Roof lifting is one of the most critical stages in LNG storage tank construction. A successful lift demonstrates not only structural precision but also the effectiveness of engineering planning, safety management, and project execution. CIMC ENRIC recently completed this important milestone, laying a solid foundation for the next phase of tank construction.
Every LNG storage tank project consists of multiple critical construction stages, and roof lifting is among the most technically demanding.
The operation requires precise coordination between structural engineering, lifting systems, welding quality, and safety management. Any deviation may affect the overall construction schedule and tank integrity.
The successful completion of this milestone demonstrates the project's steady progress and reflects CIMC ENRIC's experience in delivering large-scale cryogenic storage solutions.
Roof lifting is the process of raising the completed tank roof from ground level to its final design elevation before the construction of the tank shell continues.
This construction method is widely adopted in LNG storage tanks because it improves:
Construction safety
Installation efficiency
Welding quality
Working conditions
It also reduces risks associated with high-altitude assembly.
The roof lifting stage directly affects the quality and schedule of the entire storage tank project.
Successful execution ensures:
Structural alignment
Stable lifting synchronization
Accurate positioning
Reduced construction risks
Improved project efficiency
For large LNG tanks, this milestone is often regarded as one of the key indicators of project management capability.
The whole lifting process took only 2 hours and 48 minutes, the lifting speed was stable and the progress was smooth. It took only 6 months from the start of the concrete pouring of the caps on December 21, 2020 to the completion of this air-lifting. The ethane/ethylene tanks built this time has 3 more wall layers than the propane tanks that were lifted last month, and catch up with the construction period of nearly 20 days!
Different from the construction of several storage tanks with the same calibration volume at the same time in domestic projects, the shape parameters of the storage tanks are often the same. In this project, YPDI combines site conditions, investment analysis and other factors, takes the needs of the owner as the starting point and end point of all work, provides solutions, and designed two "customized specifications" cryogenic storage tanks for the owner: The outer tank of the low-temperature propane storage tank has a diameter of 89.4 meters, a roof height of about 32 meters, and a roof weight of about 1150 tons. It is a veritable "fat boy". While another tank with a height of about 38 meters and a top weight of about 700 tons, it looks more like a beautiful girl. "Non-standard customization" once again embodies YPDI's service concept centered on realizing the maximum value of customers, deep design details and engineering implementation capabilities.
Every roof lifting project involves multiple engineering considerations, including:
Challenge Solution
Structural stability Precise engineering calculations
Lifting synchronization Hydraulic lifting system
Weather conditions Detailed construction planning
Welding quality Multi-stage inspection
Safety management Real-time monitoring
These measures help ensure a smooth and safe lifting operation.
Since YPDI successfully designed and constructed "the first domestic cryogenic ethylene tank" in 1995, it has successively participated in the design and construction of more than ten cryogenic storage tanks. The storage media include LNG, ethylene (ethane), and propylene (propane). , Butane, liquid ammonia, etc.; the form of storage tanks has also developed from the earliest single-containment tanks and metal full-containment tanks to the safest pre-stressed concrete full-containment tanks; the tank capacity also includes from 10,000 cubic meters to 160,000 cubic meters Various specifications. The successful topping of the project further consolidated YPDI's first-line position in petrochemical low-temperature storage and transportation, and urban gas peak shaving.
The successful roof lifting demonstrates CIMC ENRIC's expertise in:
LNG storage tank engineering
EPC project execution
Cryogenic equipment manufacturing
Construction management
Safety control
Quality assurance
With extensive experience in global energy infrastructure projects, CIMC ENRIC continues to deliver reliable storage solutions for LNG, industrial gases, and clean energy applications.
As global demand for LNG infrastructure continues to grow, project execution quality has become increasingly important.
Successful construction milestones such as roof lifting help ensure:
Shorter project schedules
Better construction quality
Lower safety risks
Higher operational reliability
They also demonstrate the engineering capabilities required for large-scale energy infrastructure development.
Following the successful roof lifting, the project will proceed to the next construction stages, including shell erection, internal installation, insulation, and commissioning.
CIMC ENRIC will continue to focus on engineering excellence, quality control, and project safety throughout the remaining construction process.
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