Ng, Wei Sing (Turbomachinery Laboratory, Texas A&M Engineering Experiment Station, 2022)
      High pressure lean amine pump performance dropped within a span of about 1 month due to internal fouling. Fouling was caused by accumulation of iron sulphide. To address the fouling, pump would have been to taken out of ...