Technical Viability of Renovating Segments of Existing Large Diameter Pressure Pipelines with Cured in Place (CIPP) and Other Thermoset Resin Lining Systems

摘要

With the arrival of new technologies, rehabilitation of large diameter pressure pipelines has become more cost effective and can often be accomplished without extensive excavation and/or pipe replacement. This paper explores operating pressure and diameter range capabilities of available Cured—in-Place Pipe (CIPP) and other thermoset resin technologies for use in Pressure Pipe applications including sewage force main, NSF 61 certified potable water, and storm water transmission mains. A questionnaire was developed to generate a survey of present-day technologies and availability to prospective end users. We polled several contractors and manufacturers covering a variety of topics including System Type, Diameter and Pressure Range, Constructability, Access Requirements and Closure Methods. Our objective was to discern the current state of CIPP and other thermoset resin based technology allowing for successful installation of 48-inch or greater diameter pressure pipe rehabilitations using little or no excavation.