last modified: 24-JUL-1996 | catalog | categories | new | search |

CCC-0631 LWRARC-1.0.

LWRARC, PWR and BWR Spent Fuel Decay Heat Generator

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1. NAME OR DESIGNATION OF PROGRAM:  LWRARC-1.0.
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2. COMPUTERS
To submit a request, click below on the link of the version you wish to order. Only liaison officers are authorised to submit online requests. Rules for requesters are available here.
Program name Package id Status Status date
LWRARC-1.0 CCC-0631/01 Tested 24-JUL-1996

Machines used:

Package ID Orig. computer Test computer
CCC-0631/01 IBM PC PC Pentium 100
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3. DESCRIPTION OF PROGRAM OR FUNCTION

LWRARC calculates spent fuel decay heat generation rates for standard pressurized water reactor (PWR) and boiling water reactor (BWR) fuel assembly designs for cooling times between 1 and 110 years.
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4. METHOD OF SOLUTION

LWRARC provides an interactive menu-driven user interface to perform automated interpolations and adjustments of a data base of decay heat generation rates produced by the SAS2H analysis sequence of the SCALE-4 system. Using generic PWR and BWR assembly models, SAS2H calculations were performed with each model for six different burnups at each of three separate specific powers  to produce heat rates at 20 cooling times in the range of 1 to 100 years. LWRARC uses a procedure that includes proper interpolation formulae for the tabulated heat generation rates. Adjustment formulae for the interpolated values are provided to account for differences in initial 235U enrichment and changes in the specific power of a cycle from the average value. Finally, safety factor formulae derived as a function of burnup, cooling time, and type of  reactor are added.
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5. RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM

Limitations include  cooling times of 1 to 100 years, maximum burnups of 45 MWd/kgU for BWRs and 50 MWd/kgU for PWR's. Additional limitations and restrictions in the method are discussed in detail in the documentation accompanying the software. The code itself automatically performs checks on input data to ensure that these limits are not exceeded.
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6. TYPICAL RUNNING TIME

Typical running times are less than one minute on an 80386 PC.
CCC-0631/01
The program LWRARC was executed at the NEA-DB on a PC DELL Pentium processor of 99 MHz, under MS-DOS 6.2. A few tenths of  a second are required to run the sample problems. The program LWRARC is menu driven and runs interactively.
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7. UNUSUAL FEATURES OF THE PROGRAM:
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8. RELATED AND AUXILIARY PROGRAMS:
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9. STATUS
Package ID Status date Status
CCC-0631/01 24-JUL-1996 Tested at NEADB
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10. REFERENCES:
CCC-0631/01, included references:
- O.W.Hermann et al.:
  Technical Support for a Proposed Decay Heat Guide Using
  SAS2H/ORIGEN-S Data
  NUREG/CR-5625 (ORNL-6698) (July 1994)
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11. MACHINE REQUIREMENTS:  Runs on an IBM XT, AT, 80386 or greater PC.
CCC-0631/01
The program LWRARC was executed on a PC DELL Optiplex GXM 5100, with a Pentium processor of 99 MHz, base memory 640 Kbyte  and extended memory 16 MByte. The diskspace occupied by the package  files amounts to about 300 Kbyte. The filesize of the LWRARC executable file is 179 Kbyte.
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12. PROGRAMMING LANGUAGE(S) USED
Package ID Computer language
CCC-0631/01 BASIC
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13. OPERATING SYSTEM UNDER WHICH PROGRAM IS EXECUTED:
CCC-0631/01
Under DOS 6.2 the Microsoft BASIC PDS 7.1 compiler/ linker was used to compile the BASIC source files and link them with proprietary BASIC and Assembler routines from Crescent Software's QuickPak Professional and QuickScreen libraries to create the executable included in the package. The BASIC source files are included. However, the Crescent Software routines are not distributed since they are proprietary.
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14. OTHER PROGRAMMING OR OPERATING INFORMATION OR RESTRICTIONS:
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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.
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16. MATERIAL AVAILABLE
CCC-0631/01
File name File description Records
CCC0631_01.001 Information package of file LWRARC-1.0 171
CCC0631_01.002 BASIC language source code file # 1 863
CCC0631_01.003 BASIC language source code file # 2 1479
CCC0631_01.004 BASIC language source code file # 3 199
CCC0631_01.005 Executable of program LWRARC 0
CCC0631_01.006 Aux. binary file (.FRM) # 1 0
CCC0631_01.007 Aux. binary file (.FRM) # 2 0
CCC0631_01.008 Aux. binary file (.FRM) # 3 0
CCC0631_01.009 Aux. binary file (.FRM) # 4 0
CCC0631_01.010 Aux. binary file (.BSV) # 1 0
CCC0631_01.011 Aux. binary file (.BSV) # 2 0
CCC0631_01.012 Aux. binary file (.BSV) # 3 0
CCC0631_01.013 Aux. binary file (.QSL) # 1 0
CCC0631_01.014 Sample input file (binary) 0
CCC0631_01.015 Sample output file 291
CCC0631_01.016 Auxiliary file 3
CCC0631_01.017 DOS file-names 15
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17. CATEGORIES
  • D. Depletion, Fuel Management, Cost Analysis, and Power Plant Economics

Keywords: BWR reactors, burnup, decay heat, pwr reactors.