last modified: 14-FEB-1992 | catalog | categories | new | search |

PSR-0277 LEPRICON.

LEPRICON, PWR Vessel Dose Analysis with DORT and ANISN Program

top ]
1. NAME OR DESIGNATION OF PROGRAM:  LEPRICON.
top ]
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
LEPRICON PSR-0277/01 Tested 14-FEB-1992

Machines used:

Package ID Orig. computer Test computer
PSR-0277/01 IBM 3033 IBM 3090
top ]
3. DESCRIPTION OF PROGRAM OR FUNCTION

The LEPRICON system provides state-of-the-art routines to prepare input to and process results from the discrete ordinates codes CCC-484/DORT and CCC-254/ANISN to  determine best estimates with uncertainties of group fluences in pressure vessels of pressurized water reactors. The system anticipates availability of results of dosimetry measurements performed in the reactor as well as sources operating during the time of exposure.
top ]
4. METHOD OF SOLUTION

Effects of time-dependent core source spatial distributions, when necessary, are treated by the use of an adjoint  function coupled with a scaling technique. Sources are generated by  combining the results of the diffusion theory code PDQ-7 pin-wise calculations with in-core assembly-wise instrumentation and are converted from X-Y to R-theta geometry. Fluxes calculated by the discrete ordinates codes are then synthesized to form 3-D distributions, and the resulting calculated dosimeter responses compared with the measurements, and adjustments performed in a generalized linear least-squares combination procedure. Through correlations generated from the input, adjustments to the originally calculated group fluxes at a selected point in the pressure vessel are then made, and the best estimates of the fluences accumulated during the time period analyzed are output along with their reduced  uncertainties.
top ]
5. RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM

Much of the input data to the adjustment routine may be defaulted to "built-in" values by proper choice of the input options. However, these values may not apply to every reactor, and a caveat must be issued that the user might have to alter some of the definitions of the flux bias factors to describe additional uncertainties peculiar to his own reactor. One may also override any default input if other values are judged more appropriate.
The ISOPLOT4 source, sample input and output files are included on tape but were not tested by RSIC. Users who wish to run ISOPLOT may request PSR-155/DOGS from RSIC to obtain source and additional I/O routines required.
top ]
6. TYPICAL RUNNING TIME

Sample problem running times vary from 1
second for FLUENS to approximately 5 minutes for the LEPRICON ADJUST module.
PSR-0277/01
The different modules of this package were implemented  by NEA-DB on an IBM 3090 computer. The test runs required the following execution times (CPU): DOTSOR 6sec; DOTSYN 2sec; BCBN 8sec; TIMPATCH 3sec; FLUENS 0.3sec; LEPRICON (case 1) 1min50sec; LEPRICON (case 2) 1min45sec.
top ]
7. UNUSUAL FEATURES OF THE PROGRAM

The LEPRICON 56 group data library is essentially based on ENDF/B-IV data, except dosimetry and activation cross sections which were derived from ENDF/B-V.
top ]
8. RELATED AND AUXILIARY PROGRAMS:
PSR-0277/01
DOTSOR              Neutron source distribution in LWR core
DOTSYN              Synthesizes 3-D fluxes
TIMPATCH            Evaluate time-dependent source distribution in
                    PWR surveillance dosimetry
FLUENS              Calculates weighted spectral fluences and
                    uncertainties
ELXSIR              56-group neutron cross-section library for LWR
                    pressure vessel irradiation studies
top ]
9. STATUS
Package ID Status date Status
PSR-0277/01 14-FEB-1992 Tested at NEADB
top ]
10. REFERENCES

- R.E. Maerker, B.L. Broadhead and J.J. Wagschal
  Theory of a New Unfolding Procedure in Pressurized Water Reactor
  Pressure Vessel Dosimetry and Development of an Associated Data
  Base
  Nuclear Science and Engineering 91, 369-392 (1985).
- R.E. Maerker, B.L. Broadhead, B.A. Worley, M.L. Williams and J.J.
  Wagschal
  Application of the LEPRICON Unfolding Procedure to the Arkansas
  Nuclear One-Unit 1 Reactor
  Nuclear Science and Engineering 93, 137-170 (1986).
- R.E. Maerker
  LEPRICON Analysis of Pressure Vessel Surveillance Dosimetry
  Inserted into H.B. Robinson-2 During Cycle 9
  Nuclear Science and Engineering 96, 263-289 (1987).
- R.E. Maerker, M.L. Williams and B.L. Broadhead
  Accounting for Changing Source Distributions in LWR Surveillance
  Dosimetry Analysis
  Nuclear Science and Engineering 94, 291-308 (1986).
PSR-0277/01, included references:
- M.L. Williams:
  DOTSOR - A Module in the LEPRICON Computer Code System for
  Representing the Neutron Source Distribution in LWR Cores
  EPRI Research Project 1399-1, Interim Report (December 1985).
- M.L. Williams et al.:
  DOTSYN - A Module for Synthesizing Three-Dimensional Fluxes in the
  LEPRICON Computer Code System
- R.E. Maerker et al.:
  TIMPATCH - A MODULE in the LEPRICON Computer Code System for
  Evaluating Effects of Time-Dependent Source Distributions in PWR
  Surveillance Dosimetry
  EPRI Research Project 1399-1, Interim Report (December 1985).
- R.E. Maerker:
  FLUENS - A Module in the LEPRICON Computer Code System for
  Obtaining Weighted Spectral Fluences and Their Uncertainties
  EPRI Research Project 1399-1, Interim Report (December 1985).
- B.L. Broadhead et al.:
  LEPRICON Adjustment Module - A Generalized Linear Least Squares
  Data Analysis Program with Application to PWR Surveillance
  Dosimetry
  EPRI Research Project 1399-1, 1399-2, Interim Report (March 1985).
- R.E. Maerker et al.:
  The ELXSIR Cross-Section Library for LWR Pressure Vessel
  Irradiation Studies - Part of the LEPRICON Computer Code System
  EPRI-NP3654 (September 1984).
top ]
11. MACHINE REQUIREMENTS:  LEPRICON runs on the IBM 3033.
PSR-0277/01
LEPRICON required for execution of the test case 1976 Kbytes of IBM 3090 main storage.
top ]
12. PROGRAMMING LANGUAGE(S) USED
Package ID Computer language
PSR-0277/01 FORTRAN-IV
top ]
13. OPERATING SYSTEM UNDER WHICH PROGRAM IS EXECUTED

The sample cases  were executed under OS/VS2 using the IBM VS FORTRAN compiler (Level  2.2.0). The language level flag must be set to 66. The LEPRICON source (file 23) should be compiled with OPT=1.
PSR-0277/01
The test cases were run on IBM 3090 under MVS/XA. The source codes were compiled with the VS FORTRAN compiler version 2.
top ]
14. OTHER PROGRAMMING OR OPERATING INFORMATION OR RESTRICTIONS:
top ]
15. NAME AND ESTABLISHMENT OF AUTHORS

Contributed by: Radiation Safety Information Computational Center
                Oak Ridge National Laboratory
                Oak Ridge, Tennessee, U. S. A.
top ]
16. MATERIAL AVAILABLE
PSR-0277/01
File name File description Records
PSR0277_01.001 Information file 178
PSR0277_01.002 DOTSOR source 1933
PSR0277_01.003 DOTSOR sample input 1610
PSR0277_01.004 DOTSOR sample output 4438
PSR0277_01.005 DOTSOR JCL 105
PSR0277_01.006 BCBN source 45
PSR0277_01.007 BCBN JCL 108
PSR0277_01.008 ELXSIR cross-section library 33722
PSR0277_01.009 DOTSYN source 901
PSR0277_01.010 DOTSYN sample input 310
PSR0277_01.011 DOTSYN sample output 1804
PSR0277_01.012 DOTSYN JCL 114
PSR0277_01.013 TIMPATCH source 431
PSR0277_01.014 TIMPATCH sample input 364
PSR0277_01.015 TIMPATCH sample output 2716
PSR0277_01.016 TIMPATCH unit 21 input data 269
PSR0277_01.017 TIMPATCH unit 22 input data 269
PSR0277_01.018 TIMPATCH JCL 110
PSR0277_01.019 FLUENS source 219
PSR0277_01.020 FLUENS sample input 19
PSR0277_01.021 FLUENS sample output 282
PSR0277_01.022 FLUENS unit 2 input data 925
PSR0277_01.023 FLUENS unit 3 input data 925
PSR0277_01.024 FLUENS unit 1 input data 21
PSR0277_01.025 FLUENS JCL 108
PSR0277_01.026 ISOPLOT4 source 2411
PSR0277_01.027 ISOPLOT4 sample input 417
PSR0277_01.028 ISOPLOT4 sample output 1405
PSR0277_01.029 ISOPLOT4 JCL 25
PSR0277_01.030 FIDAS source 691
PSR0277_01.031 LEPRICON source 5888
PSR0277_01.032 SENPRO data 19989
PSR0277_01.033 COVERX data 30162
PSR0277_01.034 Benchmark data (test case 1) 236
PSR0277_01.035 Linkage editor input for LEPRICON 13
PSR0277_01.036 LEPRICON sample input (test case 1) 45
PSR0277_01.037 LEPRICON sample output (test case 1) 2682
PSR0277_01.038 LEPRICON JCL (test case 1) 138
PSR0277_01.039 COVERX updated data for test case 2 30162
PSR0277_01.040 Benchmark data for test case 2 236
PSR0277_01.041 LEPRICON sample input (test case 2) 39
PSR0277_01.042 LEPRICON sample output (test case 2) 2012
PSR0277_01.043 LEPRICON JCL (test case 2) 129
PSR0277_01.044 RFLUX for DOTSYN (binary) 20
PSR0277_01.045 RZFLUX for DOTSYN (binary) 2167
PSR0277_01.046 RTFLUX for DOTSYN (binary) 1984
PSR0277_01.047 ADJOINT for TIMPATCH (binary) 2020
top ]
17. CATEGORIES
  • G. Radiological Safety, Hazard and Accident Analysis

Keywords: dose rates, doses, monitoring, pressure vessels, pwr reactors, radiation doses, time dependence.