Phenomenological Modeling & Software Development

OMICRON provides phenomenological modeling and software development services to both nuclear and nonnuclear facilities. We also perform phenomenological analyses in support of other OMICRON core capabilities, such as safety basis documentation, design safety evaluations, nuclear power and reactor applications, and homeland security and risk assessment.

• Phenomenological Modeling: OMICRON staff has been using phenomenological and risk analysis modeling techniques for more than 12 years. We have modeled fires, explosions, spills, hazardous material dispersion and facility leakpath factors, criticality, radiological shielding, heat transfer and fluid flow, severe nuclear reactor accidents, and vulnerability assessments using various computer codes.
  
  Neutronics/Shielding—Computer codes, such as the MCNP, KENO, and SCALE Package computer codes, are used to perform nuclear criticality, shielding, and dose analyses.
  
  Thermal-Hydraulics/Dispersion-Consequence—Computer codes, such as MELCOR, CONTAIN, MAAP, RELAP, TRAC, MACCS2, ALOHA©, RSAC, CFAST, and FDS, are used to analyze severe reactor accident scenarios, including leak path source term modeling and off-site consequences.
  
  Probabilistic Risk Assessment—Computer codes, such as SAPHIRE, SANET, SABLE, FTAP, SEATree, IMPORTANCE, and LHS, are used in support of risk analysis activities, including reliability assessments, fault and event tree analyses, sensitivity and uncertainty analyses, and risk/cost-benefit evaluations.
  
  Explosives—Computer codes, such as BLASTX, CHEETAH, and CTH, are used to conduct shock physics analyses, explosion calculations (high explosives, flammable gases), and explosive breaching, fragmentation, and barrier analyses.
• Software Development: OMICRON has supported development of computer codes that focus on phenomenological modeling, databases, and risk analysis. Our software development services include preparing documentation, such as detailed Verification and Validation (V&V) documentation that meets the requirements of DOE O 414.1C. Examples include:
  
  Hydrogen—OMICRON provided assistance in developing the MELCOR-H2 computer code for the Hydrogen Production Project at Sandia National Laboratories.
  
  Databases—Our database development services include designing and developing databases with user-friendly interfaces to help our customers keep track of important information efficiently.
  
  Shock Physics—OMICRON assisted U.S. Department of Energy (DOE) laboratories in developing computer programs for calculations related to slow cooking of high explosives, nuclear fusion (Z pinch), and explosion using MATLAB©, MATHEMATICA©, and MATHCAD©.
  
  OMICRON has substantial experience in computer programming using FORTRAN, Java©, Basic, C++ (including Visual C++©), Access Database©, and Visual Basic©. We are also experienced in using off-the-shelf mathematical, engineering, and general purpose packages, such as AUTOCAD©, Flex PDE© , Code Warrior©, FLOW 3D© (proprietary CFD code), and @RISK©/Crystal Ball©, and we are proficient in UNIX©, Linux©, Windows©, and Macintosh© operating systems.