High-tech Smoke Detectors to Keep Shatabdi Travellers Safe
To ensure safety of 1,000-odd passengers travelling between Chandigarh and Delhi daily, the Northern Railways has installed very early smoke detection apparatus (VESDA) in all coaches of the three Shatabdi Express trains running on this route.
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Simple but effective, the technique of analysing samples of air drawn from an area for the first traces of smoke and a potential fire threat continues to evolve. In this article, we consider the benefits and the compromises of cumulative sampling and consider some of the most recent developments in Aspirating Smoke Detection (ASD) technology which are addressing the challenges associated with detecting smoke.