【 Weak current College 】 construction site fire hazards and preventive measures-Power By 【 China power house network 】

According to the relevant Department from the construction site of the fire cause analysis, in the last few years, "illegal use of fire, electrical fire and smoke" is a frequent major direct causes, became the fire safety of construction site "killers". In addition, the construction spot fire equipment equipment equipment configuration does not meet the requirements, fire prevention management system implementation have not been implemented and are also important factors caused by fire.
　　
Hidden a: more flammable combustible
For any construction site, their common characteristic is combustible, inflammable substances. Building site has a lot of temporary buildings, such as work shed, storage, canteens, etc, more use of bamboo, wood, linoleum and other combustible materials, architectural fireproof grade low; construction safety scaffold and all things common combustible material; construction of on-site storage and use of a large number of linoleum, wood, paint, plastic and decoration, decoration materials, flammable and combustible materials.
Due to the construction site, such as cooking, simmer asphalt use open flames, and easy to fly to ignite fuel fire, extremely easy to cause a fire.
Responses:
Strengthen the management of the fire, the heat source. First, it is necessary to strengthen the management of the open fire. Ensure the open fire and flammable combustible yard and warehouse fire separation in 20 meters above the sea level to prevent flying fire. Second, to strict fire system. For the job you want to use open fire must be part of the approval to recursively, after receiving hot card, the Organization hand guard field, job completed, should be clean, prevent the smoldering fire. On the remnants of the fire should be off.
　　
Risk 2: electrical circuit failure
Electrical wiring fault mainly in the electrical circuit overload, short-circuit, insurance is installed not reasonable and conductor junction resistive too large. Line current is too large, causing severe fever, sometimes insulating materials fire occurred in the vicinity of electrical discharge, ignite combustibles, resulting in a second fire.
Responses:
To avoid overload with wire should be at the construction site layout design with electric, carefully calculated after the construction site of the actual load size, rational selection of wire section.
The correct choice of construction site electric wire electric auto switch or fuse rating, and conductors of safety matches the current carrying capacity, and will not permit the use of lead wire, copper wire, etc instead of melting line. The electrical switch must be a qualified manufacturers production of qualified products.
Install power lines should have a professional electrician responsible for installing, strictly according to the construction site of electricity-related practice for construction, all wire connectors must be in accordance with the provisions, splicing, contact to close, good, aerial laying his gum line, regardless of the wire in the same level or at the same elevation, to guarantee the line there is enough space to avoid lines in windy or short circuit, causing a collision switch tripping, power failure, serious will cause a fire.
Cable line of Terminal head and joints are strictly according to norms on high-rise building construction, or other special places, more attention should be paid.
Electrical equipment for outgoing connections with aluminum wire, copper and aluminium transition joints, even if the current is very small and also want to contact a good, solid, to prevent pressure due to the aluminium surface oxidation and cause bad contact.
　　
Risk 3: switch and power distribution box resistance is too large
Construction site distribution box with two fixed, mobile, distribution box electric switch wire, making frequent, crimp, crimping connector does not close, not firm, joint resistance increases, the current time of the adoption of a great heat, and burning around the plastic wood, serious burning plastic wood fire.
Responses:
Distribution box with a certain thickness of the metal manufacture and rainproof, steel doors open and flexible, box appearance should be eye-catching signs.
Distribution box installed electrical switches should use quality products, inside wiring should adopt formal manufacturers of quality sound insulated wires, conductors shall not have scratches, injuries, etc.
Distribution box for switch should press the manual selection, installation.
Inside the switch of arc cover should be intact, not loosing shift, phase separation, applied insulation Board in order to avoid a short circuit caused by disaster and white arc burns.
Wire and switch contact crimp to crimp close when, solid, reduce resistance, reduce the heat when current is passed.
　　
Vulnerability IV: welders accidentally
Construction site using welding equipment for construction jobs in the field of electricity load in occupies a considerable part of the resulting fire is also considerable. The construction site for welders, welding residue, EDM easily ignite combustible materials, thus around a fire.
Responses:
Used welding machines for construction work, first clear the field of fuel to ensure that the site clean and no fuel.
Welding the line should be intact, there is damage cannot be repaired, should promptly replace welded to line.
Electrode holder should be intact, no breakage, leakage current, Electrode holder with welding electrodes shall be charged to move along easy conductive objects to avoid electric shocks hurt, cause a fire.
Welding machine wiring should be standardized, connector crimp close, enclosure intact.
Electric welding personnel should receive special fire training, certificates. Strict approval prior to construction, and the corresponding measures to construction.
　　
Hidden five: lighting electricity confusion
Construction site electric lighting usually are temporary, layout, power cable laying not specification, arbitrariness, luminaries, fixed or stable, away from combustibles near, extremely easy to start a fire accident.
Responses:
Flammable and explosive construction area should use explosion-proof lamps.
Electric light source and the construction area of combustibles should maintain a safe distance, not close to combustibles.
Mobile lighting wires should use rubber sheathed cable, the prohibition of the use of plastic lines along the sides, scaffold, metal bracket installation lighting etc.
Lighting inside wiring should be tight, firm, wire cross section area should meet the requirements.
　　
> Risk six: throw cigarette butts
Due to the construction site personnel and highly concentrated, smokers, no less, coupled with weak fire awareness for migrant workers, cigarette butts everywhere, give the site a potential fire hazard. Not extinguished cigarettes as being blown into fuel on or around the timely processing, will cause a fire.
Responses:
No smoking in the construction site, once a smoker, you must be punished, "censorship. You can set temporary smoking near the site, and to take the necessary security measures.
　　
Hidden 7: fire-fighting equipment facilities equipped with inadequate or inconsistent with the
Focused only on the economic benefits at the expense of safety, fire-fighting equipment facilities equipped with serious enough or not; "whereas"?? Discards of fire extinguishers on sites like; fire-fighting equipment facilities equipped with non-compliant.
Responses:
Construction site to be equipped with adequate fire equipment facilities, according to the fire risk categories are equipped with facilities and equipment for regular repairs, maintenance, and ensure that their sensitive and easy to use.
　　
Hidden eight: building set staff quarters
Some sites in order to save money, get a room in a building built as staff quarters, staff quarters, private travel chaos in temporary cables, received by fire power consumption increased, thereby leaving a potential fire hazard.
Responses:
Determined to put an end to set in the building, the hostel has set out immediately.
　　
Hidden dangers of nine: fire channel blocked
Some construction site while setting up temporary fire channel, channels filled with cement, steel, wood and other debris, fire engine cannot pass. Even some of the construction site is not set up temporary fire channel, in the event of fire, the fire cannot be rushed to the scene on time, delayed rescue time.
Responses:
Reasonable planning construction site, allowed a sufficient spacing of fire, strengthen field road management, and ensure the smooth flow of fire channel 24 hours a day.
　　
Hidden 10: wet lime and other flammable
Lime, etc. is a common case of wet flammable substances, at the construction site usage is large, the fire risk is easily overlooked. A large number of quicklime, substances, such as the heat of hot, high-temperature formation of bad enough to make contact with the fuel carbonization, combustion.
Responses:
Strengthen the wet lime, flammable, combustible materials must not be stacked in the vicinity. The establishment of a separate warehouse, on all types of dangerous goods classification.