Corrosion beneath the insulation layer of petrochemical pipelines

In the petrochemical industry, pipelines usually require insulation to maintain the temperature of the substances inside them and prevent heat loss. However, corrosion under the insulation layer often occurs, mainly due to moisture penetrating the insulating material. To prevent corrosion beneath the insulation layer, the following measures can be taken: 1. Use insulation materials with good moisture resistance, such as closed-cell foam and glass wool. 2. Install a high-quality waterproof layer outside the insulation material to prevent rainwater and environmental moisture from penetrating into the insulation layer. 3. Regularly check the integrity of the insulation and waterproofing layers, and repair any damages promptly to prevent water infiltration. 4. Where possible, install a drainage system to ensure that water accumulated inside the insulation layer can be drained promptly. 5. Conduct regular anti-corrosion treatment and inspections on the pipelines to detect and address corrosion issues at an early stage. Through the above methods, corrosion problems beneath the insulation layers of petrochemical pipelines can be effectively reduced or avoided. .