On June 30, 2025, the Zhejiang Zhoushan Liquefied Natural Gas (LNG) Receiving and Bunkering Terminal Phase III LNG Storage Tank and Supporting Facilities Project (hereinafter referred to as the "ENN Zhoushan LNG Receiving and Refueling Terminal Project Phase III"), which was constructed under the EPC contracting of Xindi Energy Engineering Technology Co., Ltd., achieved the mechanical completion ahead of the contracted schedule. The milestone signifies the official commencement of system commissioning of the tank farm and laying a solid foundation for subsequent comprehensive production and operation.
The ENN Zhoushan LNG Receiving Terminal, the first large-scale LNG receiving terminal developed by a private enterprise approved by the National Energy Administration, is a key project of the 13th and 14th Five Year Plans of the country and Zhejiang Province. The third phase of the project will build four LNG storage tanks with a capacity of 220,000 cubic meters for each on the reserved land of the first and second phases. It is planned to be put into operation in August 2025, further enhancing the resource undertaking and turnover capacity of the ENN Zhoushan LNG Receiving Terminal. The processing capacity is expected to exceed 10 million tons per year, adding strong impetus to the energy supply of the Yangtze River Delta region.
Since the commencement of the construction of the third phase of the ENN Zhoushan LNG Receiving and Refueling Terminal Project, the project management team has closely focused on customer needs, using the engineering digitalization platform as the key driver, and focused on the refined management of safety, quality, and progress in the three key links of the project. During the construction process, they overcame unfavorable factors such as complicated geological conditions, variable natural weather, and severe risks of work at height, and successfully completed major milestones including pile foundation construction, tank foundation concrete pouring, dome pneumatic lifting, inner tank installation, hydrostatic testing, and equipment pipeline installation, achieving "three lifts at the same time" and creating a new record for simultaneous pneumatic lifting of large LNG tank domes at the same time in China. To date, nearly 5 million safe working hours have been accumulated.
As a key part of LNG receiving terminal construction, LNG storage tanks have a very complex design and construction process, which requires extremely high quality and technical requirements for construction. During the construction process, the project team continuously improved the construction quality through measures such as strengthening material entry acceptance, increasing the frequency of process self inspection and inspection, and conducting regular quality warning and correction. Four storage tanks have taken a total of 108,884 radiographic photos, with a first-time pass rate of 99.16%. Among them, 70,113 pieces of radiographic photos of 9% Ni steel wall panels were taken inside the LNG storage tank, with a one-time welding qualification rate of 99.08%. 7,542 pieces of photos for LNG storage tank connecting pipes were taken, with a one-time qualification rate of 99.40%. 31,229 pieces of photos for tank roof pipelines were taken, with a one-time qualification rate of 99.27%, far exceeding the original project quality target.
Next, under the premise of strictly adhering to the safety and quality standards, Xindi Energy Engineering will continue to promote the completion of the third phase of the ENN Zhoushan LNG receiving and refueling terminal project, and make every effort to sprint towards the milestone of tank liquid influx to ensure the early commissioning and operational efficiency, contributing to the optimization and upgrading of the energy structure in East China and further ensuring the gas demand in the Yangtze River Delta region.
