Sealing with pressure refers to applying a certain pressure in the pipeline or container, and closing the pipeline or container through the plug or seal to achieve the purpose of sealing, leakage prevention and maintenance. In many industries and fields, sealing with pressure is an important working step to ensure the stability of the working environment and effectively solve different types of problems.

The following are some areas and situations where pressure plugging is used:

1. Oil and gas industry: In oil and gas extraction and processing, the pressure in pipelines and vessels is very high, so pressure plugging is necessary. At wellheads, equipment, pipes, and valves, a pressure plug ensures that pipes and equipment do not leak, prevents injury to people and the environment, and facilitates maintenance and overhaul.

2. Chemical industry: In various chemical production and processing processes, the chemicals and liquids loaded in pipes and containers will have high pressure. Pressure plugging can prevent these liquids from leaking or reducing the production of biochemical reactions, thereby improving the stability and efficiency of the production process.

3. Sewage treatment industry: In the sewage treatment process, a large number of liquids need to be transmitted through pipelines and containers, if not sealed with pressure, it will lead to water leakage, pollution and environmental problems, affecting the sewage treatment effect. Sealing with pressure can reduce system maintenance downtime and effectively ensure the reliability of sewage treatment.

4. Construction and engineering fields: In the field of construction and engineering, pressure sealing is also a common operation, such as the need to use paint spraying, installation of underground pipes and drainage systems in the construction process. The sealing with pressure can avoid liquid or gas leakage, ensure worker and environment stability, and improve worker efficiency.

In summary, pressure plugging is a very important work step in many industries and situations to ensure pipe and equipment reliability, reduce maintenance downtime, and increase production efficiency. The operator must ensure that the protection work is done before the operation, the backup work is done, the plugging work is done, and the correct plugging tools and materials are selected to achieve the best results.

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