STANDARDS AND TESTING | PROCESSING
C-PVC kills germs Chlorinated PVC (C-PVC) is the most effective pipe material for suppressing microbes in drinking water, according to a recent paper in Water Research. Researchers from the KWR Water Research Institute in the Netherlands carried out the study to determine the influence of different pipe materials on the microbial populations in water and biofilm under semi-stagnant conditions. The researchers tested a range of pipe materials, including glass, copper, PEX and PVC, and tested for species including ATP and various bacteria. “We conclude that pipe material is an important factor that influences biomass concentration, abundance of specific microorganisms and the bacterial community composition in distribution systems with unchlorinated drinking water,” said the researchers.
Leak detection US-based Electro Scan has begun supplying its equipment to Europe for quality assurance testing of trenchless/no-dig pipe rehabilitation. It will work with several new customers and
partners testing full-length 360-degree ultraviolet (UV) and light-emitting diode (LED) Cured-In-Place Pipe (CIPP) liners. The service will be run by the company’s
European subsidiary, Elektro Scan, based in Frankfurt, Germany. While traditional CIPP lining systems use epoxy
resins cured with steam, hot water or ambient air, newer liners use glass reinforced materials that are cured using UV light as a heating source. Also, special resins may be heated with LED light to cure
Left: Electro Scan is to supply its LED-based pipe testing equipment for CIPP liners to Europe
up to five times faster than other methods. “Just because a CIPP liner can be cured five times faster, doesn’t mean it gives the needed water tightness that utility owners or their consult- ing engineers are expecting,” said Chuck Hansen, chairman and CEO of Electro Scan. Electro Scan says that its machine-intelligent technology provides unambiguous, unbiased pipe leak testing results – minutes after CIPP installation and curing is completed. Test results provide leak locations and severities for full-length 360-degree pipes. Across dozens of CIPP suppliers, Electro Scan says it can find and measure even the smallest pinholes.
Conduit certification United Poly Systems has become the first manu- facturer to achieve NSF International certification
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www.pipeandprofile.com May 2021 | PIPE & PROFILE EXTRUSION 27 Pipe testing excellence
IMAGE: ELECTROSCAN
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