Piping systems must be able to tolerate variations in pressure caused by starting or stopping pumps, opening or closing valves, filling and draining, etc. Piping systems should be analyzed to quantify transient pressures. For many systems, it is helpful to use a numerical model to quantify transient pressures and determine if and what type of surge protection is needed.








  • Application Guidelines for Check Valves in Nuclear Power Plants. Electric Power Research Institute, 1993. (Kalsi Engineering, Inc., and J. Paul Tullis)
  • Hydraulics of Pipelines--Pumps, Valves, Cavitation, Transients. John Wiley & Sons 1989. (J. Paul Tullis)
  • Closed Conduit Hydraulics. Utah State University, Logan, UT, 1982. (J. Paul Tullis)
  • Control of Flow in Closed Conduits. Litho-Crafters, Ann Arbor, Michigan, 1971, 557 p. (J. Paul Tullis, ed.)

Refereed Journal Publications

  • Multiple Subcritical Arterial Stenoses: Effect on Poststenotic Pressure and Flow. Annals of Surgery, 1976. (D. P. Flanigan, J. Paul Tullis, V. L. Streeter, W. M. Whitehouse, Jr., W. Fry, and J. C. Stanley)
  • Waterhammer Analysis with Air Release. Proceedings, Second International Conference on Pressure Surges, The City University, London, September 22-24, 1976. (J. Paul Tullis, V. L. Streeter, and E. B. Wylie)

Published in Conference Proceedings

  • Pipe Collapse Caused by a Pipe Rupture - A Case Study. Proceedings of the International Meeting on "Hydraulic Transients With Water Column Separation," September 4-6, 1991, Valencia, Spain. (J. Paul Tullis, and Reynold Watkins)
  • Influence of Entrapped Air on Transients. Presented at the International Conference on Transients, Sao Paulo, Brazil, July 1982. (J. Paul Tullis)
  • Air Release During Column Separation. Presented at the ASME Winter Annual Meeting December 1981 in Washington, D.C. (J. Paul Tullis)
  • Water Hammer Analysis with Air Release. Presented at the 2nd International Conference on Pressure Surges, BHRA, London, September 22-24, 1976. (J. Paul Tullis, V. L. Streeter and E. B. Wylie)

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Unpublished Papers and Reports

  • Transient Analysis of the San Joaquin Pipeline. Prepared for San Francisco Public Utilities Commission, (J. Paul Tullis)
  • Filling of mountain tunnel for Hetch Hetchy, (J. Paul Tullis)
  • Computer Modeling Multiple Arterial Stenoses, (Victor Streeter and J. Paul Tullis)
  • Multiple Arterial Stenosis: Effects on Flow and Post Stenotic Pressure, (Victor Streeter and J. Paul Tullis)
  • Major professor for several MS theses and PhD dissertations on transient problems, (J. Paul Tullis)
  • Transient analysis of circulating and auxilliary water pumps systems for Los Esteros Critical Energy Project, (J. Paul Tullis)
  • Transients caused by start-up of circulating water pumps at D C Cook nuclear power plant, (J. Paul Tullis)
  • Computer analysis of pipeline collapse due to surge pressures resulting from a pipeline break, (J. Paul Tullis)
  • Analysis of ruptured pipe in cooling plant at a hospital in South Dakota due to air trapped in pipe at pump start-up, (J. Paul Tullis)
  • Analysis of transients in penstocks adn surge protection equipment at several hydropower installations, (J. Paul Tullis)
  • Analysis of vibrations and pressure surges in nuclear pump test loop for Bingham Pump Co, (J. Paul Tullis)
  • Field testing and computer analysis of transients caused by starting and stopping pumps in pipelines at a sewage pump station for Northglenn City, Colorado, (J. Paul Tullis)
  • Field testing and computer simulation of an irrigation pipeline, Fielding Utah, (J. Paul Tullis)

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