Strain behavior of very new high manganese steel for 200, 000 m3 LNG cryogenic storage tank. (15th May 2023)

• Record Type: Journal Article
• Authors: Kim, Jeong Hwan; Lee, Min-Kyung; Jang, Wookil; Lee, Jae-Hun
• Is Part Of: Energy. Volume 271(2023)
• Publication Date: 2023-05-15
• Subjects: High manganese steel -- 200, 000 m3 LNG storage tank -- Strain behavior; Power resources -- Periodicals; Power (Mechanics) -- Periodicals; Energy consumption -- Periodicals; 333.7905
• DOI: 10.1016/j.energy.2023.126889
• Languages: English
• ISSNs: 0360-5442

Abstract

Abstract: The objective of this research is to investigate the actual performance of high manganese (22–26%Mn) steel as a material for LNG storage tanks. The results of joint research with POSCO, POSCO E&C, industry-academia-research committees, and Korea Gas Safety Corporation showed that the new steel is equivalent in performance to traditional 9%Ni steel but has a lower cost. The steel was practically applied in a 200, 000 ㎥ LNG storage tank and the behavior of the inner wall was monitored during LNG import and export. The results showed that Poisson's ratio was measured in the range between 0.079 and 0.089. This study provides evidence that high manganese steel is a viable alternative to traditional 9%Ni steel for LNG storage tanks, providing cost savings without sacrificing performance. Highlights: Developed new method for measuring strain in high-manganese steel storage tanks. Analyzed strain movement in Y and X axis during filling and discharging. Determined Poisson's ratio for high-manganese steel through experiments. Results showed improved accuracy for measuring strain in high-manganese steel. Study provides crucial data for assessing the structural integrity of storage tanks made of high-manganese steel.