TY - GEN
T1 - Hydrogen cylinder storage array explosion evaluations at the High Flux Isotope Reactor
AU - Cook, David H.
AU - Griffin, Frederick P.
AU - Hyman, Clifton R.
PY - 2010
Y1 - 2010
N2 - The safety analysis for a recently-installed cold neutron source at the High Flux Isotope Reactor (HFIR) involved evaluation of potential explosion consequences from accidental hydrogen jet releases that could occur from an array of hydrogen cylinders. The scope of the safety analysis involved determination of the release rate of hydrogen, the total quantity of hydrogen assumed to be involved in the explosion, the location of an ignition point or center of the explosion from receptors of interest, and the peak overpressure at the receptors. To evaluate the total quantity of hydrogen involved in the explosion, a 2D model was constructed of the jet concentration and a radial-axial integral over the jet cloud from the centerline to the flammability limit in air of 4% was used to determine the hydrogen mass to be used as a source term. The location of the point source was chosen along the centerline at the peak radius associated with the 4% hydrogen contour. Consequences were assessed using a combination of three methods for estimating local overpressure as a function of explosion source strength and distance: the Baker-Strehlow method, the TNT-equivalence method, and the TNO method. Results from the explosions were assessed using damage estimates in screening tables for buildings and industrial equipment.
AB - The safety analysis for a recently-installed cold neutron source at the High Flux Isotope Reactor (HFIR) involved evaluation of potential explosion consequences from accidental hydrogen jet releases that could occur from an array of hydrogen cylinders. The scope of the safety analysis involved determination of the release rate of hydrogen, the total quantity of hydrogen assumed to be involved in the explosion, the location of an ignition point or center of the explosion from receptors of interest, and the peak overpressure at the receptors. To evaluate the total quantity of hydrogen involved in the explosion, a 2D model was constructed of the jet concentration and a radial-axial integral over the jet cloud from the centerline to the flammability limit in air of 4% was used to determine the hydrogen mass to be used as a source term. The location of the point source was chosen along the centerline at the peak radius associated with the 4% hydrogen contour. Consequences were assessed using a combination of three methods for estimating local overpressure as a function of explosion source strength and distance: the Baker-Strehlow method, the TNT-equivalence method, and the TNO method. Results from the explosions were assessed using damage estimates in screening tables for buildings and industrial equipment.
UR - http://www.scopus.com/inward/record.url?scp=78649375137&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:78649375137
SN - 9781617388460
T3 - 2nd International Topical Meeting on Safety and Technology of Nuclear Hydrogen Production, Control, and Management 2010
SP - 212
EP - 215
BT - 2nd International Topical Meeting on Safety and Technology of Nuclear Hydrogen Production, Control, and Management 2010
T2 - 2nd International Topical Meeting on Safety and Technology of Nuclear Hydrogen Production, Control, and Management 2010
Y2 - 13 June 2010 through 17 June 2010
ER -