PAI performed nuclear and nonnuclear facility safety analyses to support the Safety Analysis Report Update Program at the Y-12 Plant, East Tennessee Technology Park (ETTP), and Oak Ridge National Laboratory (ORNL). This included performing hazard evaluations and screenings for more than 200 facilities and processes, as well as safety assessments, accident and consequences analyses, risk assessments, and general safety analyses.  BACK TO MENU

PAI specialists evaluated the risk related to a 2-year operating life extension of the temporary tower crane at the Y-12 Plant. The evaluation addressed the risk of accidental nuclear criticality potential caused by an accident during the extended operation period of the crane.  BACK TO MENU

PAI provided a description of complimentary cumulative distribution function (CCDF) methodology, determining the relative ease of adapting methodology to SRS safety analyses, and developed a CCDF for a facility in which accident probabilities and consequences have already been developed (FB-Line).  BACK TO MENU

PAI performed source-term modeling and flow and transport modeling as part of the GAAT RI/FS.  BACK TO MENU

PAI performed risk assessments of toxic chemicals and radionuclides for several hazards assessment projects. PAI identified hazards; evaluated hazardous materials release alternatives; performed risk calculations; performed radiation dose and chemical intake calculations; and evaluated noncarcinogenic, carcinogenic, and radiological health effects on off-site human receptors.  BACK TO MENU

PAI reviewed and revised the PSAR for the Energetic Materials Processing and Support Facility at Mound. PAI also prepared chapters on safety, system risk, and accident analysis. The failure mode and effect analysis (FMEA) and probabilities of occurrence were used in the system risk analysis.  BACK TO MENU

PAI performed air dispersion modeling of the release of hazardous chemicals and radionuclides in air because of fire, spill, earthquake, or tornado scenarios. PAI predicted on-and off-site air contaminant concentration for several hazard analysis projects, including the ETTP Toxic Substances Control Act (TSCA) Incinerator emissions analysis, using CAP88PC and Crystal Ball (for probabilistic analysis).  BACK TO MENU

As part of its management of the ARC Industrial Hygiene Program, PAI performs risk assessments of chemicals by using air dispersion models such as CAMEO, ALOHA, and acoustic models to predict exposures and hazard boundaries.  BACK TO MENU