1. NAME AND TITLE
IRDAM: Interactive Rapid Dose Assessment Model.
Battelle Pacific Northwest Laboratory, Richland, Washington.
3. CODING LANGUAGE AND COMPUTER
BASIC; IBM PC/XT/AT.
4. NATURE OF PROBLEM SOLVED
IRDAM is a micro-computer based program for rapidly assessing the radiological impact of an accident at a nuclear power plant. The code packaged October 1988 is Version 3.
5. METHOD OF SOLUTION
IRDAM can handle a variety of accidental release scenarios. Information on meteorological conditions, source term mixtures, and time periods for decay and plume passage are all incorporated in the calculations. The activity or quantity of the release can be identified in several ways. Both elevated and ground-level releases can be accommodated. Dose equivalents are calculated for the whole body (5-cm depth) and thyroid (infant) at six fixed downwind distances between 500 and 20,000 meters.
The IRDAM system is highly interactive and assumes that an operator has expertise in radiation protection, but has little or no computer experience. By answering questions posed by IRDAM, an operator is guided through the input requirements of the calculations. The model has site- specific information and pre-programmed defaults that will enable the operator to make radiological dose estimates with a minimum of information.
6. RESTRICTIONS OR LIMITATIONS
7. TYPICAL RUNNING TIME
The scenarios execute in seconds.
8. COMPUTER HARDWARE REQUIREMENTS
The code was originally written for an Osborne computer using GW-Basic. However, the code runs on a variety of personal computers, including H-P and IBM PC/XT/AT computers.
9. COMPUTER SOFTWARE REQUIREMENTS
The code was tested with the IBM BASICA interpreter by RSIC.
G. F. Martin Transmittal Letter, Battelle Pacific Northwest Laboratories, Richland, Washington (August 3, 1987).
R. W. Poeton, M. P. Moeller, G. J. Laughlin, A. E. Desrosiers, Interactive Rapid Dose Assessment Model (IRDAM), NUREG/CR-3012, PNL 4510, Vols.1-3 (May 1983).
11. CONTENTS OF CODE PACKAGE
Included are the referenced documents and one double-sided, double-density diskette.
12. DATE OF ABSTRACT
KEYWORDS: AIRBORNE; ENVIRONMENTAL DOSE; GAUSSIAN PLUME MODEL; INTERACTIVE; MICROCOMPUTER; NUCLIDE TRANSPORT; RADIOACTIVITY RELEASE; REACTOR ACCIDENT