scope:

This standard covers materials and procedures for the rehabilitation of existing water mains 4 in. (100 mm) in diameter and larger by the installation and curing of a resin-impregnated textile tube that is either inverted into the main using a hydrostatic head of potable water or air pressure or pulled into the main and subsequently inflated by potable water or air. The cured-in-place pipe (CIPP) is cured by circulating hot water, introducing controlled steam, or photoinitiated reaction (light) within the resin-impregnated textile tube once installed into the existing pipe. When cured, the finished product will be a continuous, tight-fitting CIPP.

Purpose

The purpose of this standard is to provide the minimum requirements for the materials and installation of CIPP systems for the rehabilitation of existing potable water mains 4 in. (100 mm) in diameter and larger. The standard includes materials, inspection, and preparation of mains for CIPP installation and curing, testing, and verification requirements.