Cured-in-Place-Pipe (CIPP): Inhalation and Dermal Exposure Risks Associated with Sanitary Sewer, Storm Sewer, and Drinking Water Pipe Repairs

Cured-in-place-pipe (CIPP) is the most popular water pipe repair method used in the U.S. for sanitary sewer, storm sewer, and is increasingly being used for drinking water pipe repairs. Today, approximately 50% of all damaged pipes are being repaired using CIPP technology. The CIPP procedure involves the chemical manufacture of a new plastic pipe called a CIPP inside a damaged water pipe.
Little is known about CIPP worker exposures and health risks. CIPP manufacturing sites are highly transient, with a single installation location being used from a few hours to a few days. Unlike traditional manufacturing operations, there is not a ‘permanent address’ to visit or inspect. Once the construction process is complete, the workers and equipment move on. The CIPP manufacturing process can expose workers to raw chemicals, forced air, steam, hot water, ultraviolet (UV) light, materials created and released into the air during manufacture, as well as liquids and solids generated by the process and worker activities. To date, CIPP air monitoring studies have been unable to comprehensively characterize occupational exposures because of a narrow focus on VOC vapors and the use of nonspecific detectors.

Source: https://blogs.cdc.gov/niosh-science-blog/2017/09/26/cipp/

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