Explosive Release Atmospheric Dispersal 3.2

Software · Tue Jun 26 00:00:00 EDT 2001

OSTI ID:1230881

ERAD (Explosive Release Atmospheric Dispersal) is a 3D numerical transport and diffusion model, used to model the consequences associated with the buoyant (or nonbuoyant) dispersal of radioactive material It incorporates an integral plume rise model to simulate the buoyant rise of heated gases following an explosive detonation. treating buoyancy effects from time zero onward, eliminating the need for the stabilized doud assumption, and enabling the penetration of inversions. Modeling of the atmospheric boundary layer uses contemporary parameterization based on scaling theories derived from observational, laboratory and numerical studies. A Monte Carlo stochastic process simulates particle dispersion. Results were validated for both dose and deposition against measurements taken during Operation Roller Coaster (a joint US-UK test performed at NTS). Meteorology is defined using a single vertical sounding containing wind speed and direction and temperature as a function of height. Post processing applies 50-year CEDE DCFs (either ICRP 26 or 60) to determine the contribution of the relevant dose pathways (inhalation, submersion, and ground shine) as well as the total dose received. Dose and deposition contours are overlaid on a fully integrated worldwide GIS and tabulates hearth effects (fatalities and casualties) to resident population. The software runs on a laptop and takes less than 2 minutes to process. The Municipal version of ERAD does not include the ability to model the mitigation effects of aqueous foam.

• Short Name / Acronym: ERAD3.2 Municipal; 001941IBMPC00
• Site Accession Number: Version 3.2 Build 1049
• Version: 00
• Programming Language(s): Medium: X; OS: Windows 2000 or later; Compatibility: PC
• Research Organization: Sandia National Laboratories (SNL), Albuquerque, NM, and Livermore, CA (United States)
• Sponsoring Organization: USDOE
• Contributing Organization: B.A. Bougthon, J.M. DeLaurents, K.F. Eckerman, R.W. Leggett, K. Alt, I. Kaplan, M. Dowell
• DOE Contract Number: DE-AC04-94AL85000
• OSTI ID: 1230881
• Country of Origin: United States