1.NAME OR DESIGNATION OF PROGRAM
- ORIGEN-ARP 1.00

2. COMPUTER FOR WHICH PROGRAM IS DESIGNED AND OTHER MACHINE VERSION PACKAGES AVAILABLE -

To request or retrieve programs click on the one of the active versions below.
A password and special authorization is required.

Explanation of the status codes.

Program-name      Package-ID Status
ORIGEN-ARP 1.00    CCC-0702/01 Arrived

Machines used:
Package-ID    Orig.Computer      Test Computer
CCC-0702/01   PC Pentium

2.DESCRIPTION OF PROGRAM OR FUNCTION
- ORIGEN-ARP was developed for the Nuclear Regulatory Commission and the Department of Energy to satisfy a need for an easy-to-use standardized method of isotope depletion/decay analysis for spent fuel, fissile material, and radioactive material. It can be used to solve for spent fuel characterization, isotopic inventory, radiation source terms, and decay heat.

3.METHODS
- ORIGEN-ARP is an automated sequence to perform isotopic depletion / decay calculations using the ARP and ORIGEN-S codes of the SCALE system. The sequence includes the OrigenArp for Windows graphical user interface (GUI) that prepares input for ARP (Automated Rapid Processing) and ORIGEN-S. ARP automatically interpolates cross sections for the ORIGEN-S depletion/decay analysis using enrichment, burnup, and, optionally moderator density, from a set of libraries generated with the SCALE SAS2 depletion sequence. Library sets for four LWR fuel assembly designs (BWR 8x8, PWR 14x14, 15x15, 17x17) are included. The libraries span enrichments from 1.5 to 5 wt% U-235 and burnups of 0 to 60,000 MWD/MTU. Other libraries (e.g., DLC-210) are available from RSICC. SCALE users can generate their own libraries for other fuel assembly designs. The interpolated cross sections from ARP are passed to ORIGEN-S to perform the depletion/decay calculations. The ORIGEN-ARP sequence includes the post-processing utility module OPUS to generate ASCII plot data files and the PlotOPUS Windows GUI to plot the data.
ORIGEN-S uses the matrix exponential method to solve a large system of coupled, linear, first-order ordinary differential equations with constant coefficients. This method is supplemented by a generalized form of the Bateman equations for the concentrations of short-lived nuclides.

4.RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM
- Modeling assumptions that limit or restrict the usefulness or accuracy of ORIGEN-S are discussed in the documentation.

5.TYPICAL RUNNING TIME
- Running times are typically less than 15 seconds on a Pentium II PC or later.

6.UNUSUAL FEATURES
- This initial release of ORIGEN-ARP is a standalone code package that contains an updated version of the SCALE-4.4a ORIGEN-S code. It contains a subset of the modules, data libraries, and miscellaneous utilities in SCALE-4.4a. This package is intended for users who do not need the entire SCALE package.

7.RELATED OR AUXILIARY PROGRAMS-

9. STATUS
CCC-0702/01: 22-NOV-2001 Masterfiled Arrived

10. REFERENCES -
CCC-0702/01:
- S. Bowman:
"README for ORIGEN-ARP" (README.PDF, July 2001).
- I. Gauld, D. L. Barnett, O. W. Hermann, and S. M. Bowman:
"OPUS/PlotOPUS: An ORIGEN-S Post-Processing Utility and Plotting Program for
SCALE"
NUREG/CR-6718, ORNL/TM-2001/26 (April 2001).
- ORIGEN-ARP, ORIGEN-S and ORIGEN Library sections of the SCALE4.4a (CCC-545)
report
NUREG/CR-0200, Rev. 6 (ORNL/NUREG/CSD-2/R6), Vols. I, II, and III (March 2000)

11. HARDWARE REQUIREMENTS
- ORIGEN-ARP runs on Pentium personal computers with a minimum of 32 MB RAM. Nominal hard disk requirements are less than 50 MB for a complete installation, including space for running sample problems. SCALE runs on Windows 95/NT or later platforms.

12. PROGRAMMING LANGUAGE
-CCC-0702/01: FORTRAN-90

13. SOFTWARE REQUIREMENTS
- This system runs on Windows 95/NT or later. Fortran executables included in the package were created using the Lahey F90 Fortran compiler version 4.00e in a DOS window of Windows 2000. Makefiles, source files, and batch files are also included in the package.
The OrigenArp GUI was created using Microsoft Visual C++, and PlotOPUS was created with Microsoft Visual Basic and GigaSoft ProEssentials.

14. OTHER PROGRAMMING OR OPERATING INFORMATION OR RESTRICTIONS -

15. NAME AND ESTABLISHMENT OF AUTHORS -
Contributed by:
         Radiation Safety Information Computational Center
         Oak Ridge National Laboratory
         Oak Ridge, Tennessee, U. S. A.
Developed by: Oak Ridge National Laboratory, Oak Ridge,
         Tennessee, U.S.A.

16. MATERIAL AVAILABLE
-CCC-0702/01:
CopyReadMe.BAT Batch file
fixdrive.exe executable file
InstallOrigenArp.exe executable file
Install_Origen_Arp.chm
linksnt.exe executable file
linkswindows.exe executable file
mfc42.dll
origen-arp_manuals.exe executable file
OrigenArp1.00.exe executable file
pfe101i.exe executable file
PlotOPUS1.00.exe executable file
Readme.pdf Installation instructions
rp500enu.exe executable file
scale_origen-arp.exe executable file

17. CATEGORIES -

Keywords: DECAY, DEPLETION, FISSION PRODUCTS, GAMMA RAY, INVENTORIES, NEUTRON