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SAFETY FUSE INITIATION [1 record]

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Record 1 1999-10-21

English

Subject field(s)
  • Blasting Work (Mining)
CONT

The safety fuse can be lit by using a match or special fuse igniters with a pyrotechnic head. In countries where safety fuse initiation is normally used, a type of fuse is also employed which is connected to special firing heads attached to the end of the fuse. This means that several fuses can be arranged to be activated from one single lighting point.

OBS

Initiation: The process of causing a high explosive to detonate. The initiation of an explosive charge requires an initiating point, which is usually a primer and electric detonator, or a primer and a detonating cord or fuse.

French

Domaine(s)
  • Travail aux explosifs (Exploitation minière)
CONT

Allumage par mèche de sûreté [...]. Un deuxième procédé d'allumage, commun à toutes catégories d'explosifs, consiste en une mèche de sûreté [...] Cette mèche contient une traînée de poudre fine contenue dans du chanvre ou du coton protégé contre l'humidité par un enroulement de ruban imperméable. Allumée à une extrémité, la flamme circule le long de la mèche et atteint l'autre extrémité enfoncée dans un trou préalablement creusé dans l'explosif qu'elle allume. Ces mèches se consument habituellement à la vitesse de 1 1/2' à 2' à la minute, selon les spécifications du fabricant.

OBS

Aujourd'hui, ces détonateurs sont allumés soit par mèche de sûreté, soit électriquement.

Spanish

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