Belzona seals leaks in clear water storage tank

KHIA ID: 8915
Industry: Water / Wastewater (WATR)
Application: TCC-Tanks and Chemical Containment Areas (TCC)
Substrate: GFRP
Customer Location: Scotland
Application Date: November 2022
Products: Belzona 1981 (SuperWrap II), Belzona 5811DW2 (DW Immersion Grade)
Problem: Due to the design of the tank sealing these joints from the external is very challenging. A solution that ensured the leaks would be stopped was required. The flexibility of the GRP also had to be considered during load/unloading of the tank.

Storage tanks

Belzona 1111 applied to fair the gaps between the tank sections

Belzona SuperWrap 2 system applied to the tank joints

Belzona 5811DW2 applied as a top coat

Application Situation
A clean water storage tank had developed several leaks from the sectional joints that hold the tank together.
Application Method
The GRP areas were prepared mechanically to a 40 micron profile. It was decided to repair all the joints to ensure no leaking areas were missed.

Belzona 1111 Supermetal was applied to fill the gap inbetween the joints. Belzona 1981 with Belzona 9381 was then applied as a band over the joint areas.

Two coats of Belzona 5811 DW2 were then applied over the bands to terminate back onto the GRP of the tank.
Belzona Facts
By using the Belzona system the tank could be repaired promptly with minimal disruption to the tank & surrounding areas of the plant.

The Belzona 1981 SuperWrap II system is able to cope with the movement of the tank during the loading/unloading cycles.
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