M.S. Thesis Presentation by Robert E. Snodgrass
Friday, May 4, 2001

(Dr. William Black, advisor)

"Mitigation of Hazards Posed by Explosions in Underground Electrical Vaults"


A computer program originally written to simulate the occurrence of an arc or gas explosion in an underground electrical vault with manhole cover ejection has been modified and expanded. The program is capable of determining the conditions in the vault with respect to time and the resulting motion of the cover. The improvements provide the ability to more accurately simulate the event and to model mitigation schemes that may reduce the danger posed by the manhole cover. A study of potential mitigation schemes was conducted to determine the effectiveness of the methods to reduce the height attained by the manhole cover and thus minimize the hazard posed by the explosion.