Fire Safety Science Digital Archive

There are many cultural relic and ancient constructions in Tibet, so how to protect these constructions becomes an important problem. Because of the special geographical location and altitude, the district of Tibet has a very low atmospheric pressure which is 35% less than normal. Measurements were made of the various burning characteristics of the five standard test fires in the standard test rooms in Lhasa and Hefei. At the same time, the responses of various detectors including optical smoke detectors, temperature detectors and carbon monoxide detectors were tested. The results show that low pressure makes the burning rate slower, and the concentration of smoke lower, which make the smoke detectors and temperature detectors respond slower than that in Hefei. Except the wood fire, the maximum of CO concentration was independent of pressure in the other four standard test fires. The study will provide technology support for fire detection and fireproofing of Tibet.