NAUAHYGROS - A code for calculating aerosol behavior in nuclear power plant containments following a severe accident
- Rudolph Sher Associates, Stanford, CA (United States)
- Polestar Applied Technology, Inc., Los Altos, CA (United States)
NAUAHYGROS is a computer code to calculate the behavior of fission product and other aerosol particles in the containment of a nuclear reactor following a severe accident. It is an extension of the German code NAUA, which has been in widespread use for many years. Early versions of NAUA treated various aerosol phenomena in dry atmospheres, including aerosol agglomeration, diffusion (plateout), and settling processes. Later versions added treatments of steam condensation on particles in saturated or supersaturated containment atmospheres. The importance of these condensation effects on aerosol removal rates was demonstrated in large scale simulated containment tests. The additional features incorporated in NAUAHYGROS include principally a treatment of steam condensation on hygroscopic aerosols, which can grow as a result of steam condensation even in superheated atmospheres, and improved modelling of steam condensation on the walls of the containment. The code has been validated against the LACE experiments.
- Research Organization:
- USDOE Assistant Secretary for Environment, Safety, and Health, Washington, DC (United States). Office of Environmental Guidance; Nuclear Regulatory Commission, Washington, DC (United States). Office of Nuclear Regulatory Research; International Society of Nuclear Air Treatment Technologies, Inc., Batavia, OH (United States); Harvard Univ., Boston, MA (United States). Harvard Air Cleaning Lab.
- OSTI ID:
- 95679
- Report Number(s):
- NUREG/CP--0141; CONF-940738--; ON: TI95007828
- Country of Publication:
- United States
- Language:
- English
Similar Records
Comparison of aerosol code predictions with experimental observations on the behavior of aerosols in steam
Light water reactor aerosol containment experiment LA4 simulated by JERICHO and AEROSOLS-B2 codes