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东京天然气有限公司生产的城市天然气主要是从液化天然气（ＬＮＧ）中提取的，供给日本东京城区的广大用户。天然气年产量达到６０亿立方米。公司经营着两个总站，分别位于千叶的袖贺浦（Ｓｏｄｅｇａｖｒａ）及金川的根岸（Ｎｅｇｉｓｈｉ）。本文阐述了世界上最大的ＬＮＧ地下储藏罐（容量为２０００００Ｋｌ）的施工技术以及该工程中所采用的最新技术。目前，正在施工中的主体罐位于东京天然气公司的根岸总站。
Natural gas produced by Tokyo Gas Co., Ltd. is mainly extracted from liquefied natural gas (LNG) and supplied to a large number of users in the Tokyo metropolitan area of Japan. The annual output of natural gas reaches 6 billion cubic meters. The company operates two terminal stations located in Sodegavra, Chiba, and Negishi, Jinchuan. This article describes the world’s largest LNG underground storage tank (capacity 200000Kl) construction technology and the latest technology used in the project. At present, the main tank under construction is located at the base station of Tokyo Gas Corporation.