CASES OF DIAGNOSES AND LIFE EXTENTION MEASURES OF LNG FACILITIES AT TOKYO GAS NEGISHI AND SODEGAURA RECIEVING TERMINALS

摘要

Tokyo Gas Co., Ltd. began receiving shipments of what was Japan's first import of liquefied natural gas (LNG) in 1969, and therefore already has more than 30 years of experience in the operation and maintenance of LNG receiving terminals. Aged LNG-related facilities in these terminals are subject to the occurrence of various phenomena associated with deterioration, and such occurrences are anticipated to increase over the coming years. Meanwhile, there are needs for effective use of aged LNG facilities into the long term while maintaining their reliability, and also for reduction of their operating cost. For that reason, in addition to exhaustive analysis and diagnosis of aged facilities, Tokyo Gas is developing technology and countermeasures for minimizing life cycle costs. This Paper Presents a profile of the countermeasures being taken by Tokyo Gas for facility deterioration by aging, and describes cases of deterioration diagnosis and countermeasure deployment.