mechanical parts at a plant

Mechanical Engineering

Orion’s team of mechanical engineers combines the education of the Southeast’s finest universities with the practical knowledge gained only through personal experience in the construction and plant operations environments. Years of construction site experience allow our mechanical engineers to consider constructability issues as the project develops, while their operations experience helps them to consider designs from the client’s perspective. This combination of perspectives produces final projects that are as easy to operate and maintain as they are to build.

Orion Engineers & Constructors has an extensive library of equipment specifications and standard data sheets to supplement those of our clients. We also supply our engineers with all the tools necessary to expedite quality and cost effective designs. From piping systems to glass-lined reactors, Orion’s mechanical engineers are prepared to fulfill our clients’ needs.

Orion Engineering has capabilities for both static and dynamic simulations of new and existing piping systems using Caesar II software.  Pipe stress simulations are used to confirm acceptable pipe stress per ASME B31.1 (Power Piping), B31.3 (Process Piping) and ASME B31.4 (Pipeline Transportation).  Static analyses of piping systems are utilized to determine support requirements, identify flexibility requirements to maintain acceptable loads on connected equipment and predict thermal piping movements at elevated temperatures.   Dynamic simulations are performed to analyze piping vibration and fatigue of existing piping, eliminate slug flow (water hammer), design pressure relief valve piping, and seismic events.  Pipe stress analyses are used to provide Orion Engineering’s clients with properly designed piping systems that will operate trouble free over the life of the piping.

Equipment Specification

  • Centrifuges
  • Classification Equipment
  • Drying Equipment
  • Dust Collection Equipment
  • Equipment Erection Specifications
  • Extrusion Equipment
  • Fabricated/Fixed Equipment
  • Filters
  • Heat Transfer Equipment 
  • HVAC Equipment
  • Packaging Systems
  • Pneumatic Transfer Equipment
  • Rotating Equipment
  • Tanks/Vessels

Mechanical Design Work

  • Chilled & Hot Water Systems
  • Compressed Gas Systems
  • Energy Recovery Systems
  • Equipment Data Sheets
  • Fire Protection
  • HVAC
  • Clean Room HVAC
  • Industrial Ventilation
  • Laboratories
  • Plumbing
  • Utility Systems


  • Facility Assessments, Surveys & Analysis
  • Mechanical Integrity
  • Pipe Stress Analysis (CAESAR II Software)
  • ASME Pressure Vessel Calculations (Compress Software)
  • API Tank Calculations

Construction/Procurement Support

  • Bid Evaluation
  • Equipment Fabrication & Final Inspections
  • Field Support
  • Estimating