Belzona SuperWrap II used at a Sewage Treatment Plant

KHIA ID: 8397
Industry: Water / Wastewater (WATR)
Application: TCC-Tanks and Chemical Containment Areas (TCC)
Substrate: Steel
Customer Location: Poland
Application Date: October, 2020
Products:

Belzona 1981 (Superwrap II Resin)

Belzona 9381

Belzona 9382

Belzona 1111 (Super Metal)

Belzona 9611 (ES Metal)

Belzona 5821  

Belzona 2911 (Elastomer QD Conditioner)

Belzona 2211 ( MP High Build Elastomer)

Belzona 9341

Problem: Erosion and perforation at the base off the steel tank.
Photograph Descriptions

Image 1: Internal of the Tank Image

2: Application of SuperWrapp II Image

3: Application showing Belzona 5821 & Belzona 2211

Image 4: Complete Application

Application Situation
A length of 2 m and a width of 0.5 m, in the lower part of the bottom of the tank, the steel wall thinned from 5 mm to 4.2 mm; 3.8mm; 2.4mm in one place 1.8mm with one leak (a hole with a diameter of 5mm).
It occurred as a result of abrasion in this area and sub-cladding corrosion. The bottom of the tank rests on the concrete foundation. The Tank diameter - 20m, mild steel St3S, conical bottom. The original sheet thickness 5mm. Working temperature in the tank 30-40 degrees C.
Application Method
To begin with abrasive blasting were completed in accordance with International Standards followed by removal of dust and degreasing.
Repair of perforation and strengthening the shell weld with Belzona 1111 composite Belzona 9341 we completed in accordance with Belzona System Leaflet TCC-01
Belzona SuperWrap II system application was used to repair most areas exposed to erosion then followed by application of Belzona 5821 as a top coat. Completed in accordance with an adapted version of VPF-11 and TCC-03
Concrete expansion Joints beneath the steel jacket that came in contact were completed in accordance with Belzona System Leaflet FPA-06 where Belzona 2911 and Belzona 2211 were applied.
Belzona Facts
Belzona SuperWrap II was primarily selected due to repairing the tanks integrity to ensure a long lasting performance for years to come.
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