Nonel
Nonel is a shock tube detonator designed to initiate explosions, generally for the purpose of demolition of buildings and for use in the blasting of rock in mines and quarries. Nonel is a contraction of "non electric".[1] Instead of electric wires, a hollow plastic tube delivers the firing impulse to the detonator, making it immune to most of the hazards associated with stray electric current.
It consists of a small diameter, three-layer plastic tube coated on the innermost wall with a reactive explosive compound, which, when ignited, propagates a low energy signal, similar to a dust explosion. The reaction travels at approximately 2,000 m/s (6,500 ft/s) along the length of the tubing with minimal disturbance outside of the tube.
Nonel was invented by the Swedish company Nitro Nobel in the 1960s and 1970s,[2] under the leadership of Per-Anders Persson,[3] and launched to the demolitions market in 1973.[4] (Nitro Nobel became a part of Dyno Nobel after being sold to Norwegian Dyno Industrier AS in 1986.)
References
[edit | edit source]- ^ Non-Electric (firing system for explosives) The Free Dictionary. Retrieved 13 February 2023
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