Browsing by Author "International Pump Users Symposium (13th : 1996)"

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    • Abrasive Wear In Pumps - A Tribometric Approach To Improve Pump Life 
      Vetter, Gerhard; KieBling, Ralph; Wirth, Wolfgang (Texas A&M University. Turbomachinery Laboratories, 1996)
      The reduction of abrasive wear and extension of the endurance of pumps requires a system analysis. Various pump types demonstrate different tribological systems under abrasive wear, which are basically dominated by sliding, ...
    • ASME B73.1m Pump Reliability Program Formation - A Data Based Approach 
      Hrivnak, Steven J. (Texas A&M University. Turbomachinery Laboratories, 1996)
      Data are being used to determine business decisions in this day of competitive business. In years past, many business decisions have been made without the data to support them. Today, with the use of new computer programs, ...
    • A Case Study: Unusual Problems Discovered During The Rerate Of 2800 HP Boiler Feed Water Pumps And Turbines 
      Henderson, John P. (Texas A&M University. Turbomachinery Laboratories, 1996)
      The boiler feedwater system in a world scale ethylene plant utilized horizontal multistage barrel case pumps and single stage impulse type steam turbine drivers with mechanical governors. As part of a major debottlenecking ...
    • Centrifugal Pump Vibration Caused By Supersynchronous Shaft Instability 
      Smith, Donald R.; Price, Stephen M.; Kunz, Friedrich K. (Texas A&M University. Turbomachinery Laboratories, 1996)
      Many centrifugal pump vibration problems are due to synchronous phenomena such as vane-pass frequency energy and running speed energy. To address such problems, guidelines have been developed to assist with their identification ...
    • The Control Of Variable Speed Pumps In Parallel Operation 
      Crease, Anthony B. (Texas A&M University. Turbomachinery Laboratories, 1996)
      The features are discussed of a PLC based control scheme that was developed for a multipump pumping station to be used to supply oil field produced liquids (crude oil and associated water) from tanks through a dehydration ...
    • Design And Testing Of Seals To Meet API 682 Requirements 
      Gabriel, Ralph P.; Niamathullah, Syed K. (Texas A&M University. Turbomachinery Laboratories, 1996)
      In recent years, manufacturers of mechanical seals have been faced with meeting more stringent leakage requirements along with reliability and extended MTBPM. Regulations by Environmental Protection Agency and standards ...
    • Determination Of NPSHR For Reciprocating Positive Displacement Pumps - A New Approach 
      Singh, Pawan J.; Able, Stephen D. (Texas A&M University. Turbomachinery Laboratories, 1996)
      NPSHR is a significant pump characteristic; it is often taken as a measure of minimum suction head needed to operate a pump satisfactorily. Hydraulic institute, among others, specifies a measurement of procedure for NPSHR, ...
    • Development Of A Noncontacting Seal For Gas/Liquid Applications Using Wavy Face Technology 
      Young, Lionel A.; Key, William E.; Grace, Ronald L. (Texas A&M University. Turbomachinery Laboratories, 1996)
      A seal has been developed and tested that incorporates a circumferential wave pattern with a sealing dam formed on a SiC face, using a proprietary process. When run against a flat carbon face, laboratory tests show that ...
    • Double Row Angular Contact Ball Bearings In Centrifugal Pumps. 
      Meyers, Keith (Texas A&M University. Turbomachinery Laboratories, 1996)
      Double row angular contact ball bearings are used extensively in ANSI type end suction centrifugal pumps and other fluid machinery. The double row angular contact ball bearing supports combined axial and radial loads, ...
    • Experimental Investigations In Respect To The Relevance Of Suction Specific Speed For The Performance And Reliability Of Centrifugal Pumps 
      Stoffel, Bernd; Jaeger, Ralf (Texas A&M University. Turbomachinery Laboratories, 1996)
      Recently, several recommendations have been proclaimed concerning limitations of the maximums suction specific speeds (n85) of centrifugal pumps. These recommendations result from statistical evaluations of pump failures ...
    • Field Investigation Of Bearing Housing Oil Cleanliness 
      Adams, William V.; Erickson, R. Barry; Needelman, Bill; Smith, Michael D. (Texas A&M University. Turbomachinery Laboratories, 1996)
      The service life of rolling element bearing in centrifugal chemical process pumps is an issue of increasing concern. A key factor influencing bearing service life is the condition of the bearing lubricant. Several industrial ...
    • Improved Mechanical Seal For High Pressure Pumps In Severe Abrasive Tailings Services 
      Manning, Frank E.; Mosher, Rod; McCullough, Doug (Texas A&M University. Turbomachinery Laboratories, 1996)
      The cost of high pressure gland water and increasing environmental concerns have made the use of flushless mechanical seals attractive in many slurry applications. One such application exists at Syncrude Canada Lts (SCL). ...
    • Mag Drive Pumps: Why They Work - How They Fail 
      Stevens, Micheal T. (Texas A&M University. Turbomachinery Laboratories, 1996)
      As the use of magnetic drive pumps become more popular and sometimes demanded, knowing how to install, operate and troubleshoot mag drive pumps becomes essential. System design, purchasing, installing, and commissioning ...
    • Material Problems And Solutions - A Metallurgical Perspective 
      McCaul, Colin (Texas A&M University. Turbomachinery Laboratories, 1996)
      Pumps are an essential component of most industrial processes. Reliability is a major concern of pump manufacturers and users, since unexpected shutdowns can have serious and costly implications, including loss of production. ...
    • Multiphase Gas-Liquid Pumping 
      Cooper, Paul; Schiavello, Bruno; Salis, Jacques de; Marolles, Charles D.; Prang, Allan J.; Broussard, Dan (Texas A&M University. Turbomachinery Laboratories, 1996)
      Pumping crude oil and gas without prior separation greatly reduces the machinery and platform space required. Multiphase pumps can be located at the surface or subsea and are designed primarily as a) two-screw rotary or ...
    • Slurry Pipeline Design For Operation With Centrifugal Pumps 
      Addie, Graeme R. (Texas A&M University. Turbomachinery Laboratories, 1996)
      The following covers what the writer sees as the main considerations involved in the design of a slurry pipeline. It is broken down into sections. This section is concerned mainly with the slurry and design of the hydraulics ...
    • The Suction Performance Of Centrifugal Pumps Possibilities And Limits Of Improvements 
      Hergt, Peter; Nicklas, Alexander; Mollenkopf, Gerhard; Brodersen, Sonke (Texas A&M University. Turbomachinery Laboratories, 1996)
      Following a brief description of the general suction performance of pumps and starting from an impeller designed for standard requirements, it will be discussed by which modifications and up to which limit the suction ...
    • Table of Contents for the Proceedings of the 13th International Pump Users Symposium 
      International Pump Users Symposium (13th : 1996) (Texas A&M University. Turbomachinery Laboratories, 1996)
    • Torsional Vibration In Pump/Driver Shaft Trains - The Role Of External Damping From Pump Impellers 
      Nordmann, Rainer; Weiser, Peter; Frei, Arno; Stuerchler, Rudolph (Texas A&M University. Turbomachinery Laboratories, 1996)
      Consideration of torsional vibration in pump/driver shaft trains has become of increasing importance with the development of electronically controlled variable speed electric motors. Such motors not only provide a static ...
    • The Use Of Basic Hydraulics To Solve Field Problems: Three Cases 
      Nelik, Lev; Silvaggio, Joseph A.; Joseph, John P; Freeman, Jeffery (Texas A&M University. Turbomachinery Laboratories, 1996)
      Single stage double suction horizontally split pumps are widely used in cooling tower water applications. Their operational record varies depending on installation (sump and piping detail), mode of operation, speed, specific ...