CASE

Protection of Elbows in Municipality Potable Water Plant

Problem

Pipe elbows had a concrete liner which was very deteriorated and at times concrete chunks became loose in the system which was unacceptable.

Industry

Water & Wastewater Management

Application Date

2023

Location

Ontario / Canada

Equipment Application

VPF-Valves, Pipes and Fittings

Subtrate

Carbon Steel

Product

Belzona 1111 (Super Metal)
Belzona 1341N (Supermetalglide)

Repair Stages

Application Situation

The city had already planned a shutdown to address other equipment in the plant, so they decided to remThe 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

Belzona Facts

We worked closely with the specifier and provided great support. He was very pleased and had no hesitation to recommend Belzona as he knew not only about the quality and proven success of our products, but also the technical support on and off the site. Use of the products in confined space was also lauded compared to competitor’s product used on external of the pipe on same project.

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Customer based in Sarnia, Ontario was having corrosion problems in several flanges of his plant. The protective paint that was used in the past would peel off, exposing the substrate, which lead to corrosion around the flange, studs and nuts.