Cold Water Storage Tank Inspections

Keeping cold-water storage tanks in good condition is a vital step in maintaining safe and healthy water systems. Regular inspections not only help identify issues early but also ensure compliance with health and safety regulations, reducing the risk of Legionella bacteria growth.
Here are some essential tips to help you inspect your cold-water storage tanks effectively:

1. Annual Inspections Are Essential

An annual inspection of cold-water storage tanks is a must. During this inspection, the condition of the tank and the quality of the water must be recorded. It’s also important to measure the water temperature, especially during the summer, to ensure it stays below 20°C—an important threshold for preventing Legionella growth.

2. Qualified Professionals Are Key

A trained Water Hygiene Technician should carry out the inspection and document the findings in a monitoring logbook. If any issues are found, they must be escalated and addressed promptly according to the control scheme’s chain of command.

3. What to Check During an Inspection

A thorough inspection should cover both the inside and outside of the tank as well as the water within it. Key points to examine include:

• Tank Lid: Ensure it is tightly fitting and in good condition.
• Insect and Vermin Screens: Check that screens on overflow and warning pipes are properly fitted and intact.
• Lagging: The tank should be lagged to help maintain a consistent water temperature, preventing it from getting too warm or cold.
• Water Quality: Inspect for biofilm on the water’s surface or signs of stagnation.
• Inlet and Outlet Positions: These should be opposing to ensure proper circulation and prevent stagnation.

4. Using the HSG274 Guide

Click the link below to view Figure 2.12 from HSG274 Part 2: The Control of Legionella Bacteria in Hot and Cold Water Systems.

https://www.hse.gov.uk/pubns/priced/hsg274part2.pdf

The diagram illustrates the cold water storage tank inspection process, using a traffic light system to categorize tank conditions. It visually represents green (acceptable), amber (requires attention), and red (requires urgent action) based on factors like cleanliness, structural integrity, and contamination risks. This guide helps determine when corrective action is needed to ensure compliance and water safety.

5. Regular Inspections Protect Your System and People

Regular tank inspections are a critical part of a Legionella control scheme. By identifying and addressing issues early, you reduce the risk of creating an environment where Legionella bacteria can grow and thrive. This not only keeps your water systems safe but also protects the people who rely on them every day.

Let Dantek Help with Your Tank Inspections

At Dantek, we specialize in keeping water systems safe and compliant. Our expert team conducts detailed inspections, identifies risks, and ensures any necessary actions are carried out promptly.

Get in touch with us today to find out how we can help you maintain safe, reliable cold-water storage tanks. Call 01454 417 920 or e mail sales@dantek.co.uk

For more tips and services, visit our website at http://www.dantek.co.uk.