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, Expert Witness Services

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

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

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

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

Click topics to view other pages.


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

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

company Services

Vibration Analysis

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