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

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

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

PUMP APPLICATIONS

water hammer

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

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

Vibration Analysis

Piping FAILURES

  • 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.

Click topics to view other pages.

LEISHEAR ENGINEERING, LLC

company Services

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

  • ​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.

FLUID FLOW AND MIXING