Thursday, December 23, 2010

【 Weak current College 】 crenellated workshop fire---Power By 【 China power house network 】


In recent years, with economic development, technological innovation, all kinds of old has been crenellated plant retrofit, but there are still some small, inefficiency of State-owned and private enterprises due to lack of funds are not in place, and production safety management oversight, control, fire fighting measures have not been implemented in a timely fashion, leading to various fire accidents continue to occur, to enterprises to bring huge economic losses, therefore, to enhance their fire suppression, minimize fire losses is very necessary.
  
First, the structure of a crenellated powerhouse features
  
Most of the crenellated plant was built in the last century, mainly applicable to all kinds of large, medium-sized enterprises in the textile, printing and dyeing workshop, with large, refractory grade low; equipment, internal noise; high density, poor ventilation, etc.
  
First, the construction area, the fire resistance rating is low. Subject at the time of construction materials, construction, construction funds available, typically crenellated workshop-wood, brick, is often more than a few cross-or cross-linked together, building area is big. Part of the old factory buildings roofing materials mostly wood wood, wood beam load bearing members, intermediate smooth no poles, in the event of fire, most likely the collapse of the housing deficit, forming large combustion.
  
Second, production equipment, the workplace internal noise. Construction General crenellated workshop for labour-intensive enterprises, technical content was relatively low, and production equipment, process cumbersome, top, bottom line products, semi-finished products, internal device settings. Because device long time operation fall machines, appliances and other equipment on cotton, others, fibers, dust, etc. are not promptly cleaning, over time, causing friction and heat accumulation and machine smoke burst into flames, causing fire.
  
The third is the shop channel density, poor ventilation conditions. According to the technological process of production needs, the workshop and shop through one another, to blend, roof top, set beneath a protective layer of roof set, shop around to set a number used to transport raw materials and semi-finished products of ventilation ducts, heat slowly, spread quickly, and vulnerable to all kinds of fires.
  
Second, crenellated workshop fire characteristics
  
One is combustible and spread quickly. Due to production needs, put a lot of raw material shop memory, accessories, blank, semi-finished products, finished products and other inflammable substances, after high temperature heating is not effective thermal treatment, extremely easy Cumulus hot forming, fire incidents of spontaneous combustion, and cotton and linen, wool, chemical fiber, featurettes, and so many combustible fabric, easy formation "flashover", it is easy to form a solid combustion inside and outside.
  
The second is smoke concentration, evacuation difficult. Shop more internal sealed, span, fires, chemical fiber, acrylic, dyes, etc for burning a lot of toxic fumes of long polymer dispersing, the short time it is difficult to exclude, smoke concentration, poor visibility, and because fewer personnel evacuation channels is relatively dense, evacuation difficult.
  
Third, it is difficult to fight. As a result of cotton and linen, wool, chemical fiber, and other combustible fabric with smoldering characteristics, in the event of a fire will produce a large amount of smoke, fire fighters to in-depth internal effective fire detection and accurate implementation of segmentation-fighting. Sometimes smoke from a pipe to another shop and parts, other parts of the smoke-filled scene of illusion, making it difficult to ascertain, burning sites to reconnaissance and fire-fighting work has brought a certain degree of difficulty.
  
3. the measures and countermeasures
  
For this type of fire to fight, we should implement the "save the first and the accurate, rapid assault call annihilation" guiding ideology, according to the fire site, and you can use conditions to take effective measures, decisiveness.
  
A timely surveillance, accurate understanding and mastering the most basic. Know the known, the victory. Onsite, combat commanders should promptly asked the workshop leaders or security personnel, do a personal protective premise in-depth fire scene for fire detection, fire point location and the surrounding circumstances, burning material, physical and chemical properties, fire range and other basic information, and on the lower level workshop for reconnaissance. According to the scope of combustion and ignition, in accordance with the advance of fire fighting plan, structured, purposeful, orderly interception of fighting. Fires of reconnaissance to infuse fires always, keep building structure is deformed.
  
The second is to organize evacuation, first to the rescue of trapped. Due to the many employees of acute mental quality is poor, especially women workers after the accident, fire, panic at the unknown direction of rampant everywhere, unable to find safe export was smoke smoked, even a choke. Therefore, we conduct reconnaissance fires, follow the "to save the first" principle, grasp the basic staff were trapped, quickly organized, orderly boot trapped workers evacuated to safety. To participate in the evacuation of firefighters to prior Division, clear accountability considerations, evacuation zone, had already been evacuated to the area in obvious location paste "have search and rescue" and other reflective warning tag, to avoid duplication of search and rescue and evacuation, waste of time, the impact on efficiency.
  
The third is to ensure that the fire perimeter interception does not vary with the direction the wind is adjacent. In full of the smoke of burning workshop, if not timely to take decisive external intercept control, caused by the ignition point of smoke in the wind-driven, as the ventilation ducts, pedestrian walkways and other relevant means, and quickly spread to the whole plant and the adjacent workshop, to fire personnel within the attack caused certain difficulties. Therefore, we are fighting the battle at the same time, we must strengthen the perimeter fire defense work, fire ladder, high jet car, mobile water cannon and other auxiliary external attack, perimeter intercept control to ensure that the fire did not spread to the surrounding and adjacent to the direction.
  
Fourth, the melee attack within the flexible use of technical and tactical measures. In fighting crenellated factory fire, according to their architectural characteristics and of their own characteristics, flexible use of fire tactical measures reasonably be programming, theInternal fire fighting group in-depth, offensive and fire fighting teams to implement alternative, hacking, left or right holder tandem, case-by-piece measures to eliminate such tactics. In the melee attack, to strengthen the front fighting, Member of the security, internal surveillance personnel, fire officers and a line must wear a safety rope to carry, air ventilator, open position lamps, hue, light lighting and other personal protective equipment, switches and provides attacked, evacuation and communications signals, and prevent accidents.
  
5-move together and give full play to the role of internal fixed fire-fighting facilities. Crenellated factory of internal fire hydrants, automatic sprinkler, fire suppression systems, fire control initially has a very important role, the fire brigade arrived at the scene after the alarm, first check the system is working, if not started, it is necessary to take measures, as far as possible, system uptime, pressure, water from the fire hydrant through pump adapter to the system, use of indoor hydrant and automatic sprinkler system implementation within the fire attack.

No comments:

Post a Comment