This European Standard specifies a method to determine the tendency of a propellant to undergo transition from deflagration to detonation. It applies to propellants of a grain size up to 8 mm. This method does not apply to black powder.
BS EN 13938-3:2003 history
2003BS EN 13938-3:2003 Explosives for civil uses - Propellants and rocket propellants - Determination of deflagration to detonation transition