Troubleshooting, Research, Accident and Failure Analysis, and Design for Fluid Systems:

Fluid Flow, Water Hammer, Structures, Piping, Pumps, Instrumentation, and Vibrations

  • ​Analysis, computer modeling, and testing.
  • Pipe system fluid flow design.
  • Steam, air, gases, liquids, and two phase flow.
  • Mixing problems. 
  • Valve selection and system control.
  • Instrumentation.


  • Vibration causes of machinery failures identified and corrected.
  • Rotational and reciprocating machinery.
  • Pumps, compressors, motors, and fans.
  • Piping vibrations.

water hammer

Robert A. Leishear, Ph.D, P.E., PMP

Consulting Engineer, ASME Fellow, Journeyman Sheet Metal Mechanic, Welder, Machinery Electrician

​NACE Senior Corrosion Technologist, NACE Senior Internal Corrosion Technologist

  • Failure analysis, calculations, prevention, and corrective actions.
  • Piping system structural design.
  • Piping fatigue failures.
  • Corrosion.
  • Pipeline explosions.
  • Pipeline ruptures.
  • ​Water main breaks.


  • Initial pump selection and system design. 
  • Troubleshooting of installed pumps and compressors.
  • Centrifugal, radial, metering, jet, and positive displacement pumps.
  • VFD controls.

See below for "Company Services", and see other pages for example accomplishments and skills.

company Services

  • Fluid transients in new or existing piping systems. 
  • Evaluations,   Calculations, and Corrective actions.
  • Pump startup.
  • Pump shutdown.
  • Valve operations.


Click topics to view other pages.


Vibration Analysis

Stop pipe system problems that include: water main breaks, fluid flow problems, pump and compressor failures, controls, and pipeline explosions