Item: Sensitivity testing of handcharges and risk management in avalanche control
Title: Sensitivity testing of handcharges and risk management in avalanche control
Proceedings: Proceedings of the 1994 International Snow Science Workshop, Snowbird, Utah, USA
Authors: Chris Stethem and the Canadian Explosives Research Laboratory
Abstract: Prepriming of handcharges in avalanche control provides a greater margin of safety than the practice of control point arming. Prepriming allows minimum exposure time for personnel, improved quality control, a greater margin of team safety and minimum closure time to the public. Low speed impact, such as may occur in a skiing fall, results in potential for detonation only for unprotected or loose detonators. Prepriming the explosives does not increase the hazard with respect to impact, rather it protects the cap from impact which would otherwise cause the cap to detonate. The probability of impact detonation of handcharges in fast moving avalanches is negligible for either preprimed or unprimed explosives.
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Keywords: handcharges, explosives, starting zones
Digital Abstract Not Available