Accidental releases of two-phase multicomponent critical flow from horizontal pipes

An accident involving a two-phase release can result in serious consequence s for people as well as the environment. Consequently, tools are needed to give accurate predictions of the discharge rate, physical state, compositio n of released material, and chocked pressure in order to improve process sa fety efficiency. This paper discusses possible approaches to the examination of two-phase cr itical releases and presents a slip equilibrium model which provides critic al flow rate critical pressure, and phase function of the two phases emergi ng from an accidentally broken pipe containing a liquefied gas mixture unde r pressure. Comparisons between experimental critical flow rates and model predictions are favorable in both monocomponent and multicomponent mixtures.