PREPAR: a user-friendly preprocessor to create AIRDOS-EPA input data sets

PREPAR is a FORTRAN program designed to simplify the preparation of the input file for the AIRDOS-EPA computer code. PREPAR was designed to provide a method for data entry that is both logical and flexible. It also provides default values for all variables, so the user needs only to enter that data for which the defaults should be changed. Most scalar data values are read using NAMELIST input. For entering arrays the user can choose among list-directed, user-selected formatted, or default-formatted input. A separate file of the nuclide-specific default data needed by AIRDOS-EPA is read by PREPAR. Two utility programs, EXTRAC and RADLST, were written to create and list the input radionuclide file for PREPAR. PREPAR writes a data file in the format needed to run AIRDOS-EPA and writes a report of those data values. The data report includes warning messages for any apparent mistakes or inconsistencies in the data entered by the user. This report is an instruction manual for using PREPAR and a documentation of the calculations and the default data values in PREPAR. A glossary of the PREPAR variables, the program listing, sample input, and sample output are included in the appendices. The two utility programs, EXTRACmore » and RADLST, are also documented in this report.« less