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HDPE double-wall corrugated pipe closed water test standard

HDPE double-wall corrugated pipes are mainly used in the transportation and discharge of wastewater from urban and industrial projects. Many transported waters are corroded, acidic, heavy metals and other chemical pollution. Leakage during transportation will cause harm to the surrounding environment and geology. Therefore, the pipeline Acceptance standards are very critical, and closed-water tests are needed to check whether they meet the standards.       The closed water test is also called the water storage test. The flow of water is used to detect whether the pipeline itself and the connection are leaking. Sewage pipelines, rain and sewage confluence pipelines, and other HDPE double-wall corrugated pipes that require closed water in the planning must be closed water experiments, and only after passing the experiments can they be backfilled.  1. Before the experiment, the nozzles at both ends of the experimental pipe section were blocked with 1:3 cement mortar with 240mm thick bricks, and the surface was sealed. After reaching the strength in 3 to 4 days, water was poured into the upstream well. 2. Control the water level of the closed water experiment. The experimental water level should be 2 meters above the inner top of the upstream pipe section of the experimental section. If the height of the upstream hdpe double-wall corrugated pipe tube to the viewing well is less than 2 meters, the water level of the closed water experiment can reach the well head . 3. When the water head reaches the requested height, check the brick plug, pipe body, well body, and see if there is any water leakage. If there is severe leakage, it should be plugged. After soaking for 24 hours, investigate the water seepage volume and measure the water seepage volume. It should not be less than 30 minutes. 4. Accurately calculate the amount of water seepage. During the closed-water experiment, it is necessary to record various data, and accurately calculate the amount of water seepage according to the specifications, and compare the data to calculate whether the experiment is qualified or unqualified.     Hope the above details are useful to you
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