Rust can cause severe damage to technical plants and pipe systems. Therefore, long-term protection should always be used at the time of insulation. Although some plant parts are less susceptible to corrosion, reactions of metals under the influence of moisture cannot be entirely avoided. In damp environments, in particular, additional protective measures are indispensable. Without sufficient insulation, corrosion can also be the consequence of condensation.
Insulation with FEF and PEF reduces the risk of condensation reliably: It keeps surfaces dry and protects it against corrosion.
Exterior danger zones
Interior walls of pipes and tanks are better protected from corrosion than their exterior, because there is usually no oxygen in closed systems. It behaves differently with exterior surfaces: The composition of the moisture which influences the medium from outside is normally unknown. For instance, water with a low pH value (<7) promotes greater corrosion. In addition, oxygen cannot be kept away from the surfaces altogether. Exterior corrosion is also the most frequent cause for moisture damage on pipelines and other installation systems.
Prevention of localised corrosion
When there is surface corrosion, the material decomposes successively and consistently. Selective corrosion, on the other hand, only appears in limited areas and advances rapidly. It can lead to so-called stress fracture corrosion, which arises with the combination of corrosion and tension stress. The effect also referred to as 'pitting' arises when concentrations of certain chemical substances influence the surface. Non-rusting steel, for instance, can become susceptible to corrosion when coming into contact with chlorides. Therefore, corrosive contents in insulting materials may not exceed certain thresholds. The extent to which metal materials can be used under critical conditions can normally be determined by referring to the manufacturer resistance charts.