The pressure sealing of the pipeline refers to the sealing of the pipeline when there is pressure inside the pipeline. In this case, the sealing operation is extremely dangerous, and the pipeline sealing process with pressure must be strictly described in detail.

1. Preliminary preparation

In the pipeline pressure sealing, it is necessary to carry out adequate preparatory work, including the following aspects:

1. Determine the nature of the pipeline: Before sealing with pressure, it is necessary to confirm the nature of the pipeline, including the material, size and pressure level of the pipeline. Only by clarifying these basic information can you choose the correct plugging method and tool.

2. Develop a detailed plugging plan: After determining the nature of the pipeline, it is necessary to develop a detailed plugging plan, including the plugging location, plugging method, operating steps, etc. The plugging plan must be formulated according to the actual situation and subject to technical review.

3. Prepare necessary tools and materials: The sealing tools and materials should be prepared according to the sealing position and method determined in the sealing plan. Common plugging tools and materials include plugging devices, checks, isolation plates, temporary pipes, etc.

4. Determine the whole method: When the pipeline is sealed with pressure, it is necessary to select trained and experienced personnel to operate. At the same time, detailed measures need to be developed to ensure the safety of personnel during the closure process.

2. Sealing operation process

Preparatory work

Before starting the plug, the medium on the pipe must be drained to ensure that there is no pressure inside the pipe. At the same time, it is also necessary to clean and inspect the pipeline to ensure that the surface of the pipeline is clean and non-destructive.

2. Install a plug

Select the appropriate occluder for installation according to the location and method specified in the occluder plan. When installing a sealer, follow the instructions and ensure that the position, direction, and sealing performance of the sealer meet the requirements.

3. Perform a plugging test

After the plug is installed, a plug test is required to confirm whether the plug is effectively plugging the pipeline. When testing, it is necessary to use technical test tools, and adjust and correct according to the results.

4. Isolate pipes

During the plugging operation, the pipes must be isolated from other systems to avoid adverse impact on other systems. It is usually carried out by means of isolation plate temporary pipe. 5. Restore the pipe

After plugging the pipeline, you need to restore the pipeline by including the plugging device, restoring the pipeline running, and emptying the gas in the pipeline until the pipeline is restored to normal operation

Third, stable preparation, the development of a detailed plugging plan, and through technical review.

2. It must be operated by personnel with advanced training and rich experience.

During the plugging test, the technical test tools must be used for testing, and adjustments and corrections should be made according to the test results.

4. During the plugging operation, ensure that the pipes are isolated from other systems to avoid adverse impact on other systems.

5. Must comply with safety procedures and operating procedures to ensure the safety of the operation process.

In short, to seal the pipeline with pressure, it is necessary to carry out adequate preparatory work, develop a detailed plugging plan, and select personnel with technical training and rich experience to operate. In the operation process, it is also necessary to strictly abide by the stability procedures and operating procedures to ensure the safety of personnel in the operation process.