| 摘要 |
PCT No. PCT/EP95/03238 Sec. 371 Date Feb. 27, 1997 Sec. 102(e) Date Feb. 27, 1997 PCT Filed Aug. 16, 1995 PCT Pub. No. WO96/07089 PCT Pub. Date Mar. 7, 1996In a process for monitoring the tightness of pipelines, in particular sewage pipeline systems, one or several control channels or tubular openings are arranged in the wall of the pipeline in its longitudinal direction. The mutually facing ends of the pipelines are interconnected so that the mutually facing ends of the control channels or tubular openings are tightly interconnected. The interconnected control channels or tubular openings form a closed pressure chamber for the whole pipeline system. The control channels or tubular openings are filled with a test medium under static pressure, pressure measurement means are associated with the control channels or tubular openings, and a leakage in the area of a sleeve or wall of the pipeline is detected when the pressure of test medium falls between two measuring points. |
