Chemical Focus
with CPVC pipe, saving the plant additional time and money during the installation process. CPVC also features outstanding flame properties
compared with other plastics, which is especially important when used for air ducts. CPVC will not sustain a flame on its own and does not support combustion, due to its limiting oxygen index (LOI) of 60. Outside the plant building, Corzan CPVC continues
to be used as transport pipe for highly corrosive acids, bases and salts – including hydrogen chloride, caustic soda, calcium hydroxide, sodium carbonate and sodium chloride. Many of these pipes have been installed outside, unpainted and uncoated, subject to UV exposure and all sorts of harsh weather conditions, for more than 17 years and are still going strong. Lubrizol has noted a growing trend for companies to
Due to its resilience, CPVC can also be used on pipes outside the plant building.
The fluids in the CPVC resin producing plant frequently reach temperatures higher than 60°C and at times close to the boiling point of water. For protection, the plant needs to wrap and insulate metal pipes to prevent any burn hazard. This is typically not necessary
replace all of their existing – and problematic – piping with CPVC. There have been several instances where CPVC has been used to solve a piping performance problem, yet the company seldom sees it specified in the original design. This is an unfortunate situation, as compared with other alternatives, CPVC consistently wins on performance, price and lifespan. n
For more information ✔ at
www.engineerlive.com/epe
Peter Kilburn is Lubrizol plant manager at Delfzijl, the Netherlands.
www.lubrizol.com
For more information ✔ at
www.engineerlive.com/epe
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