PROTECTION LEVEL AFFORDED BY THE CANADIAN C7 CANISTER AGAINST SINGLE LARGE-SCALE RELEASE OF CHLORINE

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Authors
  1. Liang, S.H.C.
  2. Yee, E.C.
  3. Armour, S.J.
Corporate Authors
Defence Research Establishment Suffield, Ralston ALTA (CAN)
Abstract
The Canadian C7 canister was challenged at various concentrations of chlorine to determine the breakthrough times. During the breakthrough experiments, it was found that at chlorine concentration above 10,000 ppm, the canister underwent spontaneous ignition before breakthrough occurred. The CANSLAB dense gas model developed at DRES was used to calculate the peak mean concentration and total dosage as a function of downwind distance that can be expected from the catastrophic failure of chlorine cyclinders and tank cars under the worst but feasible meteorological condition. Combining the CANSLAB calculations and the breakthrough results, distances downwind of the release site where the C7 cnaister will ignite (spontaneous ignition distance) or allow breakthrough of chlorine (breakthrough distance) were determined. From the combined result, it could be concluded that providing the wearer is beyond the spontaneous ignition distance, the C7 canister should provide the wearer with respiratory protection and to safetly evacuate from an area contaminated with chlorine.
Keywords
Breakthrough times;C7 canisters;CANSLAB dense gas model;Spontaneous Ignition distance
Report Number
DRES-680 —
Date of publication
01 Nov 1998
Number of Pages
47
DSTKIM No
98-02773
CANDIS No
509758
Format(s):
Hardcopy;Document Image stored on Optical Disk

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