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Title: Experimental study of hydrogen formation and recombination under postulated LMFBR accident conditions

Abstract

The report describes an experimental study of hydrogen jets burning in air, hydrogen formation by sodium in humid air atmospheres, and the effects of nitrogen, water vapor sodium vapor/aerosol, jet velocity, and jet temperature on ignition of hydrogen jets. The results show that hydrogen jets above 1450/sup 0/F (788/sup 0/C) issuing into an air atmosphere need no ignition source for ignition, a hydrogen jet temperature higher than 500/sup 0/F (260/sup 0/C) and containing more than six grams of sodium per cubic meter of jet gas will auto-ignite in an air atmosphere, the burning efficiency of a hydrogen jet decreases rapidly to zero when the oxygen concentration outside the flame region approaches 10 percent, and hydrogen does not form from a sodium-nitrogen jet issuing into a humid air atmosphere until the ratio O/sub 2//(H/sub 2/O + O/sub 2/) is less than 0.5.

Authors:
;
Publication Date:
Research Org.:
Hanford Engineering Development Lab., Richland, Wash. (USA)
OSTI Identifier:
7318053
Report Number(s):
HEDL-TC-730
TRN: 77-006242
DOE Contract Number:  
EY-76-C-14-2170
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
22 GENERAL STUDIES OF NUCLEAR REACTORS; 21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS; HYDROGEN; FIRE HAZARDS; LMFBR TYPE REACTORS; MELTDOWN; COMBUSTION; FIRES; REACTOR SAFETY; RECOMBINATION; SYNTHESIS; ACCIDENTS; BREEDER REACTORS; CHEMICAL REACTIONS; CRYOGENIC FLUIDS; ELEMENTS; EPITHERMAL REACTORS; FAST REACTORS; FBR TYPE REACTORS; FLUIDS; HAZARDS; LIQUID METAL COOLED REACTORS; NONMETALS; OXIDATION; REACTOR ACCIDENTS; REACTORS; SAFETY; 220900* - Nuclear Reactor Technology- Reactor Safety; 210500 - Power Reactors, Breeding

Citation Formats

Wierman, R. W., and Hilliard, R. K. Experimental study of hydrogen formation and recombination under postulated LMFBR accident conditions. United States: N. p., 1976. Web. doi:10.2172/7318053.
Wierman, R. W., & Hilliard, R. K. Experimental study of hydrogen formation and recombination under postulated LMFBR accident conditions. United States. https://doi.org/10.2172/7318053
Wierman, R. W., and Hilliard, R. K. 1976. "Experimental study of hydrogen formation and recombination under postulated LMFBR accident conditions". United States. https://doi.org/10.2172/7318053. https://www.osti.gov/servlets/purl/7318053.
@article{osti_7318053,
title = {Experimental study of hydrogen formation and recombination under postulated LMFBR accident conditions},
author = {Wierman, R. W. and Hilliard, R. K.},
abstractNote = {The report describes an experimental study of hydrogen jets burning in air, hydrogen formation by sodium in humid air atmospheres, and the effects of nitrogen, water vapor sodium vapor/aerosol, jet velocity, and jet temperature on ignition of hydrogen jets. The results show that hydrogen jets above 1450/sup 0/F (788/sup 0/C) issuing into an air atmosphere need no ignition source for ignition, a hydrogen jet temperature higher than 500/sup 0/F (260/sup 0/C) and containing more than six grams of sodium per cubic meter of jet gas will auto-ignite in an air atmosphere, the burning efficiency of a hydrogen jet decreases rapidly to zero when the oxygen concentration outside the flame region approaches 10 percent, and hydrogen does not form from a sodium-nitrogen jet issuing into a humid air atmosphere until the ratio O/sub 2//(H/sub 2/O + O/sub 2/) is less than 0.5.},
doi = {10.2172/7318053},
url = {https://www.osti.gov/biblio/7318053}, journal = {},
number = ,
volume = ,
place = {United States},
year = {1976},
month = {12}
}