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CCC-0273 DACRIN.

DACRIN, Dose in Respiratory Tract and Organs from Aerosol Inhalation

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1. NAME OR DESIGNATION OF PROGRAM:  DACRIN.
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2. COMPUTERS
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Program name Package id Status Status date
DACRIN CCC-0273/01 Tested 19-SEP-1983

Machines used:

Package ID Orig. computer Test computer
CCC-0273/01 UNIVAC 1100 UNIVAC 1100
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3. DESCRIPTION OF PROBLEM OR FUNCTION

DACRIN is designed to provide rapid and consistent estimates of the effective radiation dose to the human respiratory tract and other organs resulting from the inhalation of radioactive aerosols. The program will calculate the effective radiation dose to any of 18 organs and tissues from inhalation of any one or a combination of radionuclides considered by the International Commission on Radiological Protection (ICRP). Input to the program consists of a few program control variables, the duration of inhalation exposure, ventilation rate, the time interval within which the dose is delivered, the organs of interest, the quantity of the radionuclide inhaled, its solubility class and particle size, and, when an atmospheric dispersion model is invoked, the additional parameters required for the model selected. Output provided by DACRIN consists of the effective radiation dose to the specified organs at selected time intervals for each radionuclide inhaled as indicated by the input data.
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4. METHOD OF SOLUTION

The program is an outgrowth of the development  of a mathematical model for the organ dose following the basic precepts of the ICRP Task Group on Lung Dynamics, and a simple exponential model for retention by a organ of interest. As an adjunct to the organ dose model, mathematical models describing atmospheric dispersion have been included to evaluate doses from either accidental or chronic atmospheric releases of radionuclides.
The model divides the respiratory tract into three regions, the nasopharyngeal, the tracheobronchial, and the pulmonary. Deposition  is assumed to vary with the aerodynamic properties of the aerosol distribution. Atmospheric dispersion is described by a bivariate normal distribution model incorporated in the code; however, normalized air concentrations at specific distances as calculated by any other atmospheric dispersion model can be used as input.
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5. RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM

Maxima of -
   10 downwind distances at which dose is calculates
   10 organs
   10 time intervals measured from the most recent intake
    5 multiple intake intervals
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6. TYPICAL RUNNING TIME

NESC compiled the DACRIN source and executed  the sample problem in 100 seconds of CP time on a UNIVAC1100/44.
NEA-DB executed the test case on UNIVAC 1100 in 20 CPU seconds.
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7. UNUSUAL FEATURES OF THE PROGRAM:
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8. RELATED AND AUXILIARY PROGRAMS

Other programs which calculate organ dose include: SUBDOSA (NESC Abstract 924), which calculates external doses from atmospheric releases of radionuclides, AERIN (NESC Abstract 908), which calculates organ and tissue burdens resulting from acute exposure to a radioactive aerosol, and ARRRG,FOOD (NESC Abstract 925) and PABLM (NESC Abstract 926), which  calculate radiation doses to humans from radionuclides in the environment.
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9. STATUS
Package ID Status date Status
CCC-0273/01 19-SEP-1983 Tested at NEADB
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10. REFERENCES

- J.R. Houston, D.L. Strenge, and E.C. Watson,
  DACRIN, NESC No. 923.1100, DACRIN Tape Description and Errata to
BNWL-B-389, National Energy Software Center Note 81-80, August 28,    1981.
CCC-0273/01, included references:
- J.R. Houston, D.L. Strenge and E.C. Watson:
  DACRIN - A Computer Program for Calculation Organ Dose from
  Chronic Radionuclide Inhalation. BNWL-B-389 (UC-41) Reissued
  (April 1976) + Errata (December 1977).
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11. MACHINE REQUIREMENTS

56,000 words of memory are needed to execute  the program.
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12. PROGRAMMING LANGUAGE(S) USED
Package ID Computer language
CCC-0273/01 FORTRAN-IV
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13. OPERATING SYSTEM UNDER WHICH PROGRAM IS EXECUTED:  EXEC 8.
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14. OTHER PROGRAMMING OR OPERATING INFORMATION OR RESTRICTIONS

This
program should be compiled with the ASCII FORTRAN (FTN) compiler.
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15. NAME AND ESTABLISHMENT OF AUTHOR

             J.R. Houston, D.L. Strenge*, and E.C. Watson
             Ecological Sciences Department
             Pacific Northwest Laboratories
             Battelle
             P.O. Box 999
             Richland, Washington 99352
* Contact
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16. MATERIAL AVAILABLE
CCC-0273/01
File name File description Records
CCC0273_01.003 DACRIN INFORMATION FILE 54
CCC0273_01.004 DACRIN SOURCE CARD IMAGES (FORTRAN-4) 2098
CCC0273_01.005 DACRIN JCL FOR TEST CASE EXECUTION 12
CCC0273_01.006 DACRIN INPUT DATA FOR TEST CASE 56
CCC0273_01.007 RMDLIB LIBRARY (FORMATTED, UNIT 10) 286
CCC0273_01.008 ORGLIB LIBRARY (FORMATTED, UNIT 11) 1994
CCC0273_01.009 DACRIN OUTPUT OF TEST CASE 2734
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17. CATEGORIES
  • R. Environmental and Earth Sciences

Keywords: dose rates, inhalation, radiation doses, radioactive aerosols, respiratory system.