In the context of a safety study entrusted to Tecsa concerning an existing facility for storing and handling explosive material, it was necessary to assess safety distances for the purpose of estimating consequences for the determination of spatial compatibility.
These distances, defined in the literature as ‘Quantity-Distance’, are calculated as a function of the quantity of explosives in the store.
The study was developed using a dedicated tool, namely Viper::Blast, a tool based on computational fluid dynamics (CFD) to simulate the explosion environment resulting from the detonation of high-energy explosives. This software allows 1D, 2D and 3D simulations to be carried out.
Modelling made it possible to determine:
- the trend of the overpressure wave in time and space;
- the interaction and damping of the wave due to its interaction with protective structures such as embankments;
- the interaction of overpressure waves in the case of simultaneous detonation of several deposits.
