Introduction Anti-corrosion coatings do not last forever. They age, weaken and deteriorate and eventually their useful life ends. The most common cause for premature anti-corrosion coating failure is insufficient care during the mixing, application and curing processes. Poor application technique can typically cause problems such as improper thickness, pinholes, sags, mud-cracking, and holidays. Inadequate surface…
Introduction There are a number of factors which must be considered when anti-corrosion coatings are applied. The major ones include: Condition of the substrate Temperature Relative humidity Weather conditions Condensation Ventilation Ultraviolet light (UV) 1. Condition of the Substrate The surface must be clean and free from dirt, dust, abrasive blast medium (if used), oil,…
Introduction Pipe weld joints are one of the weakest links within the piping system. Pipe leaks often occur around the weld joints due to various reasons. Some of the reasons include: Lack of fusion Corrosion at heat affected zone Crack (due to heat stress, solidification, hydrogen-induced) Porosity Contamination Inclusion of slag In order to arrest…
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