| Being able to use fire is a symbol of human civilization. Fire can not only benefit human beings, but sometime it also disobey human's will and harm them. As the saying goes: "Good using of fire is man's fortune, bad using of fire is a disaster." When fire lose control, it become disaster. Fire accident always cause injuries, deaths, property losses and pollution in atmosphere, soil and river. Furthermore, gases and radioactive substance release during burning upset the balance of environment and has many long-lasting effects. In recent years, people's environmental awareness has been reinforcing. They begin paying more and more attention to the harm that fire accident will make to the nature environment and the to the plants and the animals.China's fire accident statistics shows 1)that the total amount of fire accident during1993-2002 is much more than that of 1983-1992; 2)and that the ratio of Group Injured and Group Death during fire accident tends to rise sharply; 3)Inflammable sites such as petroleum chemical enterprises, colliery, forest are the most frequently places that fire accident occurred.The reason for these phenomena are:·Successively high-speed economic growth enlarge the scale of production as well as the utilization amount of power and oil, which bring more potential opportunity to get fire.·Adoption of new technology and new materials increase the scope of fire initiator.·China's Firefighting system lag largely behind the development of the whole economy, which result in its weak capability of fire control.·Frequently occurred fire accident give rise to heavy injuries, deaths, losses and do great harm to the environment, which finally lead to vicious circle.Fire accident is a burning out of control. Burning is a procedure composed of inflammable materials and oxidant, It can release energy, light, smoke and poisonous gases such as: Carbonic oxide, Carbonic dioxide, Hydrogen cyanide, Acrylic aldehyde, Chlorine cyan, Sulfur dioxide and Ammonia etc.. All these gases do harm to human beings in different ways and to varying degree. For example, carbonic dioxide and carbonic oxide can cause people feel tough in breath, headache, obnubilation and even death. The gases discharged while burning are also the main factors which bring about Greenhouse effect and aggravate the development Ernino that finally result in drought, flood and forest fire. Dust is another substance release during fire accident. They formulate in the atmosphere poisonous granules which not only might be breathed into human's lump and do harm to their health, but also might become Carriers or Reaction Bed for other polluting materials in the air. Besides, they can also be transported by the airflow to hundreds or thousands of kilometers above the surface of the earth and polluted larger area of atmosphere. The deconstructive effects of fire accident lie in the following perspectives:·burn down the buildings and formulate gray rubbish.·discharge poisonous gases and other harmful substances.·destroy forest, grassland, natural environment and the ecological balance.·waste natural resources.The application of Halone fire extinguishing chemical also do vital harm to environment because when it is released into the air, it destroys the ozonosphere and makes Ozone Hole which exposes humans, animals and plants directly under ultraviolet radiation and causes high possibility of illness, crops output reductions and ecological disturbance.Poisonous substances are always carried by the water and foam using in firefighting to flow and leak into river, drainage and underground. These water pollution is shocking and it must draw human's much close attention.A survey conduct among Changchun's fire accident in recent year indicates that:1)the situation of fire accident is very severe. It has been doing great harm to production, people's daily life and the whole environment. The problem should not be overlook anymore; 2)Changchun's firefighting facility system is weak. There are not... |
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