Ball lightning caused an explosion in the workshop, lightning protection safety should be paid attention to

Ball thunder?

What is ball thunder?

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Ball Lightning

Rolling mine

It usually occurs during thunderstorms and is a spherical lightning bolt that is nearly spherical and has a diameter ranging from about 15 to 40 cm.

Ball lightning is very dangerous. It can float freely in the air near the ground or go against the wind with the ups and downs of the air current. It can enter the room through open doors and windows, it can even slide on the wires, and sometimes it will explode when it hits an obstacle.

It was this strange ball lightning that caused

Chongqing Qijiang "4.21" Dongxi Chemical Plant Explosion Accident

On the evening of April 21, 2005

Thunder roared in Qijiang County, Chongqing

A huge explosion occurred in the workshop of Dongxi Chemical Plant

After the explosion, many local people gathered outside the factory gate, waiting for the latest news of the accident.

The three-story factory building completely collapsed

The explosion core area was formed

A large conical pit about two meters deep

The corridor about 20 meters away from the workshop has also become a ruin.

Although this situation is rare

However, after entering the flood season, thunderstorms increase

Still brings huge risks to production

Today's Tips

Hazardous chemicals and fireworks companies

Pay special attention to prevent heavy rain and lightning

Come and learn how to prevent it.

Some hazardous chemicals will react when in contact with water, some may explode when exposed to lightning, and some are inherently highly toxic...Safety management must be done well!

01

Properly store highly toxic items such as potassium cyanide and sodium cyanide, and ensure that the monitoring and alarm facilities in packaging and storage places are always in normal and usable condition.

02

Hazardous chemicals that undergo chemical reactions when in contact with water, easily cause fires, explosions, or produce toxic substances, must not be placed in damp, water-permeable warehouses or warehouses with leaking roofs.

03

The storage quantity of flammable, explosive, heat-generating, and toxic items should be reduced reasonably before a thunderstorm.

The most feared risk in thunderstorms is electricity use, so strengthening inspections and timely handling are very important!

01

Carry out a comprehensive inspection of the lightning protection grounding of all equipment, electrical equipment, instruments, etc. to ensure that they are not loose or seriously corroded, and comprehensively test the impact grounding resistance value of the lightning protection grounding.

02

Carry out temperature detection on transformers, cables, cable joints, motors, contact points of electrical components, etc. to prevent overheating; ensure rain and water protection in substations, switch stations, junction boxes, bearings, etc., and carry out inspections after rain; measures should also be taken to prevent small animals from entering substations, basements, switch stations, etc.

03

Electrical accidents are prone to occur during thunderstorms, causing power outages or power failures. Enterprises should formulate and improve emergency plans for large-scale power outages and conduct drills to ensure that they can be properly handled when power outages occur and minimize the impact.

04

Key lightning protection areas such as safety valves and drain ports in production equipment and storage facilities are easily struck by lightning and cause fires. Enterprises should strengthen process control to ensure that safety valves and bursting discs are in good condition and avoid material leakage due to over-temperature and over-pressure.

05

Focus on controlling high-altitude venting points to prevent leaks and lightning fires.

Thunder and lightning always occur with rain, and many items are afraid of waterlogging, so flood prevention must also be carried out simultaneously.

01

Comprehensively check the factory's rainwater and sewage diversion and discharge systems, flood discharge and drainage facilities, drainage ditches, channels, outlets, etc. If there is any blockage, dredge it in time to ensure smooth flow.

02

Strengthen the inspection and maintenance of sewage treatment facilities to ensure that they are always in good operating condition, strengthen the detection of pollution factors in discharged wastewater, and achieve standard emissions.

4

Operational safety should not be neglected at this time!

01

Pay attention to early warning information and strictly follow local guidelines on stopping special operations such as fire operations, operations at heights, temporary power use, lifting and hoisting, and stopping the loading and unloading of hazardous chemicals.

02

Before the thunderstorm arrives, the isolation fences, scaffolding, temporary sheds, lifting tower cranes, etc. at the construction site are fully reinforced.

03

Strengthen the operation and maintenance of production equipment and storage facilities, and promptly replace severely corroded pipes, flanges, equipment, facilities, etc. to prevent severe weather from damaging equipment and facilities and causing the escape, bubbling, dripping, and leakage of hazardous materials.

Prevention does not happen overnight; an effective emergency response demonstrates the results of years of accumulated safety management.

01

Strictly implement the leadership shift system, strengthen inspections of key areas, promptly assess production safety risks, and coordinate the handling of various abnormal and outstanding situations.

02

Develop emergency plans for lightning disasters, carry out targeted emergency drills in a timely manner, and equip with appropriate and effective emergency supplies and equipment.

03

Establish a lightning protection safety responsibility system, clarify management responsibilities, formulate lightning protection safety systems or safety operating procedures and strictly ensure their implementation.

04

Regularly carry out lightning protection knowledge education and skills training for employees, and popularize the treatment methods and measures involved in laws, regulations, standards, systems, etc. related to lightning disaster prevention.

Lightning protection devices must be installed in strict accordance with building standards, a daily management and maintenance work mechanism must be formulated and implemented, and they must be inspected regularly to ensure effective operation.

Comprehensive compilation by the Publicity and Education Center of the Ministry of Emergency Management

Source: China Emergency Management, Guangdong Emergency Management