ANALYSIS METHODS OF EXPLOSION FIRE HAZARD OF MIXTURES OF FUEL AND AIR ON AN EXAMPLE FOR JET FUEL RT. VIII. COMPARISON OF METHODS OF DOROFEEV, RD 03-409–01 AND BST2

The comparative analysis of methods of Dorofeev, RD 03-409–01 and BST2 is made on an example of the settlement contingency situation of vapor cloud explosion of 500 kg jet fuel.Values of radius of destructions of the 1st class on methods RD 03-409–01 and Dorofeev coincide and practically do not depend on an explosion mode. The BST2-technique yields values of radius R for this class of a zone of destructions on 10–54 %less, than methodsRD03-409–01 and Dorofeev. Satisfactory coincidence of forecasts R only on method BST2 atMf = 1,6 and by technique RD 03-409–01 for a detonation mode is marked for destructions of the 2nd class. For the same mode, the Dorofeev's approach yields overestimated forecasts R for classes of zones of destruction 2–5 in comparison with techniques BST2 and RD 03-409–01, including the TNT-method. In a case deflagration received on the BST2 values R for 2–5 classes of zones of destruction are less than explosions in comparison with approaches RD 03-409–01 and Dorofeev. Verification of these methods is executed on an instance of vapor explosion of a solvent, which has occurred on November 22nd, 2006 at the CAI factory in Danvers, Massachusetts. The approach of methods of Dorofeev and RD 03-409–01 yields the satisfactory forecast of radiuses of bands of fracture at the known flame speed.