Simplified methodology for calculating dump tank volumes

Dump tanks are used as an initial treatment to separate the liquid and gas phases of the discharge from the emergency relief of a runaway chemical rea ctor. Methods are developed for sizing such vessels for vapour pressure, 'g assy' and hybrid systems, requiring iterative solution. A simplified method ology is given, eliminating the need for iteration at the expense of a smal l error. Analysis allows evaluation of the maximum error and accurate predi ction of the actual error involved in each specific case. Examples of sizin g methods are given for vapour pressure and 'gassy' systems.