[Safety accident] "Ningbo explosion" Septic tank is the culprit!

Ningbo bombing confirmed as septic tank explosion

November 26, Jiangbei District of Ningbo City, Zhejiang Province, Meng Zhuang street north of the original cell block lijiacun peripheral space explosion. As of 20:50 the same day, the event two people were killed and four seriously injured, 15 people were slightly injured, two people lost contact, influence the masses in hospital under observation in another part of the peripheral light.

After the accident, after four rounds of life detection and rescue by the fire department, no trapped persons were found. The technical experts of the Ministry of Public Security and the public security organ of the province together with the technicians of the public security agency of Ningbo City conducted an explosion inspection on the scene and determined that the explosion center was located on the north side of Limeng Community. The original open space septic tank outside Lijia Village, and rule out the possibility of gas explosion pipe. The specific cause of the explosion is still under investigation.

Concerned about the news is not difficult to find, in recent years, in addition to gas, natural gas, hazardous chemicals and other explosive accidents, septic tanks, digesters explosions often also threaten people's lives and property safety.

The septic tank is a kind of treatment facility that uses sedimentation and anaerobic fermentation to remove suspended organic matter in domestic sewage. It belongs to the primary transitional life treatment structure and is indispensable in both urban and rural areas.

What are the hazards of septic tanks?

1 , gas poisoning

The risk of septic tank operation mainly comes from the high concentration of toxic and harmful gases in the pool or extreme lack of oxygen, which can cause poisoning and even sudden death of people entering the space. The sludge deposited in the septic tank is prone to generate toxic and harmful gases such as biogas, carbon dioxide, and hydrogen sulfide.

2. Hypoxic asphyxia death

Confined spaces where air does not circulate are occupied by more important gases (such as carbon dioxide) and have a low oxygen content. After construction workers enter, they can suffocate due to lack of oxygen.

3 , causing a fire or even an explosion

When flammable gas such as methane or biogas exists in a confined space, or is painted, painted, or used with flammable or explosive solvents, it may cause a fire or even an explosion in the event of sparks caused by operations such as welding and cutting.

Septic tank safety protection

1. The personnel entering the septic tank operations should be trained to understand the toxic gases and protection knowledge that can exist in the pool.

2. Before the operation, determine whether toxic gas exists in the septic tank, and whether the oxygen concentration and toxic and harmful gas concentration meet the safety standards. (Generally, portable gas detector can be used to measure)

3. If the concentration exceeds the standard for the first time, fully vent the tank until it is ensured that the operator can perform the operation safely. Personnel entering septic tanks must wear protective equipment such as gas masks, chemical protective clothing, and safety belts, and they are generally equipped with 2 people's leash protection outside the pool . If the conditions do not allow, the septic tank can not be ventilated, you must wear a fully enclosed chemical protective clothing with air respirator and other protection.

4 , the company must be equipped with necessary rescue equipment, such as breathing apparatus, safety ladder, safety rope and other necessary medical emergency kits.

5 , the general job outside the septic tank to be coordinated, is mainly used to match the pool operators, once found emergency rescue.

Finally, Xiao Bian reminded everyone that septic tank operations around should be avoided as far as possible close to the naked flame, it is recommended that the conditions of the community in a timely manner to clean up the septic tank at the same time around the septic tank set up isolation belt, so as to more effectively protect the personal safety of the people.

The information in this article comes from the Internet and was reorganized and edited by China Rescue Equipment Network.