9 Common Mistakes to Avoid When Installing a Water Tank

Installing a cold water tank is a critical task that, if done incorrectly, can lead to significant operational issues, compliance failures, and costly repairs. Facilities managers must ensure that installations meet both functional requirements and regulatory standards. This article outlines nine common mistakes to avoid during water tank installation, helping you maintain system integrity and compliance.

1. Uneven Base Installation

A level base is fundamental for the structural integrity of a water tank. An uneven foundation can cause stress on the tank walls, leading to cracks and leaks over time. Ensure that the base is constructed using appropriate materials like base levelling steels, and is perfectly level before installation.

2. Using Inappropriate Base Materials

Selecting the right materials for the tank base is crucial. Using materials like chipboard instead of marine-grade plywood can result in moisture absorption, leading to base degradation and potential tank failure. Always opt for durable, water-resistant materials that can withstand the tank's weight and environmental conditions.

3. Oversized Tanks Leading to Stagnation

While it might seem beneficial to install a larger tank, an oversized tank can lead to water stagnation due to insufficient turnover. Stagnant water can become a breeding ground for bacteria, including Legionella, posing health risks and compliance issues. Assess your facility's water usage accurately to determine the appropriate tank size. Remember, with when it comes to water tanks, bigger is rarely better!

4. Inadequate Access for Maintenance

Proper access is essential for routine inspections, cleaning, and maintenance. Installing tanks in locations with limited access can hinder these activities, leading to neglected maintenance and potential system failures. Ensure that the tank's placement allows for easy and safe access for personnel.

5. Improper Bolt Tightening

Bolts that are not adequately tightened during installation can loosen over time, leading to leaks and structural instability. It's essential to follow manufacturer specifications for bolt torque and to recheck tightness after the tank has been filled and settled.

6. Using Non-Marine Grade Bolts and Washers

The use of standard bolts and washers instead of marine-grade options can lead to rapid corrosion, especially in humid environments. Corroded fittings compromise the tank's integrity and can lead to leaks and costly repairs. Always use corrosion-resistant, marine-grade hardware for installations.

7. Inadequate or Poorly Installed Seals

Seals between tank panels are critical for preventing leaks. Using low-quality sealants or improper installation techniques can result in seal failure. Ensure that high-quality, WRAS-approved sealants are used and that installation follows best practices to maintain watertight integrity.

8. Neglecting Tie Bar Tension

Tie bars are essential for maintaining the structural integrity of sectional water tanks. If tie bars are not properly tensioned, the tank walls can bow or flex when filled, leading to joint stress and potential leaks. Regularly check and adjust tie bar tension as part of the installation and maintenance process.

9. Using Non-WRAS Approved Materials

Using materials that are not WRAS (Water Regulations Advisory Scheme) approved can lead to compliance issues and potential contamination of the water supply. Ensure that all materials, including sealants, coatings, and fittings, meet WRAS standards to guarantee safety and compliance.

Conclusion

Avoiding these common mistakes during water tank installation is vital for ensuring the longevity, safety, and compliance of your water storage systems. Proper planning, quality materials, and adherence to best practices can prevent costly issues down the line.

Run this list past your chosen contractor, and ask them to verify what their plans are in respect to each point, to give you the peace of mind knowing that you won’t be left with a tank suffering with one or more of these issues.

For more detailed information on water tank installation and maintenance, visit our Cold Water Tanks page.