ACCURACY OF WWR-M CRITICALITY CALCULATIONS WITH CODE MCU-RFFI

RERTR
Reduced Enrichment for Research and Test Reactors
Nuclear Engineering Division at Argonne

Home :: 1999 International RERTR Meeting Program :: Related Documents

DISCLAIMER
This report was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government nor any agency thereof, nor The University of Chicago, nor any of their employees or officers, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. Reference herein to any specific commercial product, process, or service by trade name, trademark, manufacturer, or otherwise, does not necessarily constitute or imply its endorsement, recommendation, or favoring by the United States Government or any agency thereof. The views and opinions of document authors expressed herein do not necessarily state or reflect those of the United States Government or any agency thereof, Argonne National Laboratory, or The University of Chicago.

Abstracts and Available Papers Presented at the
1999 International RERTR Meeting

ACCURACY OF WWR-M CRITICALITY CALCULATIONS
WITH CODE MCU-RFFI

Yu.V.Petrov, A.N.Erykalov, and M.S.Onegin
Petersburg Nuclear Physics Institute RAS
188350 Gatchina, St.Petersburg, Russia
yupetrov@thd.pnpi.spb.ru

ABSTRACT

The scattering and deviation of fuel element parameters by manufacturing, approximations of the reactor structure in the computer model, the partly inadequate neutron cross sections in the computer codes etc. lead to a discrepancy between the reactivity computations and data. We have compared reactivity calculations using the MCU-RFFI Monte Carlo code of critical assemblies containing WWR-M2 (36 enriched) and WWR-M5 (90%) fuel elements with benchmark experiments. The agreement was about Dr±0.3%. A strong influence of the water ratio on reactivity was shown and a significant heterogeneous effect was found. We have also investigated, by full scale reactor calculations for the RETR program, the contribution to the reactivity of the main reactor structure elements: beryllium reflector, experimental channels, irradiation devices inside the core, etc. Calculations show the importance of a more thorough study of the contributions of products of the (n,a) reaction in the Be reflector to the reactivity. Ways of improving the accuracy of the calculations are discussed.

PDF version available
The full paper is available in Adobe Systems Inc.'s Portable Document Format (PDF) and can be read and downloaded using Adobe's Acrobat Reader software. This software needs to be installed on your computer either as a separate program or as part of an Internet browser in order to read this paper. Adobe Acrobat Reader can be downloaded free of charge from Adobe's site on the World Wide Web.

If Adobe's Acrobat Reader is installed on your computer, click here to access the full paper in PDF format.

Contact:
Yuri V. Petrov
Professor, Principal Researcher
Petersburg Nuclear Physics Institute
188350 Gatchina
St. Petersburg, Russia

Phone: 7 (812) 714-6096
Fax: 7 (812) 713-1963
E-mail: yupetrov@thd.pnpi.spb.ru

2008 International RERTR Meeting (RERTR-2008):
The Final Technical Program of the 30^th International RERTR Meeting is now available.
For more information visit RERTR-2008.

Links

2007 RERTR Meeting
Prague, Czech Republic, Sep. 23-27, 2007
2006 RERTR Meeting
Cape Town, South Africa, Oct. 29-Nov. 2, 2006
2005 RERTR Meeting
Boston, USA, November 6-10, 2005
2004 RERTR Meeting
Vienna, Austria, November 7-12, 2004
2003 RERTR Meeting
Chicago, Illinois, USA, 5-10 October 2003
2002 RERTR Meeting
Bariloche, Argentina, November 3-8, 2002
2000 RERTR Meeting
Las Vegas, Nevada, USA, 1-6 October, 2000
1999 RERTR Meeting
Budapest, Hungary, 3-8 October, 1999
1998 RERTR Meeting
Sao Paulo, Brazil, 18-23 October 1998
1997 RERTR Meeting
Jackson Hole, Wyoming, USA, 5-11 October 1997
1996 RERTR Meeting
Seoul, Korea, 6-11 October 1996
1995 RERTR Meeting
Paris, France, 18-22 September 1995


	ARGONNE NATIONAL LABORATORY, Nuclear Engineering Division, RERTR Department 9700 South Cass Ave., Argonne, IL 60439-4814 A U.S. Department of Energy laboratory managed by UChicago Argonne, LLC

Last modified on July 29, 2008 11:33 +0200

Abstracts and Available Papers Presented at the1999 International RERTR Meeting

ACCURACY OF WWR-M CRITICALITY CALCULATIONS WITH CODE MCU-RFFI

Abstracts and Available Papers Presented at the
1999 International RERTR Meeting

ACCURACY OF WWR-M CRITICALITY CALCULATIONS
WITH CODE MCU-RFFI