Safety knowledge of oxygen-making equipment

1. Help me find the common sense of oxygen production safety.

Send you an oxygen safety regulation, which can be compiled according to the relevant regulations and the actual situation in your place.

It is the best way to avoid safety accidents to remember that there is a good safety operation regulation and strictly abide by it. Oxygen safety regulations 1 general rules 1. 1 This regulation is formulated to implement the policy of safe production, prevent accidents in oxygen plants (workshops and stations) and improve working conditions.

1.2 oxygen production, storage and distribution in metallurgical enterprises, as well as the equipment and facilities used, must comply with this regulation when designing, constructing, operating and maintaining. Anyone who does not meet the requirements of this regulation should be reformed, and safety measures should be taken before the reform.

1.3 Safety "three simultaneities" must be observed when building, expanding and rebuilding oxygen generators. When adopting new technology, new technology and new equipment, there must be safety measures, which shall be implemented after being signed by the person in charge of safety and fire control.

1.4 The construction department shall carry out the construction according to the drawings. If there is any change, it should be approved by the design, construction and production departments.

Important changes must be reported to the superior for approval. 1.5 Establish the responsibility system for production safety.

The factory director, workshop director and foreman are responsible for the safety within their jurisdiction. The mobile department should strengthen management, and the security department is responsible for supervision and inspection.

1.6 workers must receive education in safety production technology and labor discipline. Only by passing the exam can you be allowed to work.

1.7 establish and improve the professional inspection system of safety technology for workshops, industrial structures, pressure vessels and important electromechanical and instrumentation equipment. 1.8 It is forbidden to bring kindling into the "no fire zone" in the factory.

A "Hot Work Permit" must be obtained before each hot work. 1.9 main mechanical and electrical equipment should be put into operation, and it is strictly forbidden to run without listing.

2. General requirements of facilities 2. 1 general layout 2. 1. 1 The site should be located in a clean environment area, and considering the possible impact of the expansion of surrounding enterprises on the safety production of our factory, it should be arranged on the downwind side of the annual minimum frequency wind direction of harmful gases and solid dust emission sources. 2. 1.2 The distance between the air inlet of the air separation unit and harmful gas sources such as acetylene and hydrocarbons should be fully considered according to the environmental quality and the self-purification capacity of the air separation unit, and should not be less than the provisions in Table 1.

2. 1.3 The dust content in the air at the air inlet of the air separation plant shall not be greater than 30mg/m3. 2.2 Category of facilities and fire prevention distance The production category and fire resistance rating of buildings and structures in each workshop and the distance between buildings and structures and other industrial and civil facilities shall comply with the relevant provisions of GBJ 16-87 Code for Fire Prevention of Building Design.

2.2. 1 The production category and minimum fire resistance grade of the workshop shall comply with the provisions in Table 2. 2.2.2 The distance between buildings, structures and facilities and specific places shall not be less than that specified in Table 3.

2.2.3 The fire prevention spacing of related facilities in the following locations is as follows: a. The fire prevention spacing between oxygen (including liquid oxygen) tanks should not be less than the radius of the larger tank in two adjacent tanks; The fire protection distance between hydrogen storage tanks should not be less than the diameter of the larger tank in two adjacent tanks. B the fire protection distance between wet hydrogen storage tanks should not be less than the radius of the larger storage tank in two adjacent storage tanks; The fireproof distance between horizontal hydrogen storage tanks should not be less than 2/3 of the diameter of the larger tank in two adjacent tanks; The fireproof distance between spherical hydrogen tanks should not be less than the diameter of the larger tank in two adjacent tanks; The fireproof distance between horizontal and spherical hydrogen storage tanks and wet hydrogen storage tanks should be determined by a larger value.

C. When the oxygen pressure regulating valve group is provided with a separate valve chamber, the fire prevention interval shall not be less than that specified in Table 3. D the distance between the oxygen buffer, the oxygen storage airbag and the oxygen generator should be determined by considering the process pipeline and convenient operation.

3. Basic requirements for safety protection 3. 1 general protection facilities 3. 1. 1 Fences or fences should be set around the factory. 3. 1.2 Safety signs should be set around all kinds of pressurized gas storage tanks, and separate fences or fences should be set up if necessary.

3. 1.3 The water electrolysis hydrogen production room and storage tank in the plant should be isolated from the surrounding environment, and safety warning signs should be set. 3. 1.4 The access roads, open-air workplaces and patrol inspection equipment in the factory area should have enough lighting lamps, which must comply with the relevant provisions of TJ34-79 Lighting Design Standard for Industrial Enterprises.

3. 1.5 The factory overhead pipeline valves shall be equipped with operating platforms, fences and straight ladders, and their specifications shall comply with the provisions of GB 4053+0-83. 3.2 Fire-fighting facilities 3.2. 1 Fire escape and fire water supply facilities should be set up in the factory according to the relevant provisions of GBJ 16-87 Code for Fire Protection in Building Design.

Fire water supply facilities in cold areas should have anti-freezing measures. According to the needs of fire fighting, other appropriate types and quantities of fire fighting equipment should be provided.

3.2.2 Fire alarm signals and alarm facilities shall be set in the factory. 3.2.3 The configuration of lubricating oil depot shall comply with the relevant provisions of GBJ 16-87 Code for Fire Protection Design of Buildings.

3.3 Electrical Safety 3.3. 1 The power lines and cables in the factory area should be laid underground, and it is forbidden to lay them horizontally with the overhead gas pipeline. Overhead power lines of other enterprises shall not pass over the oxygen plant.

3.3.2 The power supply of the oxygen generator shall comply with the relevant provisions of GBJ52-83 Code for Design of Industrial and Civil Power Supply Systems. 3.3.3 Cable joints and cables in cable trenches shall be coated with fire retardant coatings.

Cable trench should not be connected with other cable trenches, and a fire alarm system should be set up. 3.3.4 The slope at the bottom of the cable trench shall not be less than 5%, and a water collecting well and drainage facilities shall be set at the lowest place.

3.3.5 Substation shall take ventilation and cooling measures as required. 3.3.6 Electrical wiring and equipment must be well insulated.

* * * Live conductors shall be equipped with safety barriers, obvious warning signs and good lighting. 3.3.7 Electrical equipment and devices, metal casings and cables with metal casings must be protected by grounding and zero connection.

3.3.8 The voltage of portable lighting lamps shall not exceed 36V, and the voltage of lamps in metal containers or wet places shall not exceed 12V. Lamps and lanterns in places with explosion danger must be explosion-proof. 3.3.9 In the workplace with explosion and dangerous gas combustion, explosion-proof electrical equipment shall be used according to the requirements of Article 3.4. 1.

3.3. 10 hydrogen production sites should not be equipped with lamps that generate high temperature. 3.3. 1 1 The waist window sealed by double glass on the external wall shall be used for the lighting of the hydrogen bottle warehouse.

3.4 Explosion-proof, lightning protection and anti-static 3.4. 1 Explosion-proof A. The filling platform between oxygen filling bottles should be provided with a reinforced concrete protective wall with a height of not less than 2m. B electrical equipment in explosion and fire danger places must comply with GBJ58-83 code for design of explosion and fire danger.

Hydrogen production room, hydrogen compressor room and hydrogen bottle warehouse belong to Q-2 level, and argon purification single-angle furnace room belongs to H-3 level. Inside the fire protection cover of turbine oxygen compressor.

2. Help me find the common sense of oxygen production safety.

Send you an oxygen safety regulation, which can be compiled according to the relevant regulations and the actual situation in your place.

It is the best way to avoid safety accidents to remember that there is a good safety operation regulation and strictly abide by it. Oxygen safety regulations 1 general rules 1. 1 This regulation is formulated to implement the policy of safe production, prevent accidents in oxygen plants (workshops and stations) and improve working conditions.

1.2 oxygen production, storage and distribution in metallurgical enterprises, as well as the equipment and facilities used, must comply with this regulation when designing, constructing, operating and maintaining. Anyone who does not meet the requirements of this regulation should be reformed, and safety measures should be taken before the reform.

1.3 Safety "three simultaneities" must be observed when building, expanding and rebuilding oxygen generators. When adopting new technology, new technology and new equipment, there must be safety measures, which shall be implemented after being signed by the person in charge of safety and fire control.

1.4 The construction department shall carry out the construction according to the drawings. If there is any change, it should be approved by the design, construction and production departments.

Important changes must be reported to the superior for approval. 1.5 Establish the responsibility system for production safety.

The factory director, workshop director and foreman are responsible for the safety within their jurisdiction. The mobile department should strengthen management, and the security department is responsible for supervision and inspection.

1.6 workers must receive education in safety production technology and labor discipline. Only by passing the exam can you be allowed to work.

1.7 establish and improve the professional inspection system of safety technology for workshops, industrial structures, pressure vessels and important electromechanical and instrumentation equipment. 1.8 It is forbidden to bring kindling into the "no fire zone" in the factory.

A "Hot Work Permit" must be obtained before each hot work. 1.9 main mechanical and electrical equipment should be put into operation, and it is strictly forbidden to run without listing.

2. General requirements of facilities 2. 1 general layout 2. 1. 1 The site should be located in a clean environment area, and considering the possible impact of the expansion of surrounding enterprises on the safety production of our factory, it should be arranged on the downwind side of the annual minimum frequency wind direction of harmful gases and solid dust emission sources. 2. 1.2 The distance between the air inlet of the air separation unit and harmful gas sources such as acetylene and hydrocarbons should be fully considered according to the environmental quality and the self-purification capacity of the air separation unit, and should not be less than the provisions in Table 1.

2. 1.3 The dust content in the air at the air inlet of the air separation plant shall not be greater than 30mg/m3. 2.2 Category of facilities and fire prevention distance The production category and fire resistance rating of buildings and structures in each workshop and the distance between buildings and structures and other industrial and civil facilities shall comply with the relevant provisions of GBJ 16-87 Code for Fire Prevention of Building Design.

2.2. 1 The production category and minimum fire resistance grade of the workshop shall comply with the provisions in Table 2. 2.2.2 The distance between buildings, structures and facilities and specific places shall not be less than that specified in Table 3.

2.2.3 The fire prevention spacing of related facilities in the following locations is as follows: a. The fire prevention spacing between oxygen (including liquid oxygen) tanks should not be less than the radius of the larger tank in two adjacent tanks; The fire protection distance between hydrogen storage tanks should not be less than the diameter of the larger tank in two adjacent tanks. B the fire protection distance between wet hydrogen storage tanks should not be less than the radius of the larger storage tank in two adjacent storage tanks; The fireproof distance between horizontal hydrogen storage tanks should not be less than 2/3 of the diameter of the larger tank in two adjacent tanks; The fireproof distance between spherical hydrogen tanks should not be less than the diameter of the larger tank in two adjacent tanks; The fireproof distance between horizontal and spherical hydrogen storage tanks and wet hydrogen storage tanks should be determined by a larger value.

C. When the oxygen pressure regulating valve group is provided with a separate valve chamber, the fire prevention interval shall not be less than that specified in Table 3. D the distance between the oxygen buffer, the oxygen storage airbag and the oxygen generator should be determined by considering the process pipeline and convenient operation.

3. Basic requirements for safety protection 3. 1 general protection facilities 3. 1. 1 Fences or fences should be set around the factory. 3. 1.2 Safety signs should be set around all kinds of pressurized gas storage tanks, and separate fences or fences should be set up if necessary.

3. 1.3 The water electrolysis hydrogen production room and storage tank in the plant should be isolated from the surrounding environment, and safety warning signs should be set. 3. 1.4 The access roads, open-air workplaces and patrol inspection equipment in the factory area should have enough lighting lamps, which must comply with the relevant provisions of TJ34-79 Lighting Design Standard for Industrial Enterprises.

3. 1.5 The factory overhead pipeline valves shall be equipped with operating platforms, fences and straight ladders, and their specifications shall comply with the provisions of GB 4053+0-83. 3.2 Fire-fighting facilities 3.2. 1 Fire escape and fire water supply facilities should be set up in the factory according to the relevant provisions of GBJ 16-87 Code for Fire Protection in Building Design.

Fire water supply facilities in cold areas should have anti-freezing measures. According to the needs of fire fighting, other appropriate types and quantities of fire fighting equipment should be provided.

3.2.2 Fire alarm signals and alarm facilities shall be set in the factory. 3.2.3 The configuration of lubricating oil depot shall comply with the relevant provisions of GBJ 16-87 Code for Fire Protection Design of Buildings.

3.3 Electrical Safety 3.3. 1 The power lines and cables in the factory area should be laid underground, and it is forbidden to lay them horizontally with the overhead gas pipeline. Overhead power lines of other enterprises shall not pass over the oxygen plant.

3.3.2 The power supply of the oxygen generator shall comply with the relevant provisions of GBJ52-83 Code for Design of Industrial and Civil Power Supply Systems. 3.3.3 Cable joints and cables in cable trenches shall be coated with fire retardant coatings.

Cable trench should not be connected with other cable trenches, and a fire alarm system should be set up. 3.3.4 The slope at the bottom of the cable trench shall not be less than 5%, and a water collecting well and drainage facilities shall be set at the lowest place.

3.3.5 Substation shall take ventilation and cooling measures as required. 3.3.6 Electrical wiring and equipment must be well insulated.

* * * Live conductors shall be equipped with safety barriers, obvious warning signs and good lighting. 3.3.7 Electrical equipment and devices, metal casings and cables with metal casings must be protected by grounding and zero connection.

3.3.8 The voltage of portable lighting lamps shall not exceed 36V, and the voltage of lamps in metal containers or wet places shall not exceed 12V. Lamps and lanterns in places with explosion danger must be explosion-proof. 3.3.9 In the workplace with explosion and dangerous gas combustion, explosion-proof electrical equipment shall be used according to the requirements of Article 3.4. 1.

3.3. 10 hydrogen production sites should not be equipped with lamps that generate high temperature. 3.3. 1 1 The waist window sealed with double glass on the external wall shall be used for the lighting of the hydrogen bottle warehouse.

3.4 Explosion-proof, lightning protection and anti-static 3.4. 1 Explosion-proof A. The filling platform between oxygen filling bottles should be provided with a reinforced concrete protective wall with a height of not less than 2m. B electrical equipment in explosion and fire danger places must comply with GBJ58-83 code for design of explosion and fire danger.

Hydrogen production room, hydrogen compressor room and hydrogen bottle warehouse belong to Q-2 level, and argon purification is independent.

3. Ask the seniors to teach the common sense of oxygen safety protection.

Common sense of gas safety protection

Common sense of gas safety protection

* Gas hazard in confined space

The danger caused by gas in a confined space is invisible and usually fatal.

Poor ventilation in a confined space will not only lead to the gas inside being unable to support life, but also pose a threat to life. Combustible gas, toxic gas (hydrogen sulfide and carbon monoxide are the two most common toxic gases in a confined space) and lack of oxygen are the most important factors leading to casualties in a confined space. More than 60% of the casualties were caused by trying to rescue the victims who entered the confined space first.

* Hypoxia environment may be life-threatening.

Potential danger of anoxic environment

Concentrated symptoms (VoI%*)

19% minimum allowable value

15- 19% physical strength declines, it is difficult to engage in heavy physical labor, and the coordination of movements is reduced, which is easy to cause coronary heart disease.

Early symptoms of patients with pulmonary and circulatory diseases

12- 14% breathing deepens, the frequency is accelerated, the pulse is accelerated, the motor coordination is further reduced, and the judgment ability is reduced.

10- 12% breathing deepened and accelerated, almost lost his judgment, and his lips turned purple.

8- 10% mental disorder, coma, unconsciousness, vomiting, pale face.

8 minutes after 6-8%, 100% is fatal; 50% fatal after 6 minutes; 4-5 minutes, can be recovered through treatment.

4-6% coma, spasm, slow breathing, died after 40 seconds.

The above data are for reference only. Due to different physical conditions and health levels, the actual situation varies from person to person.

As long as you are exposed to an environment with oxygen content below 12%, you will soon lose consciousness, thus losing the ability to save yourself or help others.

*VoI%- volume percentage, standard atmospheric pressure

* Hydrogen sulfide is fatal

Potential danger of hydrogen sulfide

Concentration (ppm*) Symptom Time

The maximum allowable value of 10 is 8 hours.

50- 100 mild * * * eyes and respiratory tract 1 hour

200-300 severe eye and respiratory tract 1 hour

500-700 coma, death 1/2- 1 hour.

/kloc-coma over 0/000 and death for several minutes.

The above data are for reference only. Due to different physical conditions and health levels, the actual situation varies from person to person.

Low concentration hydrogen sulfide has the smell of rotten eggs, which is easy to detect and can play a certain warning role; However, this warning is unreliable, because the olfactory nerve will soon be paralyzed, thus making the man-made completely lose his sense of danger. In an environment with high concentration of hydrogen sulfide, workers may have fainted before they realized the danger.

*ppm- unit of volume, one millionth by volume.

* carbon monoxide is fatal

Potential danger of carbon monoxide

Concentration (ppm*) Symptom Time

The maximum allowable value of 30 is 8 hours.

200 mild headache, uncomfortable for 3 hours.

400 headache, discomfort for 2 hours

600 headache, discomfort 1 hour

1000-2000 headache and vomiting for 2 hours.

1000-2000 stumbled 1 1/2

1000-2000 Mild palpitation for 30 minutes

2000-2500 coma for 30 minutes

/kloc-4,000 people died within 0/hour.

The above data are for reference only. Due to different physical conditions and health levels, the actual situation varies from person to person.

Carbon monoxide is a colorless and odorless gas, which is easily produced in a closed space. High concentration of carbon monoxide can make people unconscious unconsciously, thus losing their ability to save themselves.

*ppm- concentration unit, one millionth by volume.

4. Rules and regulations of oxygen plant

1. Safety management responsibilities of the person in charge of the safety rules and regulations of the oxygen business unit in the oxygen workshop. The main person in charge of the unit shall take overall leadership responsibility for the safety of the unit.

Two, publicize and implement the principles, policies, laws, regulations and technical specifications of national security management. Three, organize the formulation of the unit's safety management rules and regulations and safety operation procedures.

Four, supervise and inspect the implementation of the safety management system, eliminate hidden dangers in time. Five, responsible for other duties as prescribed by laws and regulations.

Safety management responsibilities of safety officers. Conscientiously implement the national guidelines, policies, laws, regulations and technical specifications for production safety. Two, responsible for handling safety technical problems in business activities.

Three, responsible for inspection and rectification of hidden dangers in business activities. Those that can't be handled should report to the leaders in time.

Four, regular cleaning and inspection of fire fighting equipment, to ensure that fire fighting equipment is in good condition. Five, to participate in accident investigation, to assist the relevant departments to deal with business problems related to safety technology.

Safety management responsibilities of shop assistants. Conscientiously implement the national guidelines, policies, laws, regulations and technical specifications for production safety. Second, abide by the safety management system and rules and regulations, and implement safety operation procedures.

Third, seriously study the knowledge of safety management, so as to achieve four skills: know the nature of goods, know the purpose of goods, know the storage method of goods, and know the use method of goods. Five skills should be achieved: packing goods, handling goods, dealing with goods leakage, saving oneself and asking for help when goods are injured, and using fire-fighting tools.

Four, do a good job of filling in the account of commodity distribution, and register the name and quantity of the goods in and out clearly. Safety management system. All employees must seriously study and implement the Regulations of the State Council on Safety Management of Hazardous Chemicals and the safety management rules and regulations of the unit.

Two, conscientiously implement the relevant laws, regulations, provisions and technical standards of national hazardous chemicals safety management. Three, shall not purchase and operate products produced by enterprises that have not obtained the production license of dangerous chemicals.

Four, seriously implement the dangerous chemicals storage safety management system. Effectively control the storage of hazardous chemicals, and the total storage cannot exceed the critical quantity.

Only a small amount of hazardous chemicals can be stored in the warehouse, and the total storage quality shall not exceed 1 ton. Inventory of a single variety does not exceed 500 kg, and the total mass does not exceed 2 tons. Hazardous chemicals shall not be mixed with taboo items.

Five, conscientiously implement the provisions of the fire safety of dangerous chemicals, operating stores shall not be equipped with living facilities, to set up eye-catching fire signs, smoking and the use of open flames are strictly prohibited, to maintain air circulation in the business premises. Six, contact with dangerous chemicals must wear labor protection articles, wash your hands and face after work, change work clothes.

Handle dangerous chemicals with care. Seven, strengthen the safety inspection work, find hidden dangers of accidents and take corrective measures in time.

Security inspection system. Before the cylinders are put into storage, it is necessary to check whether the cylinder cutting doors and insurance accessories are locked and reliable one by one, so as to prevent gas leakage and accumulation after storage and cause accidents. Second, when selling gas, carefully check whether the color, steel seal mark and annual inspection time mark of the customer's gas cylinders meet the requirements, and refuse to accept the gas cylinders that do not meet the requirements.

Third, clean and inspect the fire-fighting equipment once a month, and repair or replace it in time according to the factory time and maintenance time of the fire-fighting equipment to ensure that all the fire-fighting equipment is always in good condition. Safety operation procedures for gas bottle shaking 1. Smoking is prohibited in reeling places, and any open flame operation is strictly prohibited.

Second, it is forbidden to wear clothes and hand clothes contaminated with oil. Three, it is forbidden to rough loading, especially the solid bottle must be handled with care, and then let go after the cylinder is stable to prevent the accident caused by the collapse of the cylinder.

Fourth, it is forbidden to kick the cylinder to the ground to avoid the cylinder being hit. Fifth, it is forbidden to use electromagnetic lifting equipment to install gas cylinders, and it is forbidden to use bundled gas cylinders. Six, in strict accordance with the types of gas cylinders.

Seven, without inspection cylinders are not allowed to be loaded or put in storage. Eight, long-distance handling of gas cylinders, gas cylinders should be equipped with rubber rings, cutting head shield.

The biggest possible accident in our store is that gas leaks into the fire source and causes a fire. In case of accident, take the following measures: 1. Quickly close the leakage source and cut off the power supply to prevent the leakage gas from contacting the fire source. Second, notify the surrounding people to evacuate in time, and draw a warning zone to eliminate all fire sources.

Third, quickly move flammable items out of the danger zone. Four, such as leakage gas has caught fire, should immediately put out with a fire extinguisher, control the fire source, and strive to nip the fire in the bud.

5. Call the police immediately 1 19, and accurately report the fire location and fire items to the fire brigade. If necessary, send personnel to the intersection to guide the fire truck to quickly enter the fire to extinguish the fire.

Six, if there are casualties, you should call 120 to request emergency support from the hospital. Seven, protect the scene of the fire, so that the accident investigation and handling.

Gas cylinder storage and maintenance system 1. Dissolved acetylene cylinder 1, the fire resistance rating of the storage room should reach Grade II, and it is cool and well ventilated, and the ambient temperature generally does not exceed 40 degrees Celsius; If it exceeds the limit, effective cooling measures should be taken (such as strengthening ventilation with a fan or spraying the cylinder with cold water). Avoid direct sunlight.

2. Ensure that the storage room channel is unobstructed. Dry powder or carbon dioxide fire extinguishers should be installed in the warehouse (carbon tetrachloride fire extinguishers are strictly prohibited).

3. The storage room should be far away from open flames or sparks 15 meters above, and should not be located in the basement. 4, acetylene bottle storage, generally want to keep an upright posture, and should have measures to prevent dumping.

5, should be stored separately from oxygen bottles, chlorine bottles and flammable items. 6. Signs of "acetylene danger" and "no fireworks" should be set in a conspicuous place in the storage room.

Second, the oxygen cylinder 1, the storage room should be cool, dry and well ventilated, the fire resistance rating of the room should reach Grade II, and the ambient temperature generally does not exceed 40 degrees Celsius; If it exceeds the limit, effective cooling measures should be taken (such as strengthening ventilation with a fan or spraying the cylinder with cold water). Avoid direct sunlight.

2. Tighten the bottle cap and put it in order. Leave a passage and repair it well. Generally, vertical discharge is adopted.

If you lie flat, you should prevent tumbling, head to one side, and pile no more than 5 layers. 3, shall not be close to the heat source, and the distance from the open flame should be greater than 10 meters.

4. Acetylene bottles must be stored separately. 5. Do not mix with flammable materials, grease and oily items. I hope the above information is helpful to you.

5. What should I pay attention to in the four seasons air separation oxygen generator?

The influences of four seasons on air separation are mainly ambient temperature and circulating water temperature. These two factors have the greatest influence on Xia Dong air separation, and there are other influences in different regions.

The main points to be noted are as follows: In spring, catkins and fallen leaves will float into the circulating water cooling tower in some places, which will eventually block the inlet filter of the circulating water pump and cause tripping. Summer is mainly due to high ambient temperature and high circulating water temperature. Attention should be paid to the temperature difference and oil temperature of the heat exchanger of each equipment, which may easily cause high-temperature interlock trip.

The failure rate of the corresponding rotating equipment is also the highest in a year, which requires diligent monitoring and inspection. In some places, lightning weather is frequent in summer, so we should pay attention to prevent lightning jump.

In autumn, the air is dry and oxygen production is the key area for fire prevention and explosion prevention. We should pay special attention to the surrounding fallen leaves and clean them in time, and pay attention to monitoring the amount of oxygen emitted to avoid fire. Winter has the lowest environment and water temperature, which is the season with the best air separation efficiency. However, attention should be paid to the anti-freezing of equipment, and the heat tracing facilities should be monitored and inspected frequently.

In particular, some measuring instruments are anti-freezing, so it is easy to stop on business trips. The packing on the circulating water cooling tower is easy to freeze and damage.

In short, it is necessary to supervise the monitoring and equipment maintenance system, and observe and think more attentively to ensure the smooth operation of the equipment.

6. How to use oxygen cylinders safely

Oxygen cylinder is a special high-pressure container for storing and transporting oxygen, which consists of four parts: bottle body, bottle hoop, bottle valve and bottle cap.

There are two shockproof aprons outside the bottle. The bottle body is sky blue, and the word "oxygen" is marked with black paint to distinguish it from other gas cylinders. As an ideal combustion-supporting gas, oxygen is widely used in welding and cutting.

Because oxygen is a mobile container filled with combustion-supporting compressed gas, it has high pressure, frequent loading and unloading and transportation, and the use environment is messy, which often makes the use of oxygen cylinders in an unsafe state. Once an explosion accident happens, it will cause great losses to people's lives and property. 1. There are several hidden dangers in the use and management of oxygen cylinders at present: 1. Filling beyond the inspection period.

According to the Regulations on Gas Cylinder Safety Supervision of the former Ministry of Labor, oxygen cylinders must be inspected once every three years. Its purpose is to discover the safety status of oxygen cylinders in time, discover defects and hidden dangers in time, and avoid accidents.

However, at present, the phenomenon of oxygen cylinder filling beyond the inspection period is serious, which brings serious hidden dangers to safe use. 2. The attachment is damaged or lost.

The accessories of oxygen cylinder include bottle valve, handwheel, bottle cap and shockproof apron. The function of the bottle cap is to prevent the cylinder valve from being damaged or even broken during transportation, so that the gas can be ejected at a high speed, and the cylinder valve and handwheel can be pushed out at a high speed, causing casualties.

The shockproof ring is a protective device to prevent the gas cylinder from being hit, which requires a certain thickness and elasticity. The Regulations on Safety Supervision of Gas Cylinders clearly stipulates that protective caps must be equipped when transporting and loading and unloading gas cylinders.

However, in actual use, few oxygen cylinders have complete fittings, and most of them have no bottle caps and handwheels. The bottle valves are scarred and the valve stems are bent or even severely deformed, which poses a serious threat to safe use. 3. sun exposure.

The Regulations on Safety Supervision of Gas Cylinders stipulates that gas cylinders should be protected from exposure during transportation and use in summer. Because the volume of oxygen cylinder is limited, exposure will increase the temperature of the medium in the bottle, which will lead to a sudden increase in the pressure in the bottle and make the gas cylinder in a dangerous state.

Some users did not take sunshade measures during transportation, and put oxygen cylinders in the sun when using them in summer. Especially in summer, the highway temperature often reaches more than 40 degrees. If the gas cylinders themselves are defective, overfilled or collide with each other, explosion accidents may occur.

4. The safety distance is not enough. The Regulations on Safety Supervision of Gas Cylinders stipulates that oxygen cylinders must be kept away from naked flames 10 meters when used, and it is forbidden to be in the same room with acetylene cylinders when stored.

Many users ignore this requirement. The distance between the oxygen cylinder and the welding point is less than 10 meter, and the oxygen cylinder and the acetylene cylinder are stored in the same room. Once the gas cylinder encounters an open flame and leaks and explodes, it will cause irreparable losses.

5. Rough treatment. In transportation and use, the phenomenon of rough loading and unloading is very common. For example, for short-distance transportation, the oxygen bottle is pushed down hard and then rolled along the ground; When the vehicle is transported, it is not firmly fixed, and the gas cylinders collide with each other and are directly pushed down from the vehicle.

For example, an oxygen factory in a city transported oxygen cylinders to an enterprise by car, and when unloading, the oxygen cylinders were pushed down and hit another cylinder, resulting in two cylinders exploding at the same time. 6. overload.

When the oxygen cylinder is filled, it is overloaded due to violation of operating rules or operational errors, which makes the pressure in the bottle rise and exceed its allowable stress, and finally it will explode due to excessive plastic deformation. Second, the safe use of oxygen cylinders should comply with the following points: In order to ensure the safe use of oxygen cylinders, the state has successively promulgated the Regulations on Safety Supervision of Gas Cylinders, the Regulations on Safety Supervision of Dissolved Acetylene Gas Cylinders, the Provisions on Filling Permanent Gas Cylinders and other laws and standards, which have made scientific and clear provisions on the design, manufacture, inspection, filling and use of oxygen cylinders.

1. The oxygen cylinders used must be produced by the designated national manufacturers. The new bottle must have the certificate of conformity and inspection certificate issued by the boiler and pressure vessel safety supervision department.

2. Oxygen cylinders must be inspected regularly according to regulations. It is forbidden to fill expired gas cylinders.

3. Oxygen cylinders are prohibited from contacting grease. Operators shall not wear overalls with excessive oil pollution, and shall not touch oxygen cylinders and their accessories with their hands, gloves and tools.

4. Oxygen cylinders should be far away from inflammable and explosive materials, open flames and heat sources, and their safe use distance should be above10m, and the distance from acetylene cylinders should not be less than 3m, and they should not be stored in the same room. 5. Use oxygen cylinders in winter. If the bottle valve or pressure reducer is frozen, it can be thawed with boiling water or steam, and baking with open flame is prohibited.

6. Oxygen in the oxygen cylinder cannot be exhausted, and the residual pressure above 0. 1MPa is needed to prevent other gases from flowing back into the bottle. 7. When working in the same place as the welder, in order to prevent the gas cylinder from being charged, an insulating pad should be added at the bottom of the bottle.

The pipeline equipment in contact with gas cylinders shall be equipped with grounding devices to prevent fire and explosion caused by static electricity. When welding in the same place, the oxygen cylinder should be insulated and the gas cylinder should not be conductive.

8. Before installing the pressure reducer, open the bottle valve and blow off the dirt on the bottle mouth. Open the bottle valve slowly, and stand behind the side. 9. During outdoor operation and transportation in summer, oxygen cylinders should be shaded to prevent exposure and avoid gas expansion and overpressure.

10. Check the status of oxygen cylinders at any time, and the shockproof aprons should be intact. In order to protect the bottle valve, the bottle cap must be assembled during transportation and storage.