- Description of extinguishing a transformer fire
In Taiwan, electrical power is generated from nuclear, hydro, and thermal power plants. Transformers change the voltage from generators to a level suitable for transmission to minimize losses. Through transmission lines, power is delivered to substations. These substations will transport electrical power to industrial, commercial, or residential customers.
In recent years, due to the rapid development of industry and the increasing demand for power energy, many transformers in substations are used. When the load capacity is operated for a long time, the number of faults and abnormalities of power transformers will increase, and the insulation materials of transformers will gradually deteriorate during operation, which will cause the overheating of insulating oil and decompose combustible gas and drain oil, A large amount of burning insulating oil (ignition point is about 140 ℃) will affect nearby combustible, causing severe transformer fire, resulting in serious loss of power failure.
This case was a fire caused by overheating of insulating oil. The UVIR flame detector detected the fire and then extinguished it. Water Mist system can effectively suppress the growth of fire and minimize the fire damage of substation equipment. Due to the small particle size and large surface area, it can absorb heat quickly to achieve the function of cooling, blocking heat radiation, washing toxic smoke, and spraying it without conductivity, which is a function that other fire extinguishing systems can’t achieve and have. This is reason why the water mist system becomesso popular around the world.
- Description of extinguishing a cable roomfire
The distribution of various lines in the cable room, the staggered configuration of pipelines and circuits, and the insulation coating of power cables such as polyethylene, are combustibles with potential fire hazards. Once on fire, it will spread quickly, and the fire flamed intensely like oil fires.
When the fire is burning at high temperature, it will release thick smoke and toxic gasesbecause of the rubber sheath of the cable (petroleum attached products). This is a category C deep fire phenomenon. The characteristics of the traditional water system and gas system are not easy to put it out. But the water mist particles can continuously wash the toxic gases and reduce the temperature. In addition to extinguishing the fire, it also provides a safer protection shieldto the firefighters. This video mainly showed that water mist is suitable for electrical equipment fire, and its non-conductive and fast fire extinguishing characteristics provide the best proof of another fire protection for the ownerand proprietor.
- Description of actual fire fighting of chemical waste tank fire
There are many unexpected industrial substances in the chemical waste, so the risk of chemical waste can’t be ignored. Chemical waste may produce toxic gases, high temperature explosion and other dangerous materials.Therefore, it is necessary to monitor the environment all the time including temperature change and toxic gas concentration. During dangerous, it is especially important to take actions as soon as possible to minimize the damage.
This fire was caused during the process of chemical waste classification and grind. The fire was detected by the detector during a small fire, and the water mist system was started in a few seconds to have function of cooling, washing, and extinguishing. Due to the small particle size of high-pressure water mist and its powerful kinetic energy, it can effectively wash the concentration of toxic gases. During normal time the detectors reach the set (VOC) concentration of toxic gas, it will actuate the water mist system toprevent gas explosion. This is because the water mist particle can wash the toxic gases and dissolve them into waterto decrease the concentration of the toxic gases. This is what the ancients said nip it in bud.