Solder as typical as industry of hot cut exercise accident and photograph official seal model point

Accident of pattern of 16 large trades

Reach photograph official seal model point

Solder to be on guard with accident of safety of hot cut exercise point

Typical case

On April 7, 2018, be located in Baoan area Sha Jing is street limited company of development of Hai Pujia science and technology produces the 10 thousand Shenzhen city that bring industrial garden accident of calamity of one on fire, ham area makes an appointment with 100 square metre. Classics of after the event is preliminary find out, when the accident buys personnel to handle this company to abandon old article because of reject formerly directly, undertake to metallic article inside the workshop cut works, the tinderbox inside workshop of cut scintilla ignition is tasted, flame introduces the valve that discharge wind, caused fire accident to expand.

Solder to produce the account that fire explodes with hot cut exercise

Soldering to work with hot cut is to point to manage the operation that solder or cuts a method eagerly to undertake machining to material, the cause that in exercise process the likelihood causes fire to explode basically includes:

1

Work environment did not undertake keeping apart having combustible explode easily article and gas.

2

Altitude solders lower part did not undertake keeping apart.

3

Gas cylinder is custodial, carry, use violated operating rules.

4

There are pair of solders before the job (cut) generator of canal of fire, balata, acetylene, solder equipment undertakes security is checked.

5

Pipeline of acetylene, oxygen has be short of.

6

Container of solder filling fuel, conduit, did not take corresponding step.

Solder to be on guard with accident of hot cut exercise point

1

Must groom via technical safe skill from personnel of course of study and check qualification, obtain " exercise of special type of People's Republic of China handles card " rear but mount guard works, the member that stop the person that do not have card undertakes cut works soldering.

2

Solder when cut works, will work inside environmental 10m limits all and combustible explode easily article clears clean, have inside the ground channel that should notice work environment, sewer without can light liquid and can burn gas, and whether possible leak can be lighted inside channel reaching the ground and sewer explode easily material, lest cause calamity accident as a result of spark of solder broken bits, metal.

3

Headroom solders when cut, prohibit throwing welding rod head in disorder, to soldering cut exercise lower part should undertake keeping apart, operation completes should accomplish serious and careful examination, affirm without fire hidden trouble rear can leave the scene.

4

Should use the gas cylinder that accords with requirement of national relevant specification, regulations, the keep in storage in gas cylinder, carry, use wait for link to should abide by safe operating rules strictly.

5

Can light to carrying gas and support combustion aeriform conduit should be installed by the regulation, use and manage, to operating personnel and examination personnel should undertake technical safe skill grooms.

6

When container of solder filling fuel and conduit, should combine actual condition to determine solder filling method. When executive substitution method, displacement should complete. Answer to control the incidence with qualitative combustible strictly in the job, executive belt is pressed not when substitution method, answer to maintain constant tension by the requirement. Answer to control its strictly to contain oxygen amount in the job. Should strengthen detect, notice custody, want to safety organizes measure.

Aerobic bottle uses a standard

1

When aerobic bottle is deposited or be being used, should have secured, prevent to roll or fall, install to ensure complete, had better be outside steel bottle device balata bump protection ring and capsule, when steel bottle is used must erect place, prohibit convert is used.

2

Good capsule and shock-proof rubber group should be headed when carrying aerobic jar, use be worn technically or car, prohibit one person carries movement, the explosion after be being touched in case reachs person breaking an injury, aerobic bottle prohibits rolling on the ground, forbidden as oily as fuel kind reach tinderbox to be deposited together reach carry.

3

Aerobic bottle mouth is checked to whether damage first before assembling pressure-relief valve and pressure list reach have without oil kind, if have oil kind taboo, rubber must not be filled up inside bottle mouth, give off reload of a few oxygen to express (receive silk to buckle must appropriate, should go up full 5 buckle above) .

4

Before opening oxygen, exit thimble first, the flank that handlers must stand in gas cylinder gas outlet is slow actuate, want to use special tool, the movement wants slow, do not get handwheel of door of knock oxygen cut, express collapse released gas from pastry to injure a person in case, the top after installation glue is in charge of gives a few oxygen to go up again solder, aerobic glue canal and gas cylinder and solder joint, must use v/LIT all over the ground prison of anneal iron wire.

5

When aerobic bottle takes a watch to carry, must have closed aerobic cut door, thimble is exited, lest express collapse,injure a person. Aerobic bottle prohibits be being put in temperature to reach the place with point-blank sun high too, in case temperature crosses tall happening to explode.

6

Aerobic bottle pressure-relief valve and pressure watch must be filled up firm, lest scroll will express attaint or hair to give birth to an accident, oxygen must not exhaust, at least remnant 0.5MPa, enter gas cylinder in order to prevent outside air, indicate " empty " model of written characters.

7

Aerobic bottle and bright fire distance should not be less than 10m, when having difficulty, due and reliable adiabatic preventive measure, but must not be less than 5m, aerobic bottle and acetylene bottle distance must not be less than 5m.

8

Be in when aerobic bottle electric welding is same workplace, bottom should fill up insulant, prevent the electric welder that be entered by change 2 times loop.

9

Bottle of oxygen of swing of forbidden use crane.

10

Furnish answers on the converge output manager that paralell connection uses one-way a powerful person.

11

When bottle of weather chill oxygen freezes, must not use fire to bake, can leave with lukewarm to hydrate, produce an accident in case.

Acetylene bottle uses a standard

1

Acetylene bottle is being used, carry, when keep in storage must erect and fixed, forbidden lie put or dump.

2

Should light light discharge, prohibit knock, collision.

3

Must not stand by heat source and electric equipment, the summer should avoid insolate, when environmental temperature exceeds 40 ℃ , should adopt drop in temperature the distance of measure and aerobic bottle must not be less than 5m, the distance with bright fire must not be less than 10m.

4

When cylinder valve is frozen forbidden bake with fire, can use hot water or vapour defrost when necessary.

5

Forbidden put in ventilated and undesirable or the place that has radioactivity material, and must not put on the dielectric such as balata.

6

When using must mount appropriative pressure-relief valve, the operation when open wants light, delay, the side that the body should stand in mouth of a powerful person is rear.

7

Use pressure must not exceed 0.15MPa, the gas inside bottle is forbidden and spent, must stay have not the pressure under 0.1MPa.

8

Special car should be used when carrying, must not use crane swing. Acetylene bottle, aerobic bottle prohibits be being carried with the car, also do not get as combustible as other article carry with the car.

9

When acetylene bottle is used, cutting torch of a solder configures a temper to prevent implement reach pressure regulator.

10

Welder makes ground acetylene bottle put a quantity to must not exceed 5, when exceeding, between the due and separate store inside the workshop, if exceed 20, should place in acetylene bottle library.

11

Store due management of person specially assigned for a task, answer card of pensile and safe mark.