PFES nuclear engineers have over 100+ years of international design modification experience that will contribute to shorter plant outages and meet or exceed all code, regulatory and design requirements, and inspections for the utility owner.

As worldwide demand for energy continues to grow, customers across the globe rely on PFES for field-proven engineering implementation that keep critical operations in motion. We have a unique approach to modification engineering design that has been developed through our in-depth experience.

Because of variances in demands, we recognize that our commercial nuclear customers often require customized solutions.  Our expert staff possesses our well-proven engineering and design processes to perform nuclear plant modifications for both individual station design and custom designs.  PFES’s Modifications & Engineering team is dedicated to providing customers with application and system engineering support.  By applying standard templates and programs with customization as needed, we will provide efficient, high-quality deliverables at a low cost.

No matter where customers are located, PFES has a regional office location nearby.  Our clients are supported by global PFES engineering offices and the industry’s largest network of nuclear engineers that provide local support.



Digital Control Upgrades
  • Breaker Replacements
  • Pump Replacements
  • Turbine Rotor Replacements
  • Feedwater Heater Replacement
  • Cooling System Upgrades
  • Buried And Above Ground Piping Replacement
  • Extended Power Uprate
  • Security Upgrades
  • Dry Cask Storage Facilities