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Recently, the Shandong Zhenghe Project Diesel Hydrotreating Device Hydrogen Pipeline Material Upgrade Inspection and Modification Project, which was undertaken by the Fourth Construction Company, was successfully started and produced qualified products.
It was awarded the "Excellent Construction Unit for Annual Inspection and Maintenance" issued by the owner.
"Honorary title
.
This inspection and modification focused on the replacement of pipelines.
Due to the dense pipe corridors in the device and the small height difference between the pipe corridors, the distance between the crane stations is too large, making the removal and installation operations difficult
.
The project department formulates construction plans and continuously optimizes construction organization and specific measures
This construction pipeline material design temperature and pressure are high and the wall thickness grade is large, and the welding quality requirements are high.
The project department cooperates with automatic welding and manual welding, and arranges quality inspectors for daily inspections.
The welding adopts multi-layer and multi-pass welding.
Strictly control the welding temperature and interlayer temperature
.
At the same time, the heat treatment operators are required to strictly follow the requirements of the heat treatment process card to increase the temperature, maintain the temperature, and reduce the temperature to avoid reheat cracks, and lay a solid foundation for the completion of the pipeline installation tasks with high quality and high standards
The project department carried out careful deployment and detailed planning of pipeline prefabrication work, coordinated the allocation of resources, and strictly controlled various processes such as blanking, assembly, welding, finished product protection and pipe section delivery.
During the construction process, the project department focused on the removal of high-pressure pipelines and replaced them with the main construction line, organized safety technical briefings every day, compiled special construction technical plans, studied and optimized the dismantling plan and on-site field surveys for many times, carefully investigated hidden dangers, and completed high-quality and efficient completion Various construction tasks such as pipeline removal and installation
In addition, the project department carried out labor competitions.
(Fu Qiang Zhongkai)
