Detonability of H2-Air-Diluent Mixtures (NUREG/CR-4905, SAND85-1263)

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Publication Information

Manuscript Completed: March 1987
Date Published:
June 1987

Prepared by:
Sheldon R. Tieszen, Martin P. Sherman
William B. Benedick, Marshall Berman
Reactor Safety Research Department
Severe Accident Containment Response Division
Sandia National Laboratories
P.O. Box 5800
Albuquerque, New Mexico 87185
Operated by Sandia Corporation
for the U.S. Department of Energy
Under Contract No. DE-AC04-76DP00789

Prepared for:
Accident Evaluation Branch
Division of Reactor System Safety
Office of Nuclear Regulatory Research
U.S. Nuclear Regulatory Commission
Washington, DC 20555-0001

Under Memorandum of Understanding DOE 40-550-75

NRC FIN A-1246

Availability Notice


This report describes the Heated Detonation Tube (HDT). Detonation cell width and velocity results are presented for H2-air mixtures, undiluted and diluted with CO2 and H22O for a range of H2 concentration, initial temperature and pressure. The results show that the addition of either CO2 or H2O significantly increases the detonation cell width and hence reduces the detonability of the mixture. The results also show that the detonation cell width is reduced (detonability is increased) for increased initial temperature and/or pressure.

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