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Submission: On December 06 via manual from US — Scanned from FR
Submission: On December 06 via manual from US — Scanned from FR
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Text Content
Menu * About Open submenu * Products Open submenu * Tools Open submenu * Research and Development Open submenu Close submenuAbout * History * Expert Services * NARAC Facility * Sponsors * Event Timeline * Publications * Contacting NARAC and Tours Close submenuProducts * Briefing Products Open submenu * Technical Products Open submenu * Supplementary Products Close submenuBriefing Products * Radiological Dispersal Device (RDD) * Nuclear Detonation * Nuclear Power Plant Accident * Hazardous Chemical * Biological Agent Close submenuTechnical Products * Unknown Material * Toxic Industrial Chemical * Chemical Warfare Agent * Biological Agent * Radiological Dispersal Device * Nuclear Detonation * Nuclear Power Plant Accident * Blast Damage Close submenuTools * Operational Modeling Open submenu * Mission Planning Tool * Web Tools * HotSpot and EPIcode * Software Quality Assurance Close submenuOperational Modeling * System Architecture * Grid Generator * Meteorological Data Assimilation Model (ADAPT) * Weather Research and Forecasting Model (WRF) * Dispersion Model (LODI) * Geographical Data * Meteorological Data * Hazardous Material Property and Exposure Data * Specialized Models * Source Models * Model Testing and Evaluation * Model Refinement Using Measurement Data Close submenuResearch and Development * Numerical Weather Prediction Modeling * Radar-Derived Wind Data * Physical Process Model Improvements * Radiological Dispersion Device (RDD) Modeling * Nuclear Fallout Modeling * Urban Field Studies * Urban Dispersion Modeling * Dense Gas Transport in Complex Environments * Indoor Exposures * Source Term Estimation (Inverse Modeling) * Cluster Computing Skip to main content * Our Purpose * Our Science and Technology * Join Our Team * Partner with Us * News * Community and Education * About NARAC PRIMARY MENU * About * History * Expert Services * NARAC Facility * Sponsors * Event Timeline * Publications * Contacting NARAC and Tours * Products * Briefing Products * Radiological Dispersal Device (RDD) * Nuclear Detonation * Nuclear Power Plant Accident * Hazardous Chemical * Biological Agent * Technical Products * Unknown Material * Toxic Industrial Chemical * Chemical Warfare Agent * Biological Agent * Radiological Dispersal Device * Nuclear Detonation * Nuclear Power Plant Accident * Blast Damage * Supplementary Products * Tools * Operational Modeling * System Architecture * Grid Generator * Meteorological Data Assimilation Model (ADAPT) * Weather Research and Forecasting Model (WRF) * Dispersion Model (LODI) * Geographical Data * Meteorological Data * Hazardous Material Property and Exposure Data * Specialized Models * Source Models * Model Testing and Evaluation * Model Refinement Using Measurement Data * Mission Planning Tool * Web Tools * HotSpot and EPIcode * Software Quality Assurance * Research and Development * Numerical Weather Prediction Modeling * Radar-Derived Wind Data * Physical Process Model Improvements * Radiological Dispersion Device (RDD) Modeling * Nuclear Fallout Modeling * Urban Field Studies * Urban Dispersion Modeling * Dense Gas Transport in Complex Environments * Indoor Exposures * Source Term Estimation (Inverse Modeling) * Cluster Computing Search Search Search Search MOBILE MENU SITE MENU * About * Products * Tools * Research and Development LLNL MENU * Missions * Research * Doing Business * News * About * Careers * Community > Providing expertise and tools to predict and map the spread of hazardous > material accidentally or intentionally released into the atmosphere NARAC is a national support and resource center for emergency planning, real-time assessment, emergency response, and detailed studies of atmospheric releases of nuclear, radiological, chemical, biological, and hazardous natural materials. Located at the Department of Energy/National Nuclear Security Administration's (DOE/NNSA) Lawrence Livermore National Laboratory (LLNL), NARAC provides timely and accurate plume predictions to aid emergency preparedness and response efforts in protecting the public and the environment. Since 1979, NARAC has provided support for numerous accidents or potential incidents, and celebrated its 40th anniversary in 2019. -------------------------------------------------------------------------------- NARAC Web CMweb IXP HotSpot EPIcode × NARAC WEB Web site that provides authorized users access to NARAC modeling tools and products through an easy-to-use interface Close × CMWEB Web site for distribution of DOE/NNSA Emergency Response Consequence Management information and products to authorized users Close × IXP Web site that provides International Atomic Energy Agency member states with access to 3-D model predictions of the consequences of airborne radiological releases from NARAC and other Global Dose Assessment Centers Close × HOTSPOT PC-based atmospheric dispersion software package for rapid assessments of the downwind hazard from a radiological release Close × EPICODE For analyzing atmospheric dispersion hazards from toxic chemicals, NARAC develops and maintains EPIcode on behalf of DOE, for use within the DOE/NNSA complex. Close -------------------------------------------------------------------------------- RUTHENIUM DETECTIONS ACROSS EUROPE (2017) 1. 2. 3. 4. Estimating atmospheric sources from radionuclide detections Monte Carlo design for Ru-106 source estimation—5,184 transport simulations and 6 uncertain source parameters Bayesian analysis provides 6-dimensional posterior probability distribution function for Ru-106 source parameters Bayesian analysis provides a maximum likelihood Ru-106 source location probability map Previous Next -------------------------------------------------------------------------------- NARAC ASSESSMENTS OF THE PLUTONIUM FINISHING PLANT (PFP) AT THE HANFORD SITE NEAR RICHLAND, WASHINGTON (2017) 1. 2. Previous Next -------------------------------------------------------------------------------- NARAC RESPONSE TO THE FUKUSHIMA DAI-ICHI NUCLEAR POWER PLANT ACCIDENT (2011) 1. 2. 3. 4. NARAC provided daily weather and plume forecasting to support mission planning and provide situational awareness for U.S. personnel deployed to Japan DOE/NARAC provided predictions of possible arrival times and dose in U.S. Territories (particle animation shows the complexity of trans-Pacific dispersion) Rapidly changing meteorological conditions presented a significant modeling challenge (particle animation shows changing meteorology over March 14-March 16 UTC) NARAC conducted source estimation and model refinement based on available field data to predict the total external dose rate including the combined effects of airborne and ground contamination Previous Next Lawrence Livermore National Laboratory | 7000 East Avenue • Livermore, CA 94550 | LLNL-WEB-681066 Operated by the Lawrence Livermore National Security, LLC for the Department of Energy's National Nuclear Security Administration Learn about the Department of Energy's Vulnerability Disclosure Program Home Disclaimer Privacy Notice Close menu