CCC-0542: CAP-88, Dose Risk Assessment from Air Emissions of Radionuclides

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CCC-0542 CAP-88. (Abstract last modified 22-MAR-1994)

CAP-88, Dose Risk Assessment from Air Emissions of Radionuclides

Abstract Table of Contents:

1. NAME OR DESIGNATION OF PROGRAM - CAP-88 (Clean Air Act Assessment
Package)

2. COMPUTER FOR WHICH PROGRAM IS DESIGNED AND OTHER MACHINE VERSION PACKAGES AVAILABLE -

To request or retrieve programs click on the one of the active versions below. A password and special authorization is required.

Explanation of the status codes.

Program-name Package-ID Status CAP-88 CCC-0542/01 Tested CAP88-PC CCC-0542/02 Tested

Machines used: Package-ID Orig.Computer Test Computer CCC-0542/01 DEC VAX 6000 DEC VAX 6000 CCC-0542/02 IBM PC PC-80486

3. DESCRIPTION OF PROGRAM OR FUNCTION - The Clean Air Act Assessment Package-1988 (CAP-88) is designed for assessment of dose and risk from radionuclide emissions to air in compliance with National Emission Standards for Hazardous Air Pollutants (NESHAPs) for Radionuclides. CAP-88 estimates health impacts from the inhalation, ingestion, air immersion and ground surface irradiation pathways, and tabulates results for maximally exposed individuals and regional populations out to 80 kilometers. The system provides risk information in a concise, easy-to-read format and prints an echo of the input.
CAP-88 consists of updated versions of the mainframe codes AIRDOS-EPA and DARTAB. Atmospheric dispersion and deposition are calculated by AIRDOS2. Dose and risk assessment tables are calculated by DARTAB2 from the binary output file produced by AIRDOS2 and a file of dose and risk factors calculated by RADRISK. Preprocessors (PREPAR2 and PREDA) for AIRDOS2 and DARTAB2 access data bases of element and nuclide dependent data to simplify the execution of the principal programs.

4. METHOD OF SOLUTION - AIRDOS-EPA implements a long term average Gaussian Plume model. The associated terrestrial model for deposition is based on NRC Regulatory Guide 1.109. The 50-year effective dose equivalent factors for DARTAB2 are calculated by RADRISK and use weighting factors from ICRP-26. Risks are calculated using a linear Life Table model consistent with BEIR-3. The resultant risk factors are 4.0E-4 cancer deaths per rem and 3.6E-4 cancer deaths per person working-level-month exposure to radon decay products.
CAP88-PC (CCC-0542/02) is able to use population data and weather data downloaded from mainframe versions of CAP-88. CAP88-PC also comes with sample population arrays from some DOE facilities, and includes weather data from many DOE sites and major U.S. cities.

5. RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM - Programs are limited to 36 radionuclides and to 20 downwind distances for each of 16 compass directions. CAP88-PC is intended for use by health physicists experienced in dose assessment. CAP88-PC is based on the Gaussian plume model with its associated limitations. The model is intended only for evaluating low-level, chronic releases; it is not appropriate for short-term accidental releases.

6. TYPICAL RUNNING TIME - A complete run, including PREPAR2, AIRDOS2, PREDA, and DARTAB2, for an individual and population assessment requires approximately one and two minutes of CPU time, respectively, on an IBM 3090 processor. The same problem on a PC/80286 (12 MHz) took about 25 minutes.

CCC-0542/01:

NEA-DB compiled and executed the test cases included in this package on DEC VAX 6000-510 computer. Charged execution times for the different modules were as follows (in seconds):
RUNCAP88 - 29; PREPAR2 - 2.5; AIRDOS2 - 15; PREDA - 3; DARTAB2 - 10; RADFMT - 18.

CCC-0542/02:

The assessment for the default dataset "REACTIVE METALS" was performed at the NEA-DB in about 20 seconds (elapsed time) on a 66-MHz PC/80486.

7. UNUSUAL FEATURES OF THE PROGRAM -

8. RELATED AND AUXILIARY PROGRAMS - CAP-88 is an updated version of the CCC-476/CAAC package, which implemented radiological assessment methodology used for the preparation of the Environmental Protection Agency 1984 Background Information Documents on Radionuclides.

CCC-0542/01:

PREPAR2             AIRDOS-EPA input generator
AIRDOS2             Radiation dose estimation by airborne
                    radionuclides around reactors
PREDA               DARTAB input generator
DARTAB2             Combines radionuclide exposure data with
                    dosimetry and health effects data
RADFMT              Binary conversion of RADRISK data file for
                    DARTAB2

9. STATUS
CCC-0542/01: 01-DEC-1993 Tested at NEADB
CCC-0542/02: 22-MAR-1994 Tested at NEADB

10. REFERENCES  -
- Risk Assessments Methodology: Environmental Impact Statement,
NESHAPS for Radionuclides, Background Information Document; Vol. 1 EPA 520/1-89-005 (Sept. 1989)
- C.L. Begovich, K.F. Eckerman, E.C. Schlatter, S.Y. Ohr,
R.O.Chester
DARTAB: A Program to Combine Airborne Radionuclide Environmental
Exposure Data with Dosimetric and Health Effects Data to Generate
Tabulations of Predicted Health Impcats; ORNL-5692 (August 1981)
- R.E. Moore, C.F. Baes III, L.M. McDowell-Boyer, A.P. Watson,
F.O. Hoffman, J.E. Pleasant, and C.W. Miller
AIRDOS-EPA: A Computerized Methodology for Estimating
Environmental Concentrations and Dose to Man from Airborne
Releases of Radionuclides; ORNL-5532 (June 1979)
- Andrea L. Sjoreen and Charles W. Miller
PREPAR: A User-Friendly Preprocessor to Create AIRDOS-EPA Input
Data Sets; ORNL-5952 (August 1984)
CCC-0542/01:
- Barry Parks:
  CAP-88 - Important Differences with Earlier Version of AIRDOS-EPA
  Informal Notes (September 1990).
- Deborah Beres (Editor):
  The Clean Air Act Assessmnet Package - 1988 (CAP-88): A Dose and
  Risk Assessment Methodology for Radionuclide Emissions to Air
  Vol. 1 User's Manual (October 1990).
- Deborah Beres (Editor):
  The Clean Air Act Assessmnet Package - 1988 (CAP-88): A Dose and
  Risk Assessment Methodology for Radionuclide Emissions to Air
  Vol. 2 Appendix L (October 1990).
- Herbert J. Berstein:
  Transmittal Letter and New AIRDOS Installation
  Memo 7 and 8 (May/June 1990).
CCC-0542/02:
- Barry Parks:
  User's Guide for CAP88-PC
  402-B-92-001 (March 1992).
- Barry Parks:
  Informal Notes on CAP-88-PC
  (April 1992).

11. MACHINE REQUIREMENTS - CAP-88 is operable on the IBM mainframe computers. Memory regions for execution on an IBM 3090 system under MVS are as follows: PREPAR2, 1200K; AIRDOS2, 900K; PREDA, 300K; and DARTAB2, 800K. Version B was tested on a VAX 6000. CAP88-PC requires a MS-DOS compatible personal computer with a hard disk with at least 3.5 MB of free space, 500K free RAM and a math co-processor.

CCC-0542/01:

NEA-DB implemented the package on a DEC VAX 6000-510 computer.

CCC-0542/02:

The default dataset was run at the NEA-DB on a PC DELL 466/L (80486 processor, 66 MHz, 16 Mbytes RAM). The file sizes of the executable versions are 66 Kbytes (CAP88PC.EXE); 60 Kbytes (DEFAULT.EXE), 370 Kbytes (DARTAB.EXE); 408 Kbytes (AIRDOS.EXE); 83 Kbytes (INTRO.EXE).

12. PROGRAMMING LANGUAGE(S) USED -
CCC-0542/01: FORTRAN-77
CCC-0542/02: FORTRAN+C

13. OPERATING SYSTEM UNDER WHICH PROGRAM IS EXECUTED - The IBM system compiled under OS/VS2 using the IBM VS compiler. The VAX version was tested using the VMS 5.4 FORTRAN compiler.
To run CAP88-PC, Turbo C++ Version 1.0 and Lahey F77L Version 4.10 were used to create the executables.

CCC-0542/01:

NEA-DB implemented the package under VMS 5.5-2. The source programs were compiled with the DEC VAX FORTRAN-77 compiler.

CCC-0542/02:

The program was run under MS-DOS 6.0. The FORTRAN77 Lahey compiler F77L-EM/72 version 5.11 and the linker 386LINK were used to recreate the executable versions DEFAULT.EXE, DARTAB.EXE and AIRDOS.EXE.

14. OTHER PROGRAMMING OR OPERATING INFORMATION OR RESTRICTIONS -

15. NAME AND ESTABLISHMENT OF AUTHORS -
Contributed by: Radiation Shielding Information Center
   Oak Ridge National Laboratory
   Oak Ridge, Tennessee, U.S.A.
Developed by:
   EPA Office of Radiation Programs,  Las Vegas, Nevada, U.S.A.
   under the joint sponsorship of the  EPA Office of Radiation
   Programs and the DOE Office of Environmental Guidance.
   Brookhaven National Laboratory, Upton, LI, New York, U.S.A.

17. CATEGORIES -

- G. Radiological Safety, Hazard and Accident Analysis

Keywords: AIR POLLUTION, ATMOSPHERIC PRECIPITATIONS, DISPERSIONS, HEALTH HAZARDS, INGESTION, INHALATION, RADIATION DOSES, RADIOACTIVE CLOUDS, RADIOACTIVITY TRANSPORT, RADIONUCLIDE MIGRATION