Jiangsu saves some chemical plant to synthesize workshop conduit sudden burst, immediately is hydric and many leak. The factory is led instantly command operation labour is shut advocate a powerful person, add a powerful person, entire plant is urgent jockey. After about 5 minutes, when just when concern personnel,insecurity discussion is like where director friend, synthetic workshop produces explosion suddenly, the explosive center area of more than 1000 square metre is made an appointment with in the area, the factory building with synthetic workshop close tall 10m is become by scamper a remains, around workshop the glass on hundreds window is full shake is broken, explosion causes synthetic workshop to die on the spot 3 people, because the condition of an injury is overweight,have 2 people additionally rescue is invalid death, 26 people are injured.
In this accident, after tubal point out cracks a large number of hydric leak, had had explosive external condition. According to explosive theory, gas can light in air explode must have the following requirement: It is to be able to light the mixture concentration that gas and air form to reach explosion limit, form volatile mixture gas. After conduit burst, hydric and many leak, form instantly combustible explode easily gas mixture, diffuse quickly. Hydric in air explosion limit is 4% ～ 75% , its chroma achieves 18.3% ～ 59% can produce detonation.
2 it is to have the ignition cause that can ignite volatile mixture gas. When hydric from conduit when a large number of leak are ejective, hydric chafe quickly with conduit burst place, produce tall static tension. When electrostatic carry on one's shoulder accumulation arrives when certain amount, with respect to discharge of system of land of butt joint of medium of meeting puncture air, produce electrostatic scintilla, cause explosion thereby.
This removes the happening of the accident, the safety that basically depends on equipment, establishment manages existence blemish, fail to discover hidden danger of conduit hidden accident in time, also fail to be safeguarded in time change. In be on guard want to accomplish on measure:
1, cogent the safety administration that strengthens equipment, corrode to be being caused easily, the conduit of damaged, valve, want to undertake technical analysis and systematic leak hunting regularly, during using equipment cycle overhaul, overhaul thoroughly.
2, forbidden inside area of factory fire and explosive prevention bright fire, enter this region staff to should be worn antistatic take or electric facilities includes; of pure cotton coverall inside the area of fire and explosive prevention of communication equipment; such as forbidden inside this area use mobile phone illumination luminaries, switch should be explosion proof model, electrical wiring is isolated from the hot object that forbidden existence exposes inside area of fire and explosive prevention of; of firm of good, connect.
3, the grooming that adds knowledge of powerful relevant and safe technology, it is dangerous to concerning equipment to increase a worker sexual understanding, build perfect each regulations system, carry out seriously implement concerned safe practice.
4, make meet an urgent need beforehand case, reinforce meet an urgent need beforehand the drilling of the case, raise business management personnel to handle the ability of emergency. In this accident, if can seasonable evacuate produces personnel, can reduce personal casualty.
For better reduce this kind of safe accident, need installs H2 sensor in chemical plant, will monitor the leak of H2 in real time, shenzhen city worker worker collects a net to offer the H2 sensor that answers quickly, following:
The product characteristic of MTCS2601 of sensor of gas of thermal conductivity type:
- Thermal conductivity principle can check sensor of type of low vacuum thermal conductivity to enclose the bulk with medium silicon exceedingly small device in SMD pottery and porcelain, 7*5mm low power comsumption and answer the pressure limits in 01~100mbar quickly inside, exceedingly good sensitivity. Pressure limits can extend 0.0001~1bar to be able to detect the hydric chroma of 0~100%
