Volume 95 Issue 43 | pp. 22-23
Issue Date: October 30, 2017

Easy pipe replacement method raises safety concerns

Cured-in-place pipe repairs could lead to harmful emissions for workers and the public, research shows
Department: Science & Technology
Keywords: Safety, industrial safety, environment, pollution, water, atmospheric chemistry, polymers, materials

When a municipality repairs water or sewer pipes, it faces what seems like an easy decision: Dig up roads to replace the pipes entirely, or thread a tube of polymer resin through the damaged pipes, then inflate and cure the tube to create a new plastic pipe inside the old one. The decision to go with the second option is made even easier because the curing process appears relatively innocuous—it uses water, steam, or ultraviolet . . .

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