When the oxygen burner is opened, fuel should be supplied first and then oxygen is supplied after ignition; when it is closed, fuel supply should be stopped first and then oxygen supply. Wrong
There are no open flames or high-temperature objects in the gas area. Smoking is strictly prohibited in the gas area or place. Wrong
Non-synchronous grid connection of TRT may cause grid voltage oscillation.
When working with gas, iron tools should be coated with a thick layer of lubricating grease.
After passing the air replacement of inert gas for gas cabinet maintenance, the relief pipe or manhole should be left open to prevent overpressure caused by temperature changes. Wrong
It is not advisable to carry out gas pumping and plugging blind panels during thunderstorms. For
C0 gas is a toxic and explosive gas, and its detection alarm value is generally set based on explosive requirements. Wrong
The indoor pipeline in front of the pressurizer uses an internal pressure of 1020mmH20 compared to the outdoor pipeline. The reason is that the indoor pipeline is more important than the outdoor pipeline. Wrong
The length of time that electric current acts on the human body has no impact on the degree of damage to the human body. Wrong
The burning speed of gas is related to the diameter of the pipe. The larger the diameter of the pipe, the greater the flame propagation speed and vice versa. Wrong
Blast furnace gas is a colorless, odorless, toxic combustible gas with a calorific value of 3140-3560KJ/Nm3.
To carry out production and business activities, safety must be the premise, and safety is a prerequisite for production. For
thin oil sealed gas cabinet must ensure that the axial flow fan in the pump station is running and that the C0 content does not exceed the standard. Yes
The gas in the various gas pipelines of the mixing station can be connected to each other. Wrong
When starting a fire on a running gas pipeline, the oxygen content should be no more than 0.8, and the gas pressure should be no less than 20mm water column and less than 300mm water column. For
Occupational disease patients who receive occupational disease treatment or are entitled to social insurance for work-related injuries in accordance with the law cannot also enjoy the right to civil compensation. Wrong
Users should carry out inspection and maintenance in accordance with the relevant contents and requirements in the instructions for use of respiratory protective equipment. Wrong
When performing equipment maintenance and discharging gas, pay attention to the dispersion height, wind direction, air pressure, etc. to avoid large-scale poisoning. Right
The function of the blast furnace pressure reducing valve group is to reduce the pressure of the gas coming out of the blast furnace from the furnace top pressure to the external supply pressure. For inspection and maintenance of gas equipment and hot work, as long as the personnel of the gas protection station confirm it verbally or on-site, the license does not need to be issued. Wrong
The pressurizing station building should be equipped with fire-fighting equipment. Yes
Use fat-free soap or a hydrogen alarm to check for hydrogen leaks. Fire detection is strictly prohibited. Yes
The internal baffle outlet of the compensator should face the direction of the drain point. When performing first aid in a gas accident, the rescuer's own safety must always be considered.
The coke oven gas after secondary purification is non-toxic. Wrong
Coal gasification must have qualified raw materials, suitable gasifying agents, equipment and auxiliary equipment for physical and chemical reactions between raw materials and gasifying agents. When gas pipes, valves and water sealing devices freeze, you can use fire to bake the frozen parts. Yes
Composite gas cylinders for air respirators are formulated with reference to the general technical conditions of national standard gas cylinders.
For those who have stopped breathing due to gas poisoning, they should be rescued immediately at the scene, and the person in charge of the scene should be notified to ask a doctor to come to the scene. They should not be sent directly to the hospital for rescue. After rescue, the doctor will decide to send him to the hospital.
The 02 content in the gas composition of ferroalloy closed electric furnaces should be controlled below 2. Yes
It is not allowed to wear oxygen breathing apparatus to enter the gas fire area for rescue work. Yes
Blast furnace and converter gas are both by-products of smelting in metallurgical plants. The calorific value of BFG is 3140~~3560KJ/N?, and the calorific value of LDG is 7117.56~8373.6KJ/N?. Yes
The supine chest compression method is not suitable for chest trauma and cannot be performed at the same time as extrathoracic heart compression.
Right
In order to facilitate the spontaneous breathing of gas poisoning patients, collar buttons and belts should be unbuttoned and wet clothes should be taken off. In winter or early spring, gas poisoning patients should be properly kept warm to avoid catching cold. Yes
The effective height of the water seal of the drainer before the blast furnace gas comes out of the blast furnace and enters the gas pipe network system is 3M. Yes
Enterprises must set up obvious signs at major hazard sources and ensure smooth escape routes. High-risk areas should be selectively marked according to risk categories and risk levels. Wrong
When you find someone poisoned by gas, you should rescue the person first, and then call the coal prevention station and rescue center. Wrong
When the gas compressor is running, the bearing vibration index exceeds the specified value. As long as the equipment operates without abnormality, it can continue to be used. Wrong
When the valve of the hydrogen equipment is damaged, it is strictly prohibited to replace the valve under pressure. Right
Under special circumstances, sufficient lighting must be provided when blind panel operations are performed at night. Yes
A dry gas cabinet is mainly composed of a circular or polygonal cylindrical outer cylinder, a piston that moves up and down along the cylinder wall, a bottom plate, side plates and a cabinet top plate. Right
Making full use of blast furnace gas is of great significance to reducing energy consumption per ton of steel and saving fuel. When stopping gas in industrial furnaces with forced air supply, all burners should be turned off first and then the blowers should be stopped. The TRT should be equipped with a reliable and tight shaft sealing device.
The full flow nozzle of the drainer should be equipped with a funnel. If the drainer is equipped with a water supply pipe, water should be supplied through the funnel. Yes
Once a fracture is suspected, the injured part should be avoided as much as possible, and the fracture should not be accurately reduced on site. Yes
In dangerous areas, if you have any questions, please leave the gas area and go to a place with fresh air to contact us. For
TRT can be directly decoupled from the power grid during constant reactive power regulation. Wrong
When gas leakage or gas work is discovered, air respirators must be worn for emergency repairs or operations. Do not act recklessly or rely on experience.
Hot work on gas facilities can be divided into replacement hot work and hot work under pressure without replacement. Fireworks and the storage of flammable and explosive items are strictly prohibited in the gas cabinet area. The grounding devices of gas equipment and pipelines must be checked regularly. Ventilation should be strengthened in the coke oven basement and safety exits should be provided at both ends.
The explosion vents of gas equipment and facilities and pipeline explosion vents should not be facing the doors and windows of the building. If they are located next to the stairs or corridors, warning signs must be provided.
In the event of a gas poisoning accident, in emergency or special circumstances, rescuers may use gauze masks or other equipment not suitable for preventing gas poisoning. Wrong
When working in gas facilities, you should carry carbon monoxide and oxygen monitoring devices, take protective measures, and have dedicated personnel to monitor you.
For patients who have been burned by gas flames, the wound surface should not be treated blindly. It should be done by medical staff or under their guidance, and they should be sent to the hospital for diagnosis and treatment in time. Yes
TRT is actually a mechanical energy recycling device. Wrong
Before furnace ignition, shutdown, gas equipment maintenance and fire start, the residual gas or air in the pipeline must be blown out with nitrogen or steam in advance according to regulations, and must pass the test before proceeding.
The unqualified converter gas is discharged to the gas cabinet through the three-way valve. Wrong
As long as the fire application is completed and safety and fire prevention measures are implemented, you can start a fire. Wrong
The calibration cycle of the CO gas detection alarm is 2 years. Wrong
If a special operation worker changes his or her work unit after the expiration of the labor contract, the original work unit shall not detain his or her special operation operation certificate for any reason. Yes
A release point refers to a facility or place where toxic gases may be released from a release source. Yes
Poor ventilation and heat dissipation in the workplace may cause heat stroke. Yes
Coke oven gas pipelines are prone to natural damage due to the presence of sulfides. Yes
When workers enter the hydrogen production area, they must touch the static discharge device to discharge static electricity from their bodies. Yes
Blind plate work requires fire cutting of screws, which must be done under positive pressure. 2 to 3 screws can be cut at the same time and quickly replaced and tightened.
Wrong
The purpose of setting up the gas cabinet release pipe is to release the gas in time when the piston rushes to the top, so as to reduce the damage of the piston to the cabinet. Yes
Before entering the gas cabinet, the C0 concentration must be tested (a) before entering the gas cabinet.
A. s30mg/m3
B. s50mg/m3
C. ≤100mg/m3
Cylindrical thin oil dryer The service life of the sealing rubber of the cabinet should be more than (b) years.
0A, 10
B, 15
C, 20
Regarding the configuration method of mixing and pressurizing the mixing station The correct description is: (c).
0 A. The mixing station is in the front, and the pressurizing station is in the back.
B. The pressurizing station is in the front, and the mixing station is in the back.
C. Several types of gas are first mixed in the mixing station and then enter the pressurizing station to be pressurized and supplied to users
The gas cabinet drainer is mainly used to drain the gas cabinet (C).
A. Water
B. Dirt
C. Water and dirt
When the ferroalloy electric furnace is replaced with waste gas, CO content should be controlled below (B).
A, 0.1
B, 0.08
C, 0.125
The "Safety Production Law" stipulates that production and business units must be employees Provide labor protection supplies that comply with (B).
A. Enterprise standards
B. National standards or industry standards
C. Industry standards or enterprise standards
Gas detection alarm The resolution refers to (A)
A. The minimum value of the measured gas concentration change that the instrument can identify
B. The maximum value of the measured gas concentration change that the instrument can identify
C. The average value of the measured gas concentration change that the instrument can identify
The characteristics of converter gas recovery are (B).
A. Periodicity, continuity
B. Periodicity, discontinuity
C. No periodicity, discontinuity
When the TRT needs to shut down in an emergency, the emergency shut-off valve can cut off the gas within (B) and the turbine will automatically stop
A, 0.5s
B, 1s
C, 1.5s;
D, 2s
The first object of labor protection is protection (A).
A. Workers engaged in production
B. Leaders of enterprises
C. Safety production managers
Hydrogen system replacement is completed , the oxygen or hydrogen content in the system must be analyzed continuously (C) times to pass the test.
A, 1
B, 2
C, 3
The wrong statement about entering the gas cabinet for maintenance work is (B ).
A. Workers entering the gas cabinet are not allowed to carry fire ignition
B. It is safe to operate inside the gas cabinet, so there is no need to carry communication tools
C. Entering the gas cabinet Internal operations should be equipped with air respirators
The "Gas Safety Regulations for Industrial Enterprises" stipulates that the spacing distance between drains is generally (A) m.
A. 100
B. 200 to 250
C. 300 to 350
The economic flow rate of a BFG pipe network with a diameter of 2m is (A)m/s.
A, 12 to 16
B, 11 to 14
C, gt; 14
Carbon fiber composite cylinder at ambient temperature (B) should be able to be used normally.
A, -30°C to 60°C
B, -40°C to 60°C
C, -40°C to 50°C
The normal operation of TRT requires the blast furnace pressure reducing valve group (D)
A. Open all;
B. Can open a small amount;
C. All are closed and all are in the automatic state;
D. All are closed and at least one valve is in the automatic state
Before maintenance of the electrostatic precipitator, (B) should be carried out.
A. Fire permit
B. Maintenance permit
C. Production permit
Gas detector and alarm control The ground resistance of the device should be less than or equal to (C)Q
A, 10
B, 6
C, 4
unit volume The weight of the substance contained is called (A).
A. Severity
B. Density
C. Relative density
(B) Can be used as reliable gas Cut-off device.
A. Gate valve
B. Eye valve
C. Butterfly valve
After a high-voltage electric shock accident, the person who received the electric shock must be disconnected from the power supply. , the following (C) approach is wrong.
A. Notify relevant departments to have a power outage
B. Throw bare metal wires to short-circuit the lines
C. Metal poles open the wires
Assuming that the alarm value of the C0 gas detection alarm is set to 100μmol/mol, then the most suitable range is (A)umol/mol
A, 0-1000
0 B, 0 -5000
C, 0-10000
With gas extraction blind plate, personnel not related to the work should leave the work point (B);
A. 30m
B, 40m
C, 50m
To judge whether severe gas poisoning is real death or suspended animation, the judgment of (C) should prevail.
A. Leader
B. Safety officer
C. Doctor
When working or inspecting in the gas area, portable gas should be brought When operating an alarm device, two or more people should cooperate and be supervised by a dedicated person; reliable (A) tools should be brought for inspection.
A. Communication
B. Maintenance
C. Rescue,
Entering the gas facility for internal maintenance, the CO concentration does not exceed 200mg/ m3 (160ppm) can work (A).
A. 15 to 20min
B. 1h
C. 0.5h
Gas pipes over 100mm catch fire, (B) Cut off the gas immediately to prevent backfire and explosion.
A. Can
B. Cannot
C. Should
The manholes on gas equipment or individual pipe sections are generally not less than (B).
A, 1
B, 2
C, 3
According to the hierarchy of legal status and legal effect, the following rankings are as follows: The correct order is (A).
AConstitution, laws, administrative regulations, local regulations, and administrative regulations
B Constitution, administrative regulations, laws, local regulations, and administrative regulations
C Constitution, laws, administrative regulations, administrative regulations, local regulations
After the TRT generator achieves constant reactive power adjustment, the change in the excitation current is (B).
A. No change
B. Increase or decrease
C. Increase
D. Decrease