1. NAME AND TITLE
DACRIN: Airborne Radionuclide Organ Dose Calculational System.
RMDLIB: Isotope Data Library.
ORGLIB: Organ Data Library.
Battelle Memorial Institute, Pacific Northwest Laboratories, Richland, Washington.
3. CODING LANGUAGE AND COMPUTER
FORTRAN IV; UNIVAC 1100/44.
4. NATURE OF PROBLEM SOLVED
DACRIN incorporates the lung model proposed by the ICRP Task Group on Lung Dynamics to calculate organ doses resulting from inhalation of a radioactive aerosol. Doses are calculated as a function of distance from release point, atmospheric stability and wind speed for a specified radionuclide inventory. The duration of the uptake period and the dose time are variable.
5. METHOD OF SOLUTION
Analytic solutions to the problem have been developed. No special mathematical or numerical techniques were required.
6. RESTRICTIONS OR LIMITATIONS
Each case has the following dimensional limitations:
Number of nuclides 600
Number of organs 10
(19 organs from which to choose)
Number of downwind distances 10
Number of uptake periods 5
Number of dose times 10
Number of members in a decay chain 7
Numerical limitations include:
One positive distance must be specified.
One positive uptake time must be specified.
Dose times must be greater than 1 minute.
At least one nuclide must be specified with non-zero activity.
At least one organ must be specified.
7. TYPICAL RUNNING TIME
The running time depends mainly on the number of release periods, the number of nuclides in the inventory, the number of dose times and the number of distances. The data libraries take about 13 seconds to read (read only once per run).
8. COMPUTER HARDWARE REQUIREMENTS
The code was originally designed to run on the CYBER 74; was converted to run on the UNIVAC 1100/44 computer.
9. COMPUTER SOFTWARE REQUIREMENTS
The code requires a UNIVAC operating system and a FORTRAN IV compiler.
D. Strenge, "Informal Notes" (January 1981).
Errata, BNWL-B-389 (December 1977).
J. R. Houston, D. L. Strenge, and E. C. Watson, "DACRIN - A Computer Program for Calculating Organ Dose from Chronic Radionuclide Inhalation," BNWL-B-389 (reissued April 1976).
11. CONTENTS OF CODE PACKAGE
Included are the referenced documents and one (1.2MB) DOS diskette which contains the source code and sample problem input and output.
12. DATE OF ABSTRACT
November 1981; revised February 1982 and January 1985.
KEYWORDS: RADIONUCLIDES; INTERNAL DOSE; AIRBORNE; ENVIRONMENTAL DOSE