RSICC CODE PACKAGE CCC-664
1. NAME AND TITLE
ARCON96: Code System to Calculate Atmospheric Relative Concentrations
in Building Wakes.
Pacific Northwest National Laboratory, Richland, Washington through
the Energy Science and Technology Software Center, Oak Ridge, Tennessee
3. CODING LANGUAGE AND COMPUTER
Fortran, VisualBasic; IBM PC (C00664IBMPC00).
4. NATURE OF PROBLEM SOLVED
ARCON96 was developed to calculate relative concentrations in plumes
from nuclear power plants at control room air intakes in the vicinity of
the release point.
5. METHOD OF SOLUTION
ARCON96 implements a straight-line Gaussian dispersion model with dispersion
coefficients that are modified to account for low wind meander and building
wake effects. Hourly, normalized concentrations (X/Q) are calculated from
hourly meteorological data. The hourly values are averaged to form X/Qs
for periods ranging from 2 to 720 hours in duration. The calculated values
for each period are used to form cumulative frequency distributions.
6. RESTRICTIONS OR LIMITATIONS
ARCON96 is a single user program. If expanded output is selected by
the user, the file includes the hourly input and X/Qs and the intermediate
computational results. The output file may exceed a megabyte in size.
7. TYPICAL RUNNING TIME
ARCON96 calculates normalized concentrations using hourly meteorological
data. Program progress is displayed during calculations. With 100+MHz computers,
five years of hourly data can be processed in about one minute..
8. COMPUTER HARDWARE REQUIREMENTS
ARCON96 is designed for computers using a 80386 or higher processor,
640 kilobytes of memory with 470 kilobytes of free at run time, and a VGA
9. COMPUTER SOFTWARE REQUIREMENTS
MSDOS 5.1 or higher programs will also run in DOS window in Windows
3.1, Windows95, and Windows98. The user interface is written in VisualBasic
for DOS. The program is written in FORTRAN and compiled with MicroSoft
PowerStation Fortran. When using the CMD.EXD DOS window under the Windows
2000 operating system, the ARCON96 program displays only a part of the
ARCON screen. However the full-screen command.com DOS window displays the
entire screen and allows one to run ARCON96 under Windows2000.
J. V. Ramsdell, Jr., and C. A. Simonen, "Atmospheric Relative Concentrations
in Building Wakes," NUREG/CR-6331, Rev.1; PNNL-10521, Rev. 1 (May 1997).
11. CONTENTS OF CODE PACKAGE
Included in the package are the referenced document and one DS/HD diskette
which contains a self-extracting, compressed DOS file. The Fortran source
files, information files, a batch file to run the code, executables, and
input/output files are all included. However, the Visual Basic source files
are not included.
12. DATE OF ABSTRACT
January 1999, revised May 2002.
KEYWORDS: AIRBORNE; CONTROL ROOM HABITABILITY; GAUSSIAN PLUME MODEL; ENVIRONMENTAL DOSE; NUCLIDE TRANSPORT