Browsing Turbomachinery and Pump Symposia by Author "International Pump Users Symposium (15th : 1998)"
Now showing items 1-20 of 23
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Flach, Patrick M.; Murphy, Mark J.; Anderson, William I. (Texas A&M University. Turbomachinery Laboratories, 1998)For many years, acceptable seal performance was defined as “minimal or no visible leakage.” During the last decade, these definitions have changed immensely as government and industry have combined in a massive effort to ...
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Wood, Daniel W.; Hart, Robert J.; Marra, Emesto (Texas A&M University. Turbomachinery Laboratories, 1998)A case history is presented pertaining to five (four operating and one spare), 150 hp sealless pumps operating in parallel in a closed loop-65° chilled liquid system. The pumping system is designed to use a liquid refrigerant ...
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Wilkinson, E. V.; Ross, Robert R.; Edmisten, Ron L. (Texas A&M University. Turbomachinery Laboratories, 1998)As part of a major California refinery expansion project, a Delayed Coker was engineered with two heater charge pumps. Unfortunately, during the initial operations, both pumps failed within a few days of each other, causing ...
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Pembroke, John P.; Sabini, Eugene P.; Littlefield, David E. (Texas A&M University. Turbomachinery Laboratories, 1998)In 1991, four large double suction cooling pumps were installed at a chemical plant in Texas. Although these pumps met performance specifications on the test stand, they proved to be noisy when installed. Sound power levels ...
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Guinzburg, Adiel; Buse, Frederic W. (Texas A&M University. Turbomachinery Laboratories, 1998)For applications that involved fluids with a high rate of change of vapor pressure or low specific heat, it was found that there could be inadequate flow through the thrust bearing. This effect was compounded by the heat ...
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Bleu, Julien Le; Lobach, James (Texas A&M University. Turbomachinery Laboratories, 1998)All centrifugal sealless pumps, both canned motor and magnetic drive, should be monitored to determine mechanical condition. In sealless pumps, the pumped fluid is used as the cooling and lubricating medium for the pump ...
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Budris, Allan R.; Mayleben, Philip A. (Texas A&M University. Turbomachinery Laboratories, 1998)Explanations and guidelines for the phenomena of cavitation noise above the NPSHR of a pump are presented, backed by laboratory and field tests. The hydraulic Institute Concepts of low, and very high suction energy, and ...
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Kepple, W. E.; Read, Dave W.; Zeidan, Fouad Y.; Paraskevakos, Christian; Dawson, Matthew P. (Texas A&M University. Turbomachinery Laboratories, 1998)Boiler feedwater (BFW) pumps are among the most critical rotating equipment in power plants. The bearings in these pumps must be able to attenuate rotor vibrations and other hydraulic forces while still maintaining a high ...
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Parker, David B. (Texas A&M University. Turbomachinery Laboratories, 1998)High temperature applications present many engineering problems. Thermal growth of piping and vessels, coupled with typically lower viscosities at high temperature, has made centerline mounted centrifugal pumps the primary ...
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Perez, Robert X.; Knight, Claude (Texas A&M University. Turbomachinery Laboratories, 1998)The authors present two case studies where improperly applied hydraulics resulted in poor mechanical reliability, due to chronic flow instability problems. A successful hydraulic rerate of these pumps, which required minimal ...
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Verhoeven, Jan J.; Redpath, David; Kerr, Angus F. (Texas A&M University. Turbomachinery Laboratories, 1998)High pressure hydrocracker charge is one of the most arduous services for multistage centrifugal pumps in the refining industry. Future plant capacity requirements of the hydrocracker unit at a United Kingdom site required ...
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Marscher, William D.; Campbell, Jack S. (Texas A&M University. Turbomachinery Laboratories, 1998)This tutorial discusses mechanical problems that occur in pumps and their systems, and how pump users can best detect and solve these problems. The answers to pump operational or reliability problems are often not obvious, ...
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Mathis, Allan; Melancon, Joseph L.; Trackwell, Fred (Texas A&M University. Turbomachinery Laboratories, 1998)Recent industrial advances in secondary containment methods have increased the role of secondary containment systems in environmental corporate strategies aimed at lowering the risks associated with leakage from primary ...
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Buse, Frederic W.; Cappellino, Charles A.; Rollings, Robert C. (Texas A&M University. Turbomachinery Laboratories, 1998)Polymers are important materials in the design and application of pumps and piping in many chemical processing systems today. The ability of polymer composites to resist chemical attack is the primary reason for use in ...
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Visser, Frank C.; Backx, Jack J.M.; Geerts, Jan; Cugal, Mike; Medina Torres, D. Miguel (Texas A&M University. Turbomachinery Laboratories, 1998)This paper describes the successful application of cavitation flow visualization to redesign the impeller of an 8.5-MW (11,400 hp) high energy double suction single stage boiler feedpump. Dual purpose of the investigation ...
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Wallace, Neil M.; David, T. John (Texas A&M University. Turbomachinery Laboratories, 1998)Market pressures are demanding cost reductions in the process industries. Most operators are seeking to achieve substantial savings through reductions in the maintenance and “real” operating costs of centrifugal pumps of ...
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Corbo, Mark A.; Malanoski, Stanley B. (Texas A&M University. Turbomachinery Laboratories, 1998)One of the foremost concerns facing pump users today is that of rotordynamics. As pump speeds have increased to provide improved efficiencies and lighter packages, rotordynamics has assumed a significantly greater role in ...
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Blodgett, Larry E. (Texas A&M University. Turbomachinery Laboratories, 1998)In order to ensure safe, reliable, efficient and cost effective operation of reciprocating pumps, pump dynamics should not be ignored. Pump problems due to dynamics are often difficult to diagnose and solve. Dynamic problems ...
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Smith, Michael D. (Texas A&M University. Turbomachinery Laboratories, 1998)Sixteen (nine 1500 hp and seven 500 hp) single stage, vertical turbine, cooling water pumps suffered massive metal loss within two years of installation. All pumps had cast iron suction bells and semiopen, manganese bronze ...
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Greutink, Herman A. J. (Texas A&M University. Turbomachinery Laboratories, 1998)Shafting and different sleeve type bearing systems, and the associated lubrication arrangements to support these systems in vertical diffuser type pumps, are discussed.