Chlorination of Water System on Vacant Building

After being vacant for 24 months, the church hall underwent a thorough chlorination process to ensure that its water systems were safe, clean, and compliant with regulations before it could be reopened. The remedial team, with their years of experience, will carry out the following necessary steps in order to achieve this.

The Problem: To Chlorinate the Water System in an Unoccupied Church Building

Firstly, water will become stagnant if it is not regularly flushed. This will create an ideal environment for bacteria such as, Legionella to grow within the water system. As a result, this poses a high risk of exposure to Legionella. Therefore, it is necessary to take precautions to eliminate or minimise the risk of exposure for both visitors and staff. To address the issue of harmful bacteria in the water system, a common method is to perform a chlorination process. This involves adding chlorine to the water in order to disinfect it and eliminate any potential bacteria.

The Solution: To Address the Water System issue is to Conduct a Chlorination Process

Our highly skilled team, equipped with extensive practical experience and expertise, will execute the following tasks in accordance with L8 and ACoP regulations. To ensure a meticulous and superior quality of work.

Step 1 – Cleaning and Chlorinating the Cold Water Storage Tank Our team will empty the tank and thoroughly clean the internal panels and floors to remove any sediment build-up. We will document the condition of the tank and report any damage or issues to you. The tank will then be filled and the water will be chlorinated using Silver Hydrogen Peroxide.

Step 2 – Chlorinating the Building Water System We will first dose the stored water with Silver Hydrogen Peroxide, which is safe for drinking water. This will eliminate any waterborne bacteria. Next, we will flush the system and ensure that the chlorinated water reaches all water outlets. We will test the water outlets to ensure the solution is at the appropriate level for one hour. The tank will be refilled, and samples will be collected to ensure the water is safe and compliant.

Step 3 – Descaling and Disinfecting All Outlets Additionally, our team will strip, clean, and disinfect all taps to remove limescale build-up, which can serve as a breeding ground for bacteria. 

Step 4 – Inspecting, cleaning, disinfecting and calibrating all TMV’s – To ensure they are functioning properly and maintaining the correct temperature to prevent scalding. This step also helps prevent the growth of Legionella bacteria. 

Step 5 – Thermal Disinfection on the POU Water Heaters and Calorifiers – Focuses on carrying out thermal disinfection on POU (Point of Use) Water Heaters and Calorifiers. This process improves energy efficiency, kills any Legionella bacteria, and reduces biofilm, ultimately minimising system failures.  

The Result: A Clean Water System Safe for Opening

By following the necessary procedures, the quality and safety of the water system will be greatly enhanced. This will effectively decrease the chances of being exposed to dangerous bacteria such as Legionella. The cleaning process will eliminate any build-up of scale, biofilm, stagnation, slime, sludge, and algae in the water tank. Lastly, conducting microbiological water samples will provide assurance to customers that the water is safe, clean, and meets all necessary standards and regulations.

Upon the completion of the work, Techright will provide the following:-

  • Certificate of system chlorination
  • Certificate of water tank chlorination 
  • A risk assessment and method statement of work
  • A completion report which will include pictures of the work and will require the clients signature 
  • Microbiological sampling of the water at a UKAS accredited laboratory