Proximal Detection


  1. Petryk, M.W.P.
Corporate Authors
Defence R&D Canada - Suffield, Ralston ALTA (CAN)
A (new) proximal detection regime is proposed herein. Lying between the point and standoff regimes, the proximal regime can be thought of as “non-contact, but near-contact," and is defined as being from 10 cm to 200 m of a contamination threat and therefore usually situated within the hot zone. The concept-of-use for a proximal detector is that can be used by personnel to identify a hot zone rapidly enough and with sufficient sensitivity that such personnel suffer only negligible adverse toxicological effects, even if they are not wearing personal protective equipment. Recognizing that both non-contact (e. g., electro-optic) detectors and exceedingly sensitive contact-based detectors can be used to achieve proximal detection, operational requirements for these two types of detection system are proposed. Exceedingly sensitive contact-based detection technologies can warn a user of proximity to a threat before that threat is toxicologically significant. The Acute Exposure Guideline Level 1 (AEGL-1) standard should be a minimum sensitivity level required of a contact-based proximal detection technique, requiring a response to G- and V- series agent vapours at or below 0.00005 ppm with a response time such that the presence of contamination in a room can be ascertained in less than 10 minutes. Similarly, electro-optically based proximal detectors designed to detect chemical war- fare agent (CWA) vapours should have sensitivities at the AEGL-1 level at shorter ranges (i. e., ca.

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Report Number
DRDC-SUFFIELD-TM-2010-066 — Technical Memorandum
Date of publication
01 Dec 2010
Number of Pages
Electronic Document(PDF)

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