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8. Physics of phenomena
8.1 Decomposition regimes
In pyrotechnics, three decomposition regimes are distinguished, depending on the speed at which the phenomenon propagates. The slowest is combustion, which entails a risk of injury to the operator. When the phenomenon accelerates, we are in the presence of deflagration, with effects that become lethal. Finally, an even faster phenomenon is possible: detonation, associated with the most significant effects.
These definitions differ from those given by combustionists, for whom there are only two regimes, deflagration and detonation, combustion being a slow deflagration.
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- Defence energetic materials, Security vulnerability, Shock sensitivity – Shock sheep test BAM AFNOR - NF T70-500 - 2007
- AFNOR Defence energetic materials, Safety vulnerability, Friction sensitivity – AFNOR BAM test - NF T70-503 - 2019
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Decree no. 2013-973 of October 29, 2013 on the prevention of special risks to which workers are exposed during pyrotechnic activities. Last update of the data in this text: July 01, 2014. NOR : ETST1310032D
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