China National Offshore Oil Corporation (CNOOC) has put into use the second phase of its Jinwan “Green Energy Port” project in Zhuhai, Guangdong Province. The project is the largest liquefied natural gas (LNG) storage and transportation hub in South China.
Workers conduct precision checks inside the dome of an LNG storage tank ahead of the roof lifting operation at CNOOC’s Jinwan “Green Energy Port” project. [Photo/sasac.gov.cn]
With the commissioning of phase II, the project is expected to handle an annual natural gas throughput of 7 million tons, with total storage capacity reaching 1.098 billion cubic meters. It is sufficient to meet the monthly gas demand for 35 million households.
The project will significantly strengthen the LNG supply of the Guangdong-Hong Kong-Macao Great Bay Area and South China, providing strong support for regional high-quality economic development and the transition to a green, low-carbon energy structure.
Panoramic view of the Jinwan “Green Energy Port” project. [Photo/sasac.gov.cn]
The phase II of the project contains five 270,000-cubic-meter LNG storage tanks. Construction faced a range of complex scheduling challenges, including the dynamic coordination of multiple work sequences and overlapping high-risk construction interfaces.
Workers inspect the instrument platform atop an LNG storage tank. [Photo/sasac.gov.cn]
The construction team used a digital twin model to track, simulate and forecast the progress of each LNG storage tank in real time, enabling dynamic optimization of the construction schedule. The team also applied an advanced all-position automatic welding technology for 9 percent nickel steel inner tanks, setting record-breaking installation times for both the outer tank standard courses and the inner tanks of the 270,000-cubic-meter LNG storage tanks.
Workers carry out welding work on the roof girders of an LNG storage tank at the Jinwan “Green Energy Port” Phase II project. [Photo/sasac.gov.cn]
The project uses CNOOC’s proprietary CGTank® large-scale LNG storage tank technology. Twelve innovative achievements have filled domestic gaps, marking that China has reached world-leading levels in core technologies for 270,000-cubic-meter ultra-large, low-temperature, full-containment LNG storage tanks.
Large lifting equipment works in tandem to hoist tower cranes into position at the Jinwan “Green Energy Port” Phase II project. [Photo/sasac.gov.cn]
(Executive editor Zuo Shihan)
