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Title: Correlation of recent fission product release data

Abstract

For the calculation of source terms associated with severe accidents, it is necessary to model the release of fission products from fuel as it heats and melts. Perhaps the most definitive model for fission product release is that of the FASTGRASS computer code developed at Argonne National Laboratory. There is persuasive evidence that these processes, as well as additional chemical and gas phase mass transport processes, are important in the release of fission products from fuel. Nevertheless, it has been found convenient to have simplified fission product release correlations that may not be as definitive as models like FASTGRASS but which attempt in some simple way to capture the essence of the mechanisms. One of the most widely used such correlation is called CORSOR-M which is the present fission product/aerosol release model used in the NRC Source Term Code Package. CORSOR has been criticized as having too much uncertainty in the calculated releases and as not accurately reproducing some experimental data. It is currently believed that these discrepancies between CORSOR and the more recent data have resulted because of the better time resolution of the more recent data compared to the data base that went into the CORSOR correlation. Thismore » document discusses a simple correlational model for use in connection with NUREG risk uncertainty exercises. 8 refs., 4 figs., 1 tab.« less

Authors:
; ; ;
Publication Date:
Research Org.:
Oak Ridge National Lab., TN (USA)
OSTI Identifier:
6066811
Report Number(s):
CONF-890546-7
ON: DE89012972
DOE Contract Number:  
AC05-84OR21400
Resource Type:
Conference
Resource Relation:
Conference: Seminar on fission product transport processes in reactor accidents, Dubrovnik, Yugoslavia, 22 May 1989; Other Information: Portions of this document are illegible in microfiche products
Country of Publication:
United States
Language:
English
Subject:
22 GENERAL STUDIES OF NUCLEAR REACTORS; 99 GENERAL AND MISCELLANEOUS//MATHEMATICS, COMPUTING, AND INFORMATION SCIENCE; FISSION PRODUCT RELEASE; C CODES; FUEL ELEMENTS; REACTOR ACCIDENTS; AEROSOLS; CORRELATION FUNCTIONS; F CODES; FISSION PRODUCTS; MATHEMATICAL MODELS; RADIOACTIVE EFFLUENTS; REACTOR SAFETY; SOURCE TERMS; ACCIDENTS; COLLOIDS; COMPUTER CODES; DISPERSIONS; FUNCTIONS; ISOTOPES; MATERIALS; RADIOACTIVE MATERIALS; RADIOACTIVE WASTES; REACTOR COMPONENTS; SAFETY; SOLS; WASTES; 220502* - Nuclear Reactor Technology- Environmental Aspects- Radioactive Effluents; 220900 - Nuclear Reactor Technology- Reactor Safety; 990220 - Computers, Computerized Models, & Computer Programs- (1987-1989)

Citation Formats

Kress, T S, Lorenz, R A, Nakamura, T, and Osborne, M F. Correlation of recent fission product release data. United States: N. p., 1989. Web.
Kress, T S, Lorenz, R A, Nakamura, T, & Osborne, M F. Correlation of recent fission product release data. United States.
Kress, T S, Lorenz, R A, Nakamura, T, and Osborne, M F. 1989. "Correlation of recent fission product release data". United States. https://www.osti.gov/servlets/purl/6066811.
@article{osti_6066811,
title = {Correlation of recent fission product release data},
author = {Kress, T S and Lorenz, R A and Nakamura, T and Osborne, M F},
abstractNote = {For the calculation of source terms associated with severe accidents, it is necessary to model the release of fission products from fuel as it heats and melts. Perhaps the most definitive model for fission product release is that of the FASTGRASS computer code developed at Argonne National Laboratory. There is persuasive evidence that these processes, as well as additional chemical and gas phase mass transport processes, are important in the release of fission products from fuel. Nevertheless, it has been found convenient to have simplified fission product release correlations that may not be as definitive as models like FASTGRASS but which attempt in some simple way to capture the essence of the mechanisms. One of the most widely used such correlation is called CORSOR-M which is the present fission product/aerosol release model used in the NRC Source Term Code Package. CORSOR has been criticized as having too much uncertainty in the calculated releases and as not accurately reproducing some experimental data. It is currently believed that these discrepancies between CORSOR and the more recent data have resulted because of the better time resolution of the more recent data compared to the data base that went into the CORSOR correlation. This document discusses a simple correlational model for use in connection with NUREG risk uncertainty exercises. 8 refs., 4 figs., 1 tab.},
doi = {},
url = {https://www.osti.gov/biblio/6066811}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Sun Jan 01 00:00:00 EST 1989},
month = {Sun Jan 01 00:00:00 EST 1989}
}

Conference:
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