1. NAME AND TITLE

RRR: Radiation Transport in AirAnalysis of Routine Releases of Short-Lived Radioactive Nuclides.

2. CONTRIBUTOR

Oak Ridge National Laboratory, Oak Ridge, Tennessee.

3. CODING LANGUAGE AND COMPUTER

FORTRAN IV; IBM 360/91.

4. NATURE OF PROBLEM SOLVED

RRR calculates average annual ground level air concentrations, deposition rates, and ground concentrations for a decaying chain of radioactive nuclides. Members of this chain are assumed to have been emitted from a stack under routine nonaccidental operating conditions. Averages are performed relative to atmospheric stabilities, wind speeds, and wind directions. RRR predicts the transport of radioactive materials. Results will be annual averages relative to atmospheric stabilities, wind speeds, and wind directions.

5. METHOD OF SOLUTION

Numeric integration techniques are used.

6. RESTRICTIONS OR LIMITATIONS

None noted.

7. TYPICAL RUNNING TIME

The sample problem ran in 1.32 minutes on the IBM 360/91 computer.

8. COMPUTER HARDWARE REQUIREMENTS

The code is operable on the IBM 360/370 computers. It uses standard I-O and has 162K region size in the GO step.

9. COMPUTER SOFTWARE REQUIREMENTS

A FORTRAN IV compiler is required.

10. REFERENCE

M. Reeves, P. G. Fowler, and K. E. Cowser, "A Computer Code for Analyzing Routine Atmospheric Releases of Short-Lived Radioactive Nuclides," ORNL-TM-3613 (October 1972).

11. CONTENTS OF CODE PACKAGE

Included are the referenced document and one (1.2MB) DOS diskette containing the source program and sample problem input and output.

12. DATE OF ABSTRACT

August 1975.