Belzona repairs sections of cooling water spools

KHIA ID: 9958
Industry: Power (POWR)
Application: VPF-Valves, Pipes and Fittings (VPF)
Substrate: Composite
Customer Location: Connah's Quay
Application Date:
Products: Belzona 1981 (SuperWrap II),Belzona 7311
Problem: undergoing a planned shutdown, the client encountered issues while breaking into the cooling water system due to seized bolts.
A damaged spool on a crate

Water cooling spools arrive with damage to sealing faces and stabbings

A man wearing PPE using a power tool on the spool

The surface areas are prepped to a minimum surface profile for the repair solution

Superwrap II is being wrapped on a small section of the spool

Belzona 7311 is applied and Belzona Superwrap II is applied to add strength and integrity

A completely repaired spool with Belzona solutions

The cooling spools have been reprofiled and repaired, ready to be reinstated

Application Situation
The spools were removed by cutting around the sealing face joints, severing the bolts and causing damage to the sealing surfaces in the process.

In addition to this damage, several stabbings have either completely failed or have been previously repaired in situ over the years but are no longer performing as required
Application Method
Surface preparation was carried out using power tools, in line with best practice for composite repairs.

Damaged sealing faces were reprofiled using Belzona 7311



For the stabbing Repairs, new collars were machined to slip over the existing damaged stabbings, improving both bonding area and structural integrity. These collars were then bonded in place using Belzona 7311, followed by an external reinforcement using Belzona SuperWrap II
Belzona Facts
This wrap system has previously been used successfully on several cooling water pipes. The solution ensured minimal downtime and had fully restored the assets.
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