Corrosion and Leaks Repair in a Bolted Oily Water Tank

28 Mar.,2023

 

The company has a group of cooperation teams engaged in the Common Leakage Of FRP Storage Tanks And Repair Methods industry for many years, with dedication, innovation spirit and service awareness, and has established a sound quality control and management system to ensure product quality.

Immediate Challenge

Bolted tank designs often include an internal coating when the tanks are built. Unfortunately, these internal coating systems are often inadequate for long-term water-immersion service. Over time, asset owners will need to turn to other solutions to mitigate or repair the damage resulting from a failed or inadequate coating.

Two of the more common reasons leaks can develop on bolted tanks are internal corrosion and issues with the gaskets between plates. Applications with high microbial activity, like oily water storage, frequently see accelerated corrosion located at any pinhole, void, or holiday on the internal coating causing through-wall failures to occur. Seals on bolted connections can fail for various reasons: the bolts themselves loosened over time; the tank was left empty for a period that allowed the gaskets to dry out, or the bolts have corroded, and the material loss loosens the tension on the gasket. Finding the root cause of a leaking tank is difficult to determine without a detailed inspection that can only be performed after a storage tank is drained.

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