Abstract: During the installation of petrochemical pipelines, various problems are often encountered. If you want to solve these problems well, you need to have rich practical experience, and the information in related books is difficult to solve the problems in the installation process. If the problems encountered in petrochemical pipeline installation cannot be solved in time, the engineering quality cannot be guaranteed. This paper analyzes and studies the common problems in petrochemical pipeline installation, and puts forward effective methods to control the quality of petrochemical pipeline, hoping to help solve the common problems in petrochemical pipeline installation and effectively control the quality of petrochemical pipeline.
Keywords: petrochemical industry; Pipeline installation; Frequently asked questions; quality management
Petrochemical products have special properties. Petrochemical pipelines usually operate under high temperature and high pressure, and the operating environment is mostly flammable and explosive. This puts forward higher requirements for the installation quality of petrochemical pipelines.
1 common problems in petrochemical pipeline installation
1. 1 Problems in petrochemical pipeline production
The manufacture of petrochemical pipeline section is an indispensable link in petrochemical pipeline installation, which directly affects the quality of petrochemical pipeline. However, some related construction enterprises did not prefabricate petrochemical segments strictly according to the drawings in the actual production process, which led to the problem that petrochemical segments did not conform to the drawings. Some related construction enterprises directly installed petrochemical segments without strict inspection, which led to certain safety hazards of petrochemical segments.
1.2 Problems in the welding of petrochemical pipelines
The welding of petrochemical pipelines has great influence on the quality and service life of pipelines. However, some petrochemical pipeline welding construction personnel pay insufficient attention to the petrochemical pipeline welding construction, and their construction attitude is not serious, so they can't carry out the construction in strict accordance with the relevant regulations of petrochemical pipeline welding construction. Some petrochemical pipeline welders did not accurately mark the positions of butt joints in turn. Moreover, after the welding construction of petrochemical pipeline was completed, there was no strict inspection, which led to the failure to guarantee the quality of petrochemical pipeline.
1.3 Problems existing in anticorrosion of petrochemical pipelines
Anticorrosion of petrochemical pipeline is the work that needs to be done after the completion of pressure test of petrochemical pipeline. The production and operation environment of petrochemical pipeline is special. Because petrochemical pipelines are usually produced and operated in acidic or alkaline environment, petrochemical pipelines are extremely vulnerable to corrosion in acidic or alkaline environment. Therefore, it is necessary to carry out anti-corrosion treatment for petrochemical pipelines. However, in the anti-corrosion work of petrochemical pipeline, the construction personnel did not carry out sand blasting and rust removal treatment on the petrochemical pipeline, which easily rusted the petrochemical pipeline again, thus failing to guarantee the quality of the petrochemical pipeline.
2 Effective ways to control the quality of petrochemical pipelines
2. 1 Quality Control of Sectional Manufacturing of Petrochemical Pipelines
Relevant construction enterprises should manufacture and install petrochemical pipeline segments in strict accordance with the drawings of petrochemical pipeline segments in order to eliminate potential safety hazards in the manufacturing process of petrochemical pipeline segments. Moreover, after the prefabrication of petrochemical pipeline segments is completed, strict and meticulous inspection must be carried out to check whether the quality of petrochemical pipeline segments meets the standards and meets the requirements of petrochemical pipeline segment drawings, and whether the appearance and technical level of petrochemical pipeline segments are defective. Then fill in the quality inspection report carefully according to the actual situation, and then the construction supervision will conduct further sampling inspection. Only after passing the inspection can the petrochemical pipe section be installed, thus effectively controlling the petrochemical pipe section.
2.2 Petrochemical pipeline welding quality control
In order to effectively control the welding quality of petrochemical pipelines, we must first strengthen the training of petrochemical pipeline welding construction personnel, so that petrochemical pipeline welding construction personnel can strictly abide by the relevant provisions of petrochemical pipeline welding construction, and make clear the dangers of construction in violation of relevant regulations. In the process of training petrochemical pipeline welding constructors, we should make petrochemical pipeline welding constructors understand all kinds of welding technical problems that may occur in welding construction, and ask them to mark each welding joint during welding to clarify its accurate position. Improve the welding technical ability of petrochemical pipeline welding construction personnel through continuous training. In addition, after the completion of welding construction, strict inspection should be carried out in time to effectively control the welding quality of petrochemical pipelines.
2.3 Petrochemical pipeline anticorrosion quality control
In the anti-corrosion work of petrochemical pipelines, the above-ground petrochemical pipelines are usually treated with anti-corrosion paint and zinc plating, while the underground petrochemical pipelines are usually treated with petroleum asphalt. However, such anti-corrosion treatment has caused certain pollution to the environment and should be improved. For example, epoxy coal tar pitch is used for anticorrosion treatment of petrochemical pipelines, which is convenient and rapid and has no harm to the environment. In addition, before the anticorrosion work of petrochemical pipeline, the petrochemical pipeline should be derusted by sandblasting to avoid the secondary rust of petrochemical pipeline, and the anticorrosion treatment can only be carried out after the surface is dry, thus effectively controlling the anticorrosion quality of petrochemical pipeline.
3 Conclusion
To sum up, some unexpected problems often occur during the installation of petrochemical pipelines, and relevant construction personnel should analyze and solve the problems in time, so as to effectively control the quality of petrochemical pipelines.
refer to
[1] cleaner talent. Analysis of welding technology and quality control measures for petrochemical pipelines [J]. China Petrochemical Standards and Quality, 2016,36 (20):14-15.
[2] Xie Shibiao. Analysis of problems in petrochemical pipeline design [J]. Petrochemical Technology, 2016,23 (6): 294271.
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