Hollow GRP Water Tank Roof Support Replacements

Hollow GRP water tank roof support replacements recently completed at a maximum security site in Surrey. 

The sites 495,000 litre sectional GRP storage tank had been previously risk assessed by their water treatment service provider. 

As part of the assessment’s non-conformities it was highlighted that the storage tanks hollow GRP roof supports were non-compliant with ACOP L8 guidelines. 

Why are hollow GRP water tank supports non – compliant?

Hollow GRP (Glass Reinforced Plastic) roof supports can pose a legionella risk due to the potential for stagnant water accumulation within the hollow spaces. 

Legionella bacteria thrive in warm water environments, and when water becomes stagnant, it creates an ideal breeding ground for these bacteria to multiply.

Here’s how hollow GRP roof supports can contribute to the legionella risk:

1. Stagnant water: If water becomes trapped or accumulates within the hollow sections of the supports, it can remain stagnant for extended periods. Stagnant water with temperatures between 20 to 45 degrees Celsius (68 to 113 degrees Fahrenheit) provides a favorable environment for the growth of legionella bacteria.

2. Biofilm formation: Stagnant water encourages the formation of biofilms, which are slimy layers consisting of microorganisms and organic matter. Legionella bacteria can thrive within these biofilms, using them as a source of nutrients and protection from disinfection measures.

3. Dispersal of bacteria: If the stagnant water within the hollow GRP supports becomes disturbed or released into the water system, it can introduce legionella bacteria into the water supply of the tank, increasing the risk of infection if the water is inhaled or ingested.

To mitigate the legionella risk, it is important to design water systems with proper maintenance and prevention measures. Regular inspections, cleaning, and disinfection of water tanks, including the roof support structures, can help prevent the accumulation and growth of legionella bacteria.

Our hollow roof supports replacement solution 

Echo Square Services were selected to help assist in replacing all non-compliant hollow roof supports within the storage tank.

Our solution proved to be the most cost effective alternative in comparison to carrying out a more regular water tank disinfection regime.

Or completing a full water tank replacement of the non-complaint storage tank which was initially considered.

Due to the size of the storage tank, each support had to be replaced systematically to ensure the water storage tanks structural integrity remained unaffected.

Our team also installed support brackets to each solid GRP tank roof support to help ensure the water tanks tie rods had additional support.

Upon completion of our works the storage tank was cleaned and disinfected prior to placing the system back online.

Should you require help with a similar hollow GRP roof support replacement project please don’t hesitate to contact our team

Leave a Comment

This site uses Akismet to reduce spam. Learn how your comment data is processed.

Ross St John
14:43 23 Aug 24
Great Company to use, very efficient and detailed. Highly recommend
Anjo
05:29 22 Jul 24
We manage a large residential block and recently reached out to Echo to quote to reline two water tanks that were failing. An absolute fantastic service all round. A quote was received within a day or so. Works were booked in and communication was excellent. We were really impressed with the engineers on the day. They communicated well on the day in terms of the plan of action. Once the work was complete, they ensured all areas were left clean and tidy. A follow up report post works was sent very soon after the works.We look forward to working with Echo again. If you need honest, reliable contractors who will get the job done and to a high a standard, don't hesitate to get in touch with them.Thank you.
Shaun Medlin
08:38 13 Aug 23
I contacted Echo Square on behalf of a client of mine who urgently needed her Victorian underground Cistern re lined. The work was quoted for promptly and the work carried out to a high standard by the engineers who were courteous and friendly despite their long drive to site. My client was very impressed and so grateful to have her Cistern back in working order. I would highly recommend this company and will most definitely approach them again should I have another client with tank issues in the future. 5 star service!
Terry Stevens
15:03 27 Jan 23
Echo Square attended site after we water jetted a concrete tank, they tank lined the entire tank in just a few days, fantastic job
Jessica Neil
08:01 14 Jun 22
Echo Square Services team assisted in helping with the refurbishment of two very difficult to access steel water tanks located at a VIP client’s head office.Their team did a fantastic job.I was especially impressed by the comprehensive photo report at the end.Highly recommend!
Laurence Green
11:05 13 Jun 22
** Highly Recommended!**Echo Square Services were assigned to reline two cold water tanks at a presdigious Law firm in Farringdon. The job was carried out successfully and on time with zeor disruption to the business operation. James and his team were a pleasure to work with, taking extreme care with all aspect of communication, health and safety and workmanship.Thank you James and the team!!
Rae Nunn
13:17 26 Feb 19
Having used other companies in the past I can wholeheartedly say that our dealings with Nationwide Tank Relining have been a breath of fresh air. We have had tanks relined, water hygiene assessments and floor coatings. All work was carried out in a timely manner and the quality of work has each and every time been exemplary. My bosses are thrilled with my decision to switch to Nationwide Tank Relining and a tank that was relined 10 years ago by them still looks good as new internally, and the money we've saved from choosing the right supplier has proven to be a very smart business move. Highly recommended!
js_loader
Share via
Copy link