•  Bechtel 

•  Boise Cascade 

•  British Energy 

•  British Nuclear Fuels, plc 

•  CEZ (Czech Energy Company) 

•  Combustion Engineering Nuclear Power (Westinghouse) 

•  Consolidated Edison 

•  Day Zimmerman 

•  D.O.E. (Department of Energy) 

•  Duke Engineering & Services

•  Dusquesne Power & Light 

•  Ebasco 

•  Ontario Power Generation Corporation 

•  Procter & Gamble 

•  Raytheon Engineers & Constructors 

•  Siemens 

•  Slovenske Energeticke Podniky (SEP)

•  Southern California Edison 

•  Southern Company 

•  Stone & Webster 

•  Toshiba Corporation 

•  Toshiba Engineering 

•  United Engineers 

•  U.S. Army 

•  U.S. Naval Sea Systems Command 

•  Washington Group International Technologies 

•  Westinghouse

• West Valley Nuclear

•  Electric Power Research Institute 

•  GE Nuclear Energy 

•  GiTy, a.s. 

•  GPU Nuclear Corporation 

•  Industrial Design Corporation (IDC) 

•  Jaako Poyry 

•  Jacobs Engineering Group 

•  Kellogg, Brown & Root 

•  KOPEC (Korea Power Engineering Company) 

•  Northrop Grumman 

•  Nuclear Electric, plc