Present state and future prospects in high pressure natural gas transmission in Japan. Y. Okajima. Paper. Proc. Conf., Pipeline technology, Vol. 1, pages 45--56. (See abstract 406 for complete reference).
Natural gas utilization in Japan is reviewed. Consideration is given to the construction and management of pipelines with reference to the current state and problems, and future prospects of Japanese pipeline construction are outlined. The development of technologies to construct next-generation pipelines is described, outline details being given of an ultra-high speed automatic welder; a long-range jacking method for non-open cut pipe laying; the detection of damage to pipe coating; and online monitoring.