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Title: HARAD: a computer code for calculating daughter concentrations in air following the atmospheric release of a parent radionuclide

Abstract

The HARAD computer code, written in FORTRAN IV, calculates concentrations of radioactive daughters in air following the atmospheric release of a parent radionuclide under a variety of meteorological conditions. It can be applied most profitably to the assessment of doses to man from the noble gases such as /sup 222/Rn, /sup 220/Rn, and Xe and Kr isotopes. These gases can produce significant quantities of short-lived particulate daughters in an airborne plume, which are the major contributors to dose from these chains with gaseous parent radionuclides. The simultaneous processes of radioactive decay, buildup, and environmental losses through wet and dry deposition on ground surfaces are calculated for a daughter chain in an airborne plume as it is dispersed downwind from a point of release of a parent. The code employs exact solutions of the differential equations describing the above processes over successive discrete segments of downwind distance. Average values for the dry deposition coefficients of the chain members over each of these distance segments were treated as constants in the equations. The advantage of HARAD is its short computing time.

Authors:
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
OSTI Identifier:
5475978
Report Number(s):
ORNL-5634
TRN: 80-008766
DOE Contract Number:  
W-7405-ENG-26
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
54 ENVIRONMENTAL SCIENCES; 61 RADIATION PROTECTION AND DOSIMETRY; 63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.; 99 GENERAL AND MISCELLANEOUS//MATHEMATICS, COMPUTING, AND INFORMATION SCIENCE; COMPUTER CODES; H CODES; DAUGHTER PRODUCTS; DOSIMETRY; COMPUTER CALCULATIONS; EARTH ATMOSPHERE; RADIONUCLIDE MIGRATION; HUMAN POPULATIONS; RADIATION DOSES; KRYPTON ISOTOPES; ENVIRONMENTAL TRANSPORT; RADON 220; RADON 222; XENON ISOTOPES; BUILDUP; DECAY; DEPOSITION; DIFFUSION; FISSION PRODUCT RELEASE; NUCLEAR FACILITIES; PLUMES; RADIOACTIVE AEROSOLS; AEROSOLS; ALPHA DECAY RADIOISOTOPES; COLLOIDS; DAYS LIVING RADIOISOTOPES; DISPERSIONS; DOSES; EVEN-EVEN NUCLEI; HEAVY NUCLEI; ISOTOPES; MASS TRANSFER; NUCLEI; POPULATIONS; RADIOISOTOPES; RADON ISOTOPES; SECONDS LIVING RADIOISOTOPES; SOLS; 500300* - Environment, Atmospheric- Radioactive Materials Monitoring & Transport- (-1989); 655003 - Medical Physics- Dosimetry; 560171 - Radiation Effects- Nuclide Kinetics & Toxicology- Man- (-1987); 560161 - Radionuclide Effects, Kinetics, & Toxicology- Man; 990200 - Mathematics & Computers

Citation Formats

Moore, R E. HARAD: a computer code for calculating daughter concentrations in air following the atmospheric release of a parent radionuclide. United States: N. p., 1980. Web. doi:10.2172/5475978.
Moore, R E. HARAD: a computer code for calculating daughter concentrations in air following the atmospheric release of a parent radionuclide. United States. https://doi.org/10.2172/5475978
Moore, R E. 1980. "HARAD: a computer code for calculating daughter concentrations in air following the atmospheric release of a parent radionuclide". United States. https://doi.org/10.2172/5475978. https://www.osti.gov/servlets/purl/5475978.
@article{osti_5475978,
title = {HARAD: a computer code for calculating daughter concentrations in air following the atmospheric release of a parent radionuclide},
author = {Moore, R E},
abstractNote = {The HARAD computer code, written in FORTRAN IV, calculates concentrations of radioactive daughters in air following the atmospheric release of a parent radionuclide under a variety of meteorological conditions. It can be applied most profitably to the assessment of doses to man from the noble gases such as /sup 222/Rn, /sup 220/Rn, and Xe and Kr isotopes. These gases can produce significant quantities of short-lived particulate daughters in an airborne plume, which are the major contributors to dose from these chains with gaseous parent radionuclides. The simultaneous processes of radioactive decay, buildup, and environmental losses through wet and dry deposition on ground surfaces are calculated for a daughter chain in an airborne plume as it is dispersed downwind from a point of release of a parent. The code employs exact solutions of the differential equations describing the above processes over successive discrete segments of downwind distance. Average values for the dry deposition coefficients of the chain members over each of these distance segments were treated as constants in the equations. The advantage of HARAD is its short computing time.},
doi = {10.2172/5475978},
url = {https://www.osti.gov/biblio/5475978}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Thu May 01 00:00:00 EDT 1980},
month = {Thu May 01 00:00:00 EDT 1980}
}