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Title: Internal fuel motion in annular fuel as an inherent safety shutdown mechanism during hypothetical LMFBR accidents

Abstract

It has been postulated that the use of annular fuel would provide an inherent safety shutdown mechanism during hypothetical LMFBR accidents by providing a pathway for molten fuel to be ejected from the active core region to the fission gas plenum. In this paper, a preliminary assessment of the whole-core reactivity consequences of internal fuel motion in annular fuel during hypothetical transient overpower accidents was performed using the MELT-IIIB/FUMO-E code. It was concluded that internal fuel relocation is an effective inherent safety shutdown mechanism for high reactivity ramp rates on the order of 3$/s. Improvement of the transient fission gas release modeling might expand the range of effectivenwss to substantially lower reactivity ramp rates.

Authors:
; ; ;
Publication Date:
Research Org.:
Hanford Engineering Development Lab., Richland, WA (USA)
OSTI Identifier:
5114965
Report Number(s):
HEDL-SA-2606-FP; CONF-820704-24
ON: DE82020513
DOE Contract Number:  
AC06-76FF02170
Resource Type:
Conference
Resource Relation:
Conference: International topical meeting on LMFBR safety, Lyon, France, 18 Jul 1982; Other Information: Portions of document are illegible
Country of Publication:
United States
Language:
English
Subject:
22 GENERAL STUDIES OF NUCLEAR REACTORS; 21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS; FUEL ELEMENT FAILURE; LMFBR TYPE REACTORS; MELTDOWN; TRANSIENT OVERPOWER ACCIDENTS; REACTIVITY WORTHS; REACTOR SHUTDOWN; ANNULAR FUEL ELEMENTS; COMPUTER CALCULATIONS; CORIUM; LIQUID FLOW; REACTOR KINETICS; REACTOR SAFETY; ACCIDENTS; BREEDER REACTORS; EPITHERMAL REACTORS; FAST REACTORS; FBR TYPE REACTORS; FLUID FLOW; FUEL ELEMENTS; KINETICS; LIQUID METAL COOLED REACTORS; REACTOR ACCIDENTS; REACTOR COMPONENTS; REACTORS; SAFETY; SHUTDOWNS; 220900* - Nuclear Reactor Technology- Reactor Safety; 210500 - Power Reactors, Breeding

Citation Formats

Smith, D E, Martin, F J, Padilla, A Jr, and Waltar, A E. Internal fuel motion in annular fuel as an inherent safety shutdown mechanism during hypothetical LMFBR accidents. United States: N. p., 1982. Web.
Smith, D E, Martin, F J, Padilla, A Jr, & Waltar, A E. Internal fuel motion in annular fuel as an inherent safety shutdown mechanism during hypothetical LMFBR accidents. United States.
Smith, D E, Martin, F J, Padilla, A Jr, and Waltar, A E. 1982. "Internal fuel motion in annular fuel as an inherent safety shutdown mechanism during hypothetical LMFBR accidents". United States.
@article{osti_5114965,
title = {Internal fuel motion in annular fuel as an inherent safety shutdown mechanism during hypothetical LMFBR accidents},
author = {Smith, D E and Martin, F J and Padilla, A Jr and Waltar, A E},
abstractNote = {It has been postulated that the use of annular fuel would provide an inherent safety shutdown mechanism during hypothetical LMFBR accidents by providing a pathway for molten fuel to be ejected from the active core region to the fission gas plenum. In this paper, a preliminary assessment of the whole-core reactivity consequences of internal fuel motion in annular fuel during hypothetical transient overpower accidents was performed using the MELT-IIIB/FUMO-E code. It was concluded that internal fuel relocation is an effective inherent safety shutdown mechanism for high reactivity ramp rates on the order of 3$/s. Improvement of the transient fission gas release modeling might expand the range of effectivenwss to substantially lower reactivity ramp rates.},
doi = {},
url = {https://www.osti.gov/biblio/5114965}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Fri Jan 01 00:00:00 EST 1982},
month = {Fri Jan 01 00:00:00 EST 1982}
}

Conference:
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