| 摘要 |
PROBLEM TO BE SOLVED: To provide a leakage detection device capable of surely detecting leakage surely when leakage occurs due to breakage of piping such as oil feeding piping.SOLUTION: The leakage detection device comprises double shell oil feeding piping (3) whose one end is coupled to a submerged pump (P) in an underground tank (1) and whose the other end is coupled to an oil feeding device, which is buried underground, and in which a liquid feeding path (301) is formed on an inner shell (31) and a space part (302) is formed between the inner shell (31) and an outer shell (32), and leakage detection means (6) communicated to the space part (302) is disposed in a space in a pit (9) on the underground tank (1). |
