Pipeline Rehabilitation: Performing Under Pressure in India
Dec 15, 2011
There has long been a common myth to the effect that no spiral wound liner can perform when used as a method of rehabilitation/liner in pressure pipelines. This perception is born perhaps from the perceived fact that the majority of such liners are machine wound from a starting pit, or manhole, from where they are also grouted, often under less that ideal conditions, leading to voids behind the liner which subsequently result in the distortion of the liner when the pipeline is pressurized, which in turn then leads to tearing of the joints and a general catastrophic liner failure. This myth is further perpetuated by the fact that most spiral wound liner manufactures state in their product data that the lining of pressure pipes cannot be recommended with their system.
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