skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Analysis of the Three Mile Island (TMI-2) hydrogen burn

Abstract

A study of recorded temperatures and pressures was made. Hydrogen concentrations were calculated. Postburn average ambient temperatures versus time were calculated. Average temperatures were calculated for the region above elevation 347, below elevation 347, and within the D-shield compartments. Results were: Prior to the burn, the hydrogen was well mixed with the containment air. Average hydrogen concentration was 7.9%, wet basis. The hydrogen burn occurred at all three levels in the containment. The burn was initiated somewhere in the lowest level, probably on the west side. The burn time was about 12 s. About 3570 m/sup 3/ or 126,000 ft/sup 3/, 160 kg moles or 319 kg of hydrogen burned. Containment gas temperatures in the flame front were 760/sup 0/C (1400/sup 0/F). Average containment gas temperature at end was 660/sup 0/C (1220/sup 0/F). The gas temperatures decreased much faster below elevation 347 than above elevation 347. The average temperature rise was only about 1.2/sup 0/C (2.2/sup 0/F) as a result of the hydrogen burn. Considerably more energy came from the hot water and steam vented. The burn damage observed was predominantly at the upper elevations and on the north, east, and south quadrants. 1.1% hydrogen remained in the containment aftermore » the burn. Venting of the reactor cooling system during the hour following the burn added an additional 0.6%. Hydrogen concentrations increased from this 1.7% to about 2.2% between March 30 and April 2. One of two Rockwell hydrogen recombiners removed 112 kg of hydrogen. A total of 459 kg of hydrogen gas were accounted for. Assuming that 432 kg were generated by the zirconium-steam reaction, 9850 kg Zr would have been oxidized.« less

Authors:
;
Publication Date:
Research Org.:
Rockwell International Corp., Richland, WA (USA). Energy Systems Group
OSTI Identifier:
6652043
Alternate Identifier(s):
OSTI ID: 6652043; Legacy ID: DE82020725
Report Number(s):
RHO-RE-SA-8-Rev.1; CONF-830103-21-Rev.1
ON: DE82020725
DOE Contract Number:  
AC06-77RL01030
Resource Type:
Conference
Resource Relation:
Conference: 2. international topical meeting on nuclear thermalhydraulics, Santa Barbara, CA, USA, 11 Jan 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; THREE MILE ISLAND-2 REACTOR; REACTOR ACCIDENTS; COMBUSTION; HYDROGEN; MASS; ACCIDENTS; CHEMICAL REACTIONS; ELEMENTS; ENRICHED URANIUM REACTORS; NONMETALS; OXIDATION; POWER REACTORS; PWR TYPE REACTORS; REACTORS; THERMAL REACTORS; THERMOCHEMICAL PROCESSES; WATER COOLED REACTORS; WATER MODERATED REACTORS 220900* -- Nuclear Reactor Technology-- Reactor Safety; 210200 -- Power Reactors, Nonbreeding, Light-Water Moderated, Nonboiling Water Cooled

Citation Formats

Henrie, J.O., and Postma, A.K. Analysis of the Three Mile Island (TMI-2) hydrogen burn. United States: N. p., 1982. Web.
Henrie, J.O., & Postma, A.K. Analysis of the Three Mile Island (TMI-2) hydrogen burn. United States.
Henrie, J.O., and Postma, A.K. Thu . "Analysis of the Three Mile Island (TMI-2) hydrogen burn". United States.
@article{osti_6652043,
title = {Analysis of the Three Mile Island (TMI-2) hydrogen burn},
author = {Henrie, J.O. and Postma, A.K.},
abstractNote = {A study of recorded temperatures and pressures was made. Hydrogen concentrations were calculated. Postburn average ambient temperatures versus time were calculated. Average temperatures were calculated for the region above elevation 347, below elevation 347, and within the D-shield compartments. Results were: Prior to the burn, the hydrogen was well mixed with the containment air. Average hydrogen concentration was 7.9%, wet basis. The hydrogen burn occurred at all three levels in the containment. The burn was initiated somewhere in the lowest level, probably on the west side. The burn time was about 12 s. About 3570 m/sup 3/ or 126,000 ft/sup 3/, 160 kg moles or 319 kg of hydrogen burned. Containment gas temperatures in the flame front were 760/sup 0/C (1400/sup 0/F). Average containment gas temperature at end was 660/sup 0/C (1220/sup 0/F). The gas temperatures decreased much faster below elevation 347 than above elevation 347. The average temperature rise was only about 1.2/sup 0/C (2.2/sup 0/F) as a result of the hydrogen burn. Considerably more energy came from the hot water and steam vented. The burn damage observed was predominantly at the upper elevations and on the north, east, and south quadrants. 1.1% hydrogen remained in the containment after the burn. Venting of the reactor cooling system during the hour following the burn added an additional 0.6%. Hydrogen concentrations increased from this 1.7% to about 2.2% between March 30 and April 2. One of two Rockwell hydrogen recombiners removed 112 kg of hydrogen. A total of 459 kg of hydrogen gas were accounted for. Assuming that 432 kg were generated by the zirconium-steam reaction, 9850 kg Zr would have been oxidized.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1982},
month = {7}
}

Conference:
Other availability
Please see Document Availability for additional information on obtaining the full-text document. Library patrons may search WorldCat to identify libraries that hold this conference proceeding.

Save / Share: