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NESC0265 RSAC

RSAC, Gamma Doses, Inhalation and Ingestion Doses, Fission Products Inventory after Fission Products Release

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1. NAME OR DESIGNATION OF PROGRAM:  RSAC
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2. COMPUTERS
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Program name Package id Status Status date
RSAC NESC0265/02 Tested 01-APR-1975

Machines used:

Package ID Orig. computer Test computer
NESC0265/02 IBM 370 series IBM 370 series
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3. DESCRIPTION OF PROBLEM OR FUNCTION

RSAC generates a fission product inventory from a given set of reactor operating conditions and then computes the external gamma dose, the deposition gamma dose, and the inhalation-ingestion dose to critical body organs as a result of exposure to these fission products. Program output includes reactor operating history, fission product inventory, dosages, and ingestion parameters.
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4. METHOD OF SOLUTION

The fission product inventory generated by the  reactor operating conditions and the inventory remaining at various  times after release are computed using the equations of W. Rubinson  in Journal of Chemical Physics, Vol. 17, pages 542-547, June 1949. The external gamma dose and the deposition gamma dose are calculated by determining disintegration rates as a function of space and time, then integrating using Hermite's numerical techniques for the spatial dependence. The inhalation-ingestion dose is determined by the type and quantity of activity inhaled and the biological rate of decay following inhalation. These quantities are integrated with respect to time to obtain the dosage. The ingestion dose is related  to the inhalation dose by an input constant.
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5. RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM:
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6. TYPICAL RUNNING TIME

About 6 minutes are required to run both sample problems.
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7. UNUSUAL FEATURES OF THE PROGRAM:
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8. RELATED AND AUXILIARY PROGRAMS:
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9. STATUS
Package ID Status date Status
NESC0265/02 01-APR-1975 Tested at NEADB
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10. REFERENCES:
NESC0265/02, included references:
- R.L. Coates and N.R. Horton:
  RSAC - A Radiological Safety Analysis Computer Program
  IDO-17151 (May 1966).
- L.C. Richardson:
  Users Manual for FORTRAN Version of RSAC, A Radiological Safety
  Analysis Computer Program
  IDO-17261 (June 1968).
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11. MACHINE REQUIREMENTS:  150K bytes and 1 tape drive.
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12. PROGRAMMING LANGUAGE(S) USED
Package ID Computer language
NESC0265/02 FORTRAN-IV
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13. OPERATING SYSTEM UNDER WHICH PROGRAM IS EXECUTED:   OS/360.
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14. OTHER PROGRAMMING OR OPERATING INFORMATION OR RESTRICTIONS

Subroutines CVI, DATE, and TIMSET, and function SL are written in Assembly language.
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15. NAME AND ESTABLISHMENT OF AUTHOR

                 L. C. Richardson
                 EG&G Idaho, Inc.
                 P. O. Box 1625
                 Idaho Falls, Idaho  83401
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16. MATERIAL AVAILABLE
NESC0265/02
File name File description Records
NESC0265_02.001 SOURCE PROGRAM EBCDIC (F4) 2375
NESC0265_02.002 ENVIRONMENTAL SUBROUTINES(EBCDIC,ASSEMBLER) 679
NESC0265_02.003 JCL 27
NESC0265_02.004 OVERLAY CARDS 17
NESC0265_02.005 SAMPLE PROBLEM 1 INPUT DATA 928
NESC0265_02.006 SAMPLE PROBLEM 2 INPUT DATA 37
NESC0265_02.007 SAMPLE PROBLEM 1 PRINTED OUTPUT 1005
NESC0265_02.008 SAMPLE PROBLEM 2 PRINTED OUTPUT 993
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17. CATEGORIES
  • G. Radiological Safety, Hazard and Accident Analysis

Keywords: dose rates, earth atmosphere, fission products, radioactivity.