The Dalian explosion occurred at around 10 pm on July 12, 2018. The incident occurred at a chemical plant near the Free Trade Zone in Jinzhou District, Dalian City. After the explosion, surrounding residents heard a huge explosion and saw flames and thick smoke reaching tens of meters high. The accident caused many deaths and dozens of injuries, and also had a serious impact on the surrounding environment and ecology.

Cause of the accident

After preliminary investigation, the cause of the accident was mainly due to the leakage of raw materials in the chemical plant. Coupled with high temperature weather, the raw materials spontaneously ignited, eventually causing an explosion. Specifically, the main causes of the accident are as follows:

1. Leakage of raw materials

When the accident occurred, raw materials leaked in the chemical plant, including propylene and styrene. , ethylene and other flammable and explosive chemicals. Because the leaked raw materials were not handled in time, the raw materials spontaneously ignited at high temperatures, eventually causing an explosion.

2. High temperature weather

When the accident occurred, Dalian City was in hot weather, with the temperature reaching above 35°C. High temperature weather and leakage of raw materials in chemical plants make raw materials more likely to spontaneously ignite, leading to explosions.

3. Safety management is not in place

It is understood that there are certain problems in the safety management of chemical plants, including failure to deal with leaked raw materials in a timely manner and incomplete fire protection facilities. These problems all lead to accidents.

Impact of the accident

The Dalian explosion had a serious impact on the surrounding environment and ecology. The large amount of harmful gases and wastewater produced by the explosion polluted the surrounding air and water quality, and also had a certain impact on local crops and aquatic life. In addition, the accident also had a certain impact on the lives and work of local residents, including road traffic, water and electricity supply, etc.

Lessons learned from the accident

The Dalian explosion has sounded the alarm for us, reminding us to pay attention to chemical safety issues, strengthen safety management, and prevent chemical accidents. Specifically, we can make improvements from the following aspects:

1. Safety management

Chemical plants should establish a complete safety management system and strengthen the storage and management of raw materials. Deal with leaked raw materials in a timely manner to ensure the safety of the chemical production process.

2. Fire-fighting facilities

Chemical plants should be equipped with complete fire-fighting facilities, including fire-fighting equipment, fire-fighting passages, fire-fighting water sources, etc., to ensure that fires or explosions can be controlled in time.

3. Environmental protection

Chemical plants should strengthen the treatment of waste water and waste gas to ensure that they do not cause pollution to the surrounding environment and ecology.