BLAST FOCUSSING HAZARD ASSESSMENT

PDF

Authors
  1. Slater, J.
Corporate Authors
Defence Research Establishment Suffield, Ralston ALTA (CAN);Combustion Dynamics Ltd, Medicine Hat ALTA (CAN)
Abstract
The DRES range has a long history of large scale explosion trials designed to evaluate the blast effects of condensed and fuel-air explosives. Sites commonly used for such trials include the HOB and FAE pads near Currie junction. These sites are approximately 13 km from the nearest residence, 22 km from Redcliff and 27 km from Medicine Hat. Under "normal" and "ideal" atmospheric conditions, thousands of kilograms of explosives may be detonated without any major disturbances to the neighbouring population. Unfortunately, unfavourable weather conditions such as thermal inversions and strong winds can drastically reduce the allowable explosive yield due to shock enhancement and focussing effects. From an operational point of view, this can result in the costly postponement and cancellation of trials and introduce a great deal of uncertainty in trial schedules particularly during the fall and winter seasons when focussing conditions become more frequent. The difficult task of protecting the local population, while accommodating DRES researchers, requires accurate weather information and reliable blast predictions to determine the allowable explosive weights that can be detonated at a given time. The purpose of this contract is to address the latter issue by providing DRES with blast prediction and detection methods. TRUNCATED
Keywords
Atmospheric blast propagation;Blast wave focussing;Blast noise monitoring
Report Number
DRES-CR-98-30 — Contractor Report
Date of publication
01 Jun 1998
Number of Pages
165
DSTKIM No
98-02778
CANDIS No
509655
Format(s):
Hardcopy;Document Image stored on Optical Disk

Permanent link

Document 1 of 1

Date modified: