Belzona 1341 refurbishes a spiral casing on a Francis turbine

KHIA ID: 9462
Industry: Power (POWR)
Application: CEP-Centrifugal Pumps (CEP)
Substrate: Carbon steel
Customer Location: Wales
Application Date: June 2024
Products: Belzona 1111 (Super Metal),Belzona 1341 (Supermetalglide)
Problem: As part of a planned shutdown, the Hydropower plant aimed to refurbish the spiral casing on a Francis turbine. This casing was originally lined with Belzona 1341 around 2006.
A large tube inside a Francis turbine with a pale coating

Belzona protective coating from around 2006 was due for a refurbishment

A large tube inside a Francis turbine with a rough surface

Spiral casing was grit blasted back to profile, using 2.5 tons of grit.

A man kneeling down inside a large tube, coating the surface of the tube

Belzona 1111 was used to reprofile heavily pitted areas prior to coating of Belzona 1341 (Supermetalglide)

A new blue coating on the tube inside a Francis turbine

Two coats of Belzona 1341 (Supermetalglide) was applied to Spiral casing.

Application Situation
Customer was highly satisfied with the performance of the original Belzona 1341 system and requested the same system be reapplied.

Reprofiling was conducted on heavily corroded areas using Belzona 1111 before a two-coat system of Belzona 1341 was applied.
Application Method
The project involved working in confined spaces with limited access, using 2.5 tons of grit to remove the old lining and achieve the correct profile and cleanliness.
Belzona Facts
The customer was extremely pleased with the team and their conduct on-site. The level of finish achieved exceeded expectations, and the customer plans to invite Belzona UK Distributor back for future work.
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