THE EXPLOSION BLAST PREDICTION MODEL IN THE REVISED CPR 14E (YELLOW BOOK)

The well-known Yellow Book, nickname for the publication by the Dutch Ministry of Social Affairs and the Environment contains a number of mo dels for prediction of the effects following an accidental release of hazardous materials. TNO was involved in a complete revision of this Y ellow Book. One of the models that has been completely revised is the blast prediction model for vapor cloud explosions. The Multy-Energy mo del was selected as the new model to be incorporated in the revision. The concept of the Multy-Energy model is widely accepted as a better a lternative to TNT equivalence methods although a practical application is hampered by a lack of guidance for application in practice. Guidan ce for application is given in the revision, though it still leads to conservative solutions. This paper describes how the method should be applied according to the revised Yellow Book. The motivation for the g uidance for application given is discussed by comparison with guidance given in other publications and with experimental results obtained fr om some large scale experimental programs. Present efforts in an ongoi ng research program by TNO to obtain more detailed and sound guidance is presented as well.