Protection of elbows in municipality potable water plant
KHIA ID: 9336Industry: Water / Wastewater (WATR)
Application: VPF-Valves, Pipes and Fittings (VPF)
Substrate: Carbon steelCustomer Location: Ontario, Canada
Application Date: May 2023Products: Belzona 1111 (Super Metal),Belzona 1341N (Supermetalglide)
Problem: Pipe elbows had a concrete liner which was very deteriorated and at times concrete chunks became loose in the system which was unacceptable.
Elbow with deteriorating concrete liner.
Rebuilding deep pitting with Belzona 1111.
Application of stripe coats of Belzona 1341N.
Elbow after application of second coat of Belzona 1341N.
Application Situation
The city had already planned a shutdown to address other equipment in the plant, so they decided to remove the concrete liner in the elbows and change it with a coating that was approved for potable water. The project was divided into 2 phases for a total of 6 elbows.Application Method
All the elbows were grit blasted to SSPC SP10. They had pitting and irregular welds which were smoothed and filled with Belzona 1111. Then Belzona 1111 was frost blasted, stripe coated and two coats of Belzona 1341N were applied.Approval Required: NSF