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  • Writer's picturePlasTech Services Inc.

How to Inspect and Maintain a Fiberglass Tank?

Fiberglass Tank Inspection and Maintenance

As industrial businesses turn to more durable and cost-effective materials, such as Fiberglass Reinforced Plastic (FRP), for their tank storage solutions, it is essential to properly inspect and maintain these tanks to ensure safety and reliability. At PlasTech Services, we believe proper inspection and maintenance are integral to keeping FRP tanks up and running efficiently. This can also be important when purchasing a used fiberglass tank.

Regular inspection of an FRP tank is the first step to ensuring a tank and its components are operating safely and efficiently. We suggest a twice-a-year visual inspection to check for holes, corrosion, and other signs of wear and tear. While conducting these inspections, it is important to look for any signs of leakage and ensure all necessary seals are in place and up-to-date. Additionally, we recommend physical cleaning of the tank, as dirt and debris sitting on the walls and floor of the tank can cause damage over time.

Check out our detailed article on "Fiberglass Tank Inspection."

When it comes to maintenance, many FRP tanks require special cleaning that stops short of full acid washing. At PlasTech Services, we offer specialized services to help our customers maintain their tanks, including fiberglass tank repair, modifications, and exterior coating. We also provide interior tank re-lining services and can reseal tank openings and repair damage caused by corrosion. Does your Fiberglass tank need repaired or replaced? Check out our article by clicking here.

FRP tanks are often neglected, leading to costly repairs and potential safety issues. In order to avoid these costly problems, businesses should partner with a trusted partner like PlasTech Services to ensure their FRP tanks receive proper inspection and maintenance. Even if you already have a reliable technician for routine maintenance, PlasTech Services is available for emergency repairs and specialized services.

FRP tanks are a popular choice for businesses that need reliable and cost-effective tank storage solutions. With regular inspection and maintenance from a professional like PlasTech Services, your FRP tank can last for years. Contact us today to learn more about our inspection and maintenance services and get peace of mind knowing your FRP tank is in good hands.

Step 1: Visually Inspect the Tank

  1. Look for any visible signs of damage, such as cracks, holes, or discoloration.

  2. Check the tank's fittings and connections for any leaks or other issues.

Step 2: Test for Leaks

  1. Fill the tank with water

  2. Apply a soapy solution to all of the fittings and connections.

  3. Look for bubbles, which would indicate a leak in that area.

Step 3: Clean the Tank

  1. Scrub the inside of the tank with a mild detergent and warm water.

  2. Use a detergent that is specifically designed for use with fiberglass.

  3. Rinse the tank thoroughly with clean water to remove any remaining detergent.

Step 4: Check the Tank's Supports and Anchors

  1. Ensure that the tank's supports and anchors are secure and in good condition.

  2. Check these more frequently if the tank is located in an area with high winds or seismic activity.

Step 5: Monitor the Tank's Interior Environment

  1. Monitor the tank's interior environment for changes and take appropriate action as needed. This can include measuring the pH level, temperature, and dissolved oxygen content.

  2. If the tank is being used for storage of chemical substances, ensure that the tank's interior is regularly checked for any corrosion or chemical damage, and that appropriate linings or coatings are being used.

It is important to note that, depending on the usage and conditions the tank is subjected to, the frequency of inspection and maintenance may vary, but it is recommended to conduct them at least once a year. By following these steps, industrial fiberglass tanks can be inspected and maintained properly to ensure they continue to function safely and efficiently.

Need help?

We've been inspecting and maintaining fiberglass tanks since 1988. Give us a call at 1-410-737-4700, request a free quote by clicking here, or email us at


Fiberglass Tank & Pipe Institute, "Fiberglass Tank & Pipe Institute: Inspection and Maintenance" (2019)

National Fiberglass Tank and Pipe Association, "NFPA: Maintenance & Inspection of Fiberglass Reinforced Plastic (FRP) Tanks and Ducts" (2021)

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