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Edward Lowton
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Pipework repair
21 August 2013
Belzona has solved a pipework problem at a UK refinery that was suffering from thin and through-wall defects, caused by severe external corrosion and pitting.
Hot work was not an option, and the client required a fast solution with minimal service disruption; every day of shutdown was costing £1.5m.
The application team was able to work on live equipment, so production could continue. Where leaks were present, a plate was bonded using a fast curing repair compound Belzona 1221 (Super E-Metal) over a holed area. A temporary wrap was created over that area using the same material. Then, the whole pipe was wrapped using Belzona 4301 (Magma CR1 Hi-Build), a material known for its chemical resistance properties. Belzona 1831 (Super UW-Metal) wrap was applied on top and also used to encapsulate the adjacent flange.
This system was chosen for a reason. Should the metal underneath the Belzona wrap continued to deteriorate and a through-wall defect occur, Belzona 4301 (Magma CR1 Hi-Build) would resist the contents of the pipe. Belzona 1831 (Super UW-Metal) in turn adds mechanical strength, while at the same time protecting the pipework from external corrosion damage.
The application took only 3 days to complete; no hot work, no replacement, no shutdown required.
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