Sealing with pressure is an important engineering operation to ensure the reliability of the pipeline system. In the construction process, it must be strictly operated in accordance with the operating points to avoid potential hidden dangers. This paper will introduce the operation key points of pressure sealing construction in detail to help readers better understand and master this technology.

First of all, before the construction of sealing with pressure, it is necessary to carry out detailed scheme design and construction preparation. The scheme design should include plugging location, plugging method, plugging material selection and so on. Construction preparation includes cleaning the construction site and preparing necessary tools and equipment. The completion of these works is the basis to ensure the smooth progress of construction.

Secondly, in the process of sealing with pressure, the stability measures before sealing must be carefully implemented. Construction personnel must wear personal protective equipment that meets the requirements, including safety hats, protective glasses, ear plugs, etc. The construction site must be set up obvious warning signs, and maintain a good ventilation environment. In addition, the construction personnel should also receive the necessary training to understand the risks of the closure operation and emergency treatment methods, and be prepared to respond to emergencies.

Third, during the construction of sealing with pressure, the appropriate sealing method and material must be selected. The sealing method can be selected according to the characteristics of the pipeline and construction requirements. The common sealing methods include mechanical sealing, tape sealing, expansion sealing and so on. The selection of sealing materials should meet the relevant standards and requirements to ensure that it has good sealing and high pressure resistance.

Fourth, in the construction operation of sealing with pressure, the construction must be carried out in strict accordance with the operating procedures. Before construction, the integrity and applicability of the plugging equipment and materials should be carefully checked. The construction personnel should accurately determine the sealing position and sealing force according to the operation points, and carry out the necessary marking on the construction site. During the sealing process, the construction intensity and construction time should be strictly controlled to ensure the reliability of the sealing effect.

Fifth, after the construction of sealing with pressure, relevant testing and detection work must be carried out. After the construction, the sealing test and pressure test should be carried out to ensure the stability and reliability of the sealing system. At the same time, the construction process should be recorded and summarized to provide reference and improvement basis for future construction.

In short, the construction of sealing with pressure is a complex and important engineering operation, which needs to be carried out in strict accordance with the main points of operation, reasonable scheme design, strict stability measures, appropriate sealing methods and materials and standardized construction operations to ensure the quality and stability of sealing with pressure construction. It is hoped that through the introduction of this paper, readers can better understand and master the key points of operation of sealing construction with pressure, and be applied in practical work.