Why do accidents happen in gas generators? What are the accidents?

1. Common accidents and preventive measures:

(1) Air pipe explosion accident

1. Cause of the accident:

1 )? The blower automatically stops or trips, causing an air pipe explosion;

2)? The pressurizer automatically stops or trips, causing an air pipe explosion;

3)? A station-wide power outage causes an air pipe explosion. Explosion:

a. Improper handling of the entire station's power outage

b. Misoperation of the entire station's power outage

c. Failure to handle the entire station's power outage

4) ? The bell valve was not opened when the entire station was shut down, causing an explosion in the air main pipe;

5) ? The blower and pressurizer were stopped but the stoker was not stopped, causing an explosion;

2. Preventive measures:

1) Strengthen technical training to improve employees’ ability to judge accidents and handle accidents;

2) Blower, pressurizer or "double parking" ”, maintain positive pressure operation;

3) ?When the entire station has a power outage or gas outage, operate in strict accordance with the operating procedures;

4) ?When dealing with the entire station accident Under the circumstances, unified command, mutual cooperation, and clear division of labor;

5) Strengthen labor discipline and strictly enforce work positions;

(2) Furnace bottom explosion accident

1. Cause of the accident:

1) ?The flap of the automatic gas furnace was closed, causing the furnace to explode;

2) ?Due to excessive pressure at the two furnaces during gas supply, the furnace exploded Bottom explosion;

3) ?The furnace bottom inlet hole is not sealed tightly, causing a furnace explosion;

4) ?The furnace bottom explosion occurs due to the furnace outlet bell valve falling prematurely during gas supply;

5) ?The interlock fails and the blower or pressurizer trips, causing the furnace bottom to explode;

2. Preventive measures:

1) ?Use automatic When adjusting, the flow rate should not be too small to prevent the gas from flowing back;

2) When the gas supply is stopped, unified command, close cooperation, and clear division of labor are required;

3) Regular inspection of each Are the entrance holes and water seals correct?

4) Regularly check whether each interlock is correct;

(3) Furnace body explosion accident

1 , Cause of the accident:

1) ?The bell valve is blocked, and burning the bell valve causes the furnace body to explode;

2) ?Interlock failure, causing the blower or pressurizer to trip. The furnace body exploded;

3)?The maintenance of the stoker during operation caused the furnace body to explode;

4)?The water jacket of the furnace body exploded due to lack of water in the steam drum;

5) ?The overpressure of the steam drum caused the water jacket to explode;

6) ?The water jacket was replenished too quickly and flowed into the air pipe, causing the furnace body to explode;

7) ?Stop The gas purge caused the furnace body to explode due to the loose water sealing valve;

8) ?Hot standby furnace maintenance caused the furnace body to explode;

9) ?Hot standby furnace startup operation error It may cause the furnace to explode;

2. Preventive measures:

1) When dealing with the clogged bell valve, use steam blowing or use other tools to poke or dig out, and do not use fire;

2) ?Protective measures should be taken when overhauling the equipment during operation, and a fire work ticket must be issued if there is a fire;

3) ?When the steam drum is short of water, the gas should be checked first The bag "calls for water";

4) ? Regularly check whether the pressure gauge of the safety valve of the air bag is normal;

5) ? Replenish water to the air bag slowly, and fill it up to the water level gauge. 1/2-2/3 is appropriate;

6) ?Improve the sense of responsibility of employees and check regularly that all water seals are normal;

7) ?Strengthen technical training and improve employees’ After passing the examination, you will be issued a safe operation certificate before you can operate independently;

8) Strictly implement operating procedures, unified command, clear division of labor, and close cooperation;

9) Regularly check whether the interlocking of each auxiliary equipment is normal;

(4) Electric focus capture operation accidents

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1. Cause of the accident:

1) ? Fire during maintenance caused an explosion in the electric coke trap;

2) ? Failure to purge or purge incompletely, ignition during maintenance Cause an explosion in the electric coke catcher;

3) ?The air supply is not purged or the purge is not thorough, and the electric coke catcher sends electricity to cause an explosion;

4) ?The feeding is unqualified Gas caused an explosion in the electric coke catcher;

5)? Due to interlock failure, the blower tripped, causing an explosion in the electric coke catcher;

2. Preventive measures,

1) ?If there is a fire in the gas pipeline, it must be purged first and a fire work ticket must be issued;

2) ?The electric coke trap must be fully purged before supplying gas;

3) ? When supplying gas, the gas must be tested to be qualified, and the oxygen content does not exceed 0.8;

4) ? The linkage test of the blower and pressurizer must be checked regularly;

(5) Pressurizer explosion accident

1. Cause of the accident:

1). The pressurizer caught fire during maintenance and improper measures were taken, causing an explosion;

2). The pressurizer was not purged and tested after maintenance, causing an explosion;

2. Preventive measures:

1). Fire work during maintenance of the pressurizer must be fully purged and a hot work ticket must be issued;

2). After the pressurizer is overhauled and purged, it can be tested before running;

(6) Coal storage hopper explosion accident

1. Cause of the accident:

1) ． An explosion occurred due to a fire in the maintenance stoker;

2). The stoker is jammed, causing an explosion if not handled properly;

2. Preventive measures:

1). Safety and fire prevention measures must be taken during fire maintenance;

2). When dealing with stoker jams, the top and bottom should cooperate closely, and the coal valve should be opened slowly;

2. Fire accident case analysis

(1) Coal hopper fire accident

1. Cause of the accident:

1). Sparks fell into the coal hopper during maintenance of the coal bunker;

2). The introduction of other fire sources (such as pipes and burning objects);

3). Bringing fire sources into the coal conveyor belt during maintenance;

2. Preventive measures:

1). During maintenance work or other work, safety measures should be taken to prevent sparks from falling into the coal hopper;

2). Smoking is prohibited in the coal conveyor belt;

3). Improve personnel quality and enhance fire prevention awareness;

(2) Fire accident in outdoor purification area

1. Cause of the accident:

1) The discharge pipe at the outlet of the furnace was Lightning strikes and catches fire;

2). The cyclone dust collector caught fire;

3). Electric coke capture and power transmission were not purged, causing a fire;

4). Fires caused by tar pools igniting;

5). Overhauling purification equipment caused a fire;

6). Fire in cable trench causes fire;

7). Fires caused by the introduction of other external fire sources;

2. Preventive measures:

1). Lightning rods should be regularly inspected for preventive inspections;

2). During equipment fire inspection, fire safety work should be done and a fire work ticket should be issued;

3). All fire-fighting facilities and equipment must be complete (fire hydrants, fire extinguishers, etc.);

4. Conduct regular fire safety inspections to thoroughly eliminate fire hazards;

5). The oxygen content in the gas must be tested before electric coke capture and power transmission;

6). Smoking is prohibited at gas stations, and safety measures must be taken when using open flame equipment;

III. Poisoning Accident Case Analysis

(1) Poisoning Accident in the Main Plant

1. Accident Reasons:

1). The gas pipeline leaked and was not discovered in time;

2). Misoperation caused gas pipeline rupture;

3). The water seal of the bell valve is damaged;

4). The maintenance of the furnace was not carried out according to the operating procedures;

2. Preventive measures:

1). Strengthen training, improve the technical level of employees, and strictly adhere to their posts;

2)

． Check in time that all water seals are normal;

3). Wear protective equipment and operate in accordance with the procedures;

(2) Poisoning in the coal conveying corridor and coal storage hopper area

1. Cause of the accident:

1). A single person was poisoned while working in a coal storage hopper;

2). Accidentally fell into the coal storage hopper and was poisoned;

3). Poisoning may occur if you rest near the coal conveying channel or factory building;

2. Preventive measures:

1). When working in the coal storage hopper, a special person must supervise you;

2). When entering the coal storage hopper for work, the gas must be purged thoroughly;

3). It is strictly prohibited to rest in or near the gas channel;

(3) Poisoning in the pressurizer room

1. Cause of the accident:

1). The sealing ring of the pressurizer is leaking;

2). The instrument pipe joint of the pressurizer fell off

3). Gas leaked out when tar was discharged from the bottom of the press;

4). Gas leakage occurred when repairing the inlet and outlet doors of the pressurizer;

2. Preventive measures:

1). It is prohibited to rest between pressurizers;

2). Regular inspections.

Make sure the equipment is normal;

3). Alarm facilities and emergency ventilation devices must be installed indoors;

4). Safety protection measures must be taken when inspecting and repairing the pressurizer;

(5) Poisoning accidents in purification equipment

1. Causes of the accident:

1) Poisoning caused by failure to purge or incomplete purging of the cyclone dust collector and electric intercooler during maintenance;

2 ) ?Poisoning due to improper safety measures when studying purification equipment;

3) ?Resting near the purification equipment, poisoning due to gas leakage;

4) ?Purification equipment released Too low, leading to poisoning;

2. Preventive measures;

1) Before entering the purification equipment to work, it should be purged first and provided with special supervision;

2) ?When overhauling and purifying equipment, you must apply for a work ticket and take safety measures;

3) ?All personnel are prohibited from resting near the equipment;

4) ?Wear protective clothing while working Use protective equipment to prevent poisoning;

5) Strengthen safety education and improve employees’ safety awareness;

IV. Causes of equipment accidents

(1) Water jacket burnout accident

1. Cause of the accident;

1) Water jacket scaling due to long-term use of tap water;

2) Softening The water supply was interrupted and was not discovered in time;

3) ?The water level gauge failed, causing false water levels;

2. Preventive measures:

1) ?If tap water is used for a long time , it is necessary to remove scale regularly;

2) ? Ensure sufficient softened water;

3) ? Conduct inspections carefully to detect problems in time;

(2) The fire layer dropped and burned the grate, furnace bottom and furnace skirt

1. Cause of the accident:

1) ?Poor control at the furnace level caused the fire layer to drop;

2) ?The equipment is defective and the ash tray is leaking;

3) ?The water in the ash tray is cut off and was not discovered in time;

4) ?Excessive ash removal;

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2. Preventive measures:

1) ?The furnace operator must control the level inside the furnace to avoid ash slant;

2) ?Make sure the ash tray is There is sufficient sealing water inside;

3) ? Remove ash appropriately according to the level in the furnace;

(3) Blower and pressurizer bearing damage accidents

1. Cause of the accident:

1) ?The center of the fan was incorrect after overhaul, causing bearing damage;

2) ?The vibration of the fan bearing caused bearing damage;

3) ?Lack of oil in the bearings leads to bearing damage;

2. Preventive measures:

1) ?After the fan is overhauled, the center should be rechecked;

2) ?Regularly Refuel the bearings;

3) Inspect equipment regularly and switch if problems are found

(4) Factory pipe network equipment accidents

1. Cause of the accident:

1) ?The natural rupture of the gas pipeline caused a gas outage in the entire plant;

2) ?The drop of the gas pipeline caused weld cracking;

3) ? The gas pipeline was cracked during the operation of the dump truck;

2. Preventive measures:

1) ? Regularly check the pipeline explosion prevention;

2) ? Gas pipeline The bracket should be strong;