CivilFEM® NPP is most advanced, comprehensive and reputable analysis and design software package available for structural analysis and design of nuclear plant engineering projects, CivilFEM NPP is compatible with all CivilFEM products, offering additional capabilities for the design and simulation of nuclear power plant structures and buildings, such as built-in specific NPP codes and quality assurance verification according to NRC 10 CFR PART 21 and 50.
More informations about CivilFEM NPP you can find on following link:
http://www.civilfem.com/products/civilfem-powered-by-marc/civilfem-expert-npp/