The petrochemical industry in China emerged in the 1960s currently has over a hundred large medium-sized petrochemical enterprises located throughout the country. Every year, they provide the country with a large amount of petroleum products, chemical supplies, some basic chemical raw materials, making great contributions to changing China's livelihood economy.

Fire explosion accidents caused by unsafe cutting operation in the petrochemical industry have also occurred frequently, causing serious losses to the lives property safety of the national people. Due to the particularity of the petrochemical industry, the working environment equipment require strict management control. The operating medium of the equipment is flammable explosive substances, so work safety has become the biggest focus of attention. Especially during the dismantling construction process of waste chemical plants, attention should be paid to tank maintenance, pipeline cutting, construction safety. The disposal of aboned storage tanks pipeline openings shall be carried out in accordance with relevant stards.

In the design of chemical equipment dismantling projects, due to the vast differences in chemical process methods, the chemical properties of chemical intermediate products are extremely unstable, with characteristics of flammability, explosiveness, easy poisoning, strong corrosiveness, posing high risks making construction difficult. Usually, a project team with rich construction experience strong professional technical personnel is organized to undertake the construction management work of the project. However, the characteristics of using water cutting (no sparks, no static electricity, no high temperature) can eliminate the hidden danger of open flames ensure safe efficient cutting. Aboned storage tanks pipelines should be cut with water comply with relevant regulations. When cutting, the cutting angle should be controlled to prevent accidents. Before cutting processing chemical pipelines, it is necessary to close the relevant valves to prevent chemical splashing injury to workers.