A 2002 study conducted by the National Association of Corrosion Engineers (NACE) found that underground infrastructure corrosion cost municipalities across the country over 22 billion dollars in that year alone. Adjusted for inflation, that amounts to nearly 50 billion dollars annually today. With more than 800,000 miles of underground water piping to protect, finding a solution to this issue is vital.
New composite manhole rings and covers have been introduced by BlueGreen Municipal Solutions. The new rings and covers can be used to replace failing cast iron manhole access covers or installed on new manholes for both sanitary and storm sewers.Unlike cast iron or other metallic covers and rings, BlueGreen Sewper Covers are not affected by H2S sewer gas and will never rust, said Eric Dupré, BlueGreen technical director of product development.
If you’ve spent any time working in the infrastructure industry, material names such as PVC, HDPE, resins, CIPP, epoxy and fiberglass are common. So why has just about every structure in our sewer system been re-engineered and designed using these types of materials except for the manhole cover?
I would assume the old cliché “If it ain’t broke, don’t fix it” would be one of the first reasons, but our manholes are broke and we do need to fix them.