Pipeline pressure sealing is a common industrial stability operation, which can effectively prevent pipeline leakage or accidents. There are certain processes and standard operating procedures that need to be followed to ensure stable operation and minimize losses when performing a pipeline pressure plug. The following is the process of sealing the pipeline with pressure.

1. Preparation

Before sealing the pipeline with pressure, it is necessary to carry out detailed preparation work, including the following aspects:

1. Accurately assess the risk of pipeline blockage

Before sealing the pipeline with pressure, it is necessary to evaluate the state, pressure and medium of the pipeline to determine the difficulty and risk level of sealing, so as to select the appropriate sealing method and sealing equipment.

2. Develop a detailed plugging plan

According to the characteristics of the pipeline and the requirements of plugging, a detailed plugging scheme is formulated, including the selection of plugging equipment, the determination of plugging location, and the arrangement of plugging personnel.

3. Prepare necessary plugging devices and tools

Prepare necessary plugging devices and tools based on the plugging solution requirements, including plugging plates, balls, tape, pressure gauges, and plugging tools.

4. Conduct training and guidance for plugging personnel

Before plugging a pipeline with pressure, train and guide the personnel involved in the plugging work to understand the principles, methods, and precautions of plugging, and ensure that the operators have the necessary skills and stability awareness.

2. Plugging operation

After the preparation work is completed, the pipeline is sealed with pressure. The specific operation process is as follows:

1. Determine the sealing position and method

The sealing position and sealing method are determined according to the requirements of the sealing scheme. Sealing plate, sealing ball, sealing belt and other methods can be used to seal.

2. Install plugging devices

Install necessary plugging devices, including plugging plates, plugging balls, and plugging tapes, based on the plugging solution requirements. During installation, attention should be paid to the sealing and fixing of the sealing equipment to ensure that it can withstand the pressure in the pipeline.

3. Check the pressure and tightness

After the sealing device is installed, check the pressure and tightness. Use a pressure gauge to check the pressure inside the pipe to ensure that the plugging device can withstand the pressure inside the pipe. Use a leak detection agent to check the plugging location to ensure the tightness of the plugging device.

4. Relieve pressure and clean up

After confirming that the pressure and sealing performance of the sealing device meet the requirements, relieve the pressure and clean up the device. First slowly empty the medium in the pipeline, then gradually reduce the pressure in the pipeline, and finally completely remove the pressure in the pipeline. In the process of pressure relief, it is necessary to pay attention to safety to prevent the sudden failure of the sealing equipment or the residual media in the pipeline.

5. Restore the pipeline

After the pipeline is sealed with pressure, necessary pipeline inspection and maintenance work need to be performed. If there is a fault or damage in the pipe, it needs to be repaired and replaced. After confirming the normal operation of the pipeline, the use of the pipeline can be resumed.

Third, stability measures

When sealing pipelines with pressure, you need to follow certain stability measures to ensure the stability of personnel and equipment. Specific stabilization measures include the following aspects:

1. Wear necessary personal protective equipment

When sealing pipelines with pressure, wear necessary personal protective equipment, including safety hats, protective gloves, and protective clothing.

2. Set up stable warning lines and signs

During the operation of pipeline sealing with pressure, stable warning lines and signs need to be set up to remind personnel of the danger and prevent irrelevant personnel from straying into the operation area.

3. Keep in touch

When the pipeline is sealed with pressure, it is necessary to maintain communication to handle emergencies in a timely manner.

4. Strictly implement the operating procedures

When sealing pipelines with pressure, strictly follow the operating procedures and standard operating procedures to ensure stable and efficient operation.

5. Prepare for accidents

When performing pipeline sealing operations with pressure, it is necessary to make emergency preparations for accidents, formulate emergency plans in advance, and clarify responsibilities and measures so that emergencies can be handled quickly and effectively.

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