Abstract
About the internal check method of a specific outdoors tank, the notification of No.93 was promulgated from the Fire Defense Agency in August, 2000. It was shown that application of new technology is possible about the method of carrying out continuation plates-thickness measurement of the whole bottom plates from on coating and the method of inspecting a welding part from on coating. In our company, the complete inspection equipment and the diagnostic system of tank bottom plates will be developed in 1999, and application of inspection is started from the last fiscal year.
