1. NAME AND TITLE

KRONIC: Calculation of Annual Average External (Beta and Gamma Radiation) Doses from Chronic Atmospheric Releases of Radionuclides.

2. CONTRIBUTORS

Battelle Pacific Northwest Laboratories, Richland, Washington.

Ralph M. Parsons Company, Pasadena, California.

3. CODING LANGUAGE AND COMPUTER

FORTRAN IV; UNIVAC 1108 (A) and CDC CYBER-74 (B).

4. NATURE OF PROBLEM SOLVED

KRONIC calculates the annual average beta- and gamma-ray doses resulting from chronic release of radionuclides to the atmosphere. The dose calculations are performed for each sector about the release point and use frequency of occurrence data for atmospheric stability and wind speed.

5. METHOD OF SOLUTION

The infinite medium model is used for beta rays and kernel integration for gamma rays.

6. RESTRICTIONS OR LIMITATIONS

None noted.

7. TYPICAL RUNNING TIME

No study has been made by RSIC of typical running times for KRONIC.

8. COMPUTER HARDWARE REQUIREMENTS

KRONIC is operable on the UNIVAC 1108 (A) or the CDC CYBER-74 (B) computers.

9. COMPUTER SOFTWARE REQUIREMENTS

A FORTRAN IV compiler is required.

10. REFERENCE

D. L. Strenge and E. C. Watson, "KRONICA Computer Program for Calculating Annual Average External Doses from Chronic Atmospheric Releases of Radionuclides," BNWL-B-264 (June 1973).

11. CONTENTS OF CODE PACKAGE

Included are the referenced document and one (1.2MB) DOS diskette which contains the source code, data libraries, and sample problem input and output.

12. DATE OF ABSTRACT

July 1975.

KEYWORDS: ENVIRONMENTAL DOSE; RADIOLOGICAL SAFETY; KERNEL; AIRBORNE