What is the reason for the explosion of Yancheng Xiangshui Chemical Plant?

The accident may be caused by improper operation or pipeline blockage in the production process. Lack of enterprise safety awareness and local supervision.

1. The main person in charge failed the safety knowledge and management ability examination.

2. Only 1 instrument special operators can obtain evidence, which cannot meet the actual needs of safety production.

3. The operating rules of production equipment are not perfect, lacking the operating rules and technical indicators of benzene tank farm; There is no patrol inspection system and no specific requirements for patrol inspection.

4. After the interlock of nitrification device was set, the operation procedures were not revised or changed in time.

5. DCS and SIS pressure transmitters in some dinitration kettles use a pressure point.

6. The benzene tank farm and methanol tank farm, which constitute the secondary major hazard source, are not equipped with tank bottom emergency cut-off valve.

7. Part of the shut-off valve of the hydrogen replenishing pipeline of the dinitration kettle is used as the secondary pipeline, and the interlock has not been put into use.

8. The cabinet room and monitoring room are illegally set in the nitration plant.

9. The responsibility system for production safety in some positions is inconsistent with the actual production situation of the company. For example, the supply department has no requirements for the safety and quality of purchased products.

10. Poor site management and many loopholes; There are insufficient safety warning signs on site, some of which are vague, and there is no weather vane on site.

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12. There are no emergency measures to prevent leakage at the benzene and methanol loading and unloading site, the filling point is close to the pump area, and the on-site eye washer is damaged without water.

13. The employees asked at the scene were not clear about the setting of combustible gas alarm and the emergency treatment measures after the alarm. The combustible gas alarm in nitrification workshop has no on-site lighting alarm function.