1. NAME AND TITLE
RADSYS: Code System for Radioactivity Buildup and Radioactive Waste Generation Calculations.
RADSYS: Calculates flow rates in pipelines and fluid accumulations.
RADTRAN: Calculates fluid and surface concentrations at every graph node.
Institute for Electrical Power Research, Budapest, Hungary.
3. CODING LANGUAGE AND COMPUTER
Fortran IV, IBM.
4. NATURE OF PROBLEM SOLVED
The RADSYS system simulates the operation of nuclear power stations' water systems. The
RADSYS program calculates flow rates in pipelines, coolant quantities accumulating in the tanks,
regenerating and decontaminating reagent's concentrations, and the corrosion and fission product
activity of coolant surfaces. RADTRAN has been used to examine the effect of pH and high-temperature filtration on activation. The two programs may be used independently and contain certain
5. METHOD OF SOLUTION
RADSYS calculates fluid accumulation at every node and the concentration in some of them.
Using a finite difference method, concentrations are calculated for those tanks which contain
regenerating and decontaminating reagents. RADTRAN calculates fluid and surface concentrations
at every graph node using the Runge-Kutta method.
6. RESTRICTIONS OR LIMITATIONS
The limitations are subject to the dimensioning of variables in the program.
7. TYPICAL RUNNING TIME
The RADSYS program took about 15 seconds on the IBM 3033 using the RSSAMPLE sample
input. RADTRAN took 1 minute and 31 seconds on the IBM 3033 using the RADATA7 sample input.
8. COMPUTER HARDWARE REQUIREMENTS
The code was tested on the IBM 3033 computer at RSIC.
9. COMPUTER SOFTWARE REQUIREMENTS
Under the MVS operating system, RSIC used the IBM VS compiler with the language level 66
option to execute the sample cases.
G. L. Horvath, "RADSYS-RADTRAN: A Computer Code for Radioactivity Build-up and
Radioactive Waste Generation Calculations," IEPR 93.93-030-4 (September 1983).
11. CONTENTS OF CODE PACKAGE
Included are the referenced document and one (1.2MB) DOS diskette which contains the source
codes, sample input and output.
12. DATE OF ABSTRACT
KEYWORDS: NUCLIDE TRANSPORT; RADIOACTIVITY RELEASE