How Strong Are FRP Tank Linings and Tank Repairs?

Fiberglass Tank Linings Improved with FRP

Over time, storage tank linings tend to face the issue of corrosion, and that becomes an issue even quicker for tanks storing harsh substances. But even water can be an issue: Water & Wastes Digest’s Bob Hummel writes that salt- and chloride-containing water settling in the bottom of a tank may eat away at it while spawning an electrolyte that exacerbates the problem.

Yet facility managers and property owners may understandably hesitate to commit to a full-on tank replacement. As an alternative, fiberglass tank linings, also known as FRP linings, can be a long-lasting, durable solution for reviving aging tanks of various materials. Better yet, this type of repair can save quite a bit of money and downtime, especially when compared to full tank replacements.

Installing an FRP Lining

To install FRP tank linings, writes Hummel, “the tank must be dry and the surface properly prepared.” The process also involves the use of “primer, putty, catalyzed resin with a glass mat and a sealcoat.” Despite all of those elements, skilled technicians can complete this procedure in a shorter timespan than that needed for a full-on replacement. This means the tank will be back in working order and able to resume its storage duties more quickly. FRP lining installations also hold a speed advantage over installing entirely new steel bottoms.

Note that properly trained applicators are required for this type of fiberglass tank repair. However, in today’s field, qualified professionals are available for the task.

The Uses of FRP Linings

FRP linings are useful for many situations. For instance, on steel tanks where the bottom has developed holes, installing a fiberglass lining can stop leaks for many years. And when corrosion is severe, these linings can fight off both exterior and interior corrosion. While single layers of material are often appropriate, the installation of a double lining is able to further amplify the tank’s durability and strength when called for.

The Strength of FRP Linings

A tank leak repair using FRP materials can bridge substantial holes in a tank. In fact, some applications are so thorough that they become a “secondary bottom,” to borrow Hummel’s phrase. Some estimates say that single-laminate systems will hold up against 37 PSI. Double laminates may be able to withstand more than twice that: 82 PSI.

Per Hummel, that performance gives FRP lining systems more than enough strength for most applications. For instance, he writes that a typical tank will develop an internal pressure of just 22 PSI. Additionally, heat- and corrosion-resistant materials are available, making FRP linings viable in numerous conditions.

Need FRP Tank Linings?

For many years now, FRP linings have saved facility managers and owners time and hassle, all while delivering great performance. To see if they are the right solution for you, contact a professional today.