Concrete Water Tank Reline London Hospital

Echo Square Services Ltd recently completed the full water tank reline and refurbishment of a 120,000 litre concrete water tank for a major London hospital.

The concrete water tanks internal surfaces were previously lined with an epoxy coating which had failed.

The underside of the water tanks roof was also coated with a non-compliant bituminous coating and all steel supports between the roof sections were heavily corroded.

To improve the flow of water through the tank it was required to reinstall the existing inlet float valve on to the opposite side of the water tank as it was positioned on the same side as the water tanks outlet which isn’t compliant with ACoP L8 guidelines.

Furthermore, the existing access into the tank was very poor with no fixed ladder in place.

We therefore commenced the water tank refurbishment project by installing a compliant GRP ladder to the inside of the water tank.

We then removed the existing float valve and installed stainless steel pipework from one side of the water tank to the other while also fitting a new Keraflo KB delayed action valve on the opposite side of the water tank to ensure the optimum circulation of water stored within the water tank would be achieved when the water tank was put back into service.

Water Tank Reline Preparation

The first stage of the water tank reline was to remove all existing non compliant coatings from all internal surfaces of the water tank and roof by utilising small mechanical hand tools.

Minor surface pitting was then filled with a polyurethane sealant.

Once all surface pitting was filled our operatives applied an epoxy resin based film primer to the water tanks internal concrete surfaces to consolidate the surface and improve adhesion of our polyurethane coating system.

Water Tank Coating Application

Following the application of the base primer we were in a position to apply a base coat (Grey) of ES 988 DWPU to all internal surfaces.

Once cured, the above was then repeated with a top coat of (Blue) ES 988 DWPU.

Water tank disinfection

Once the coating had cured, the water tank was cleaned & disinfected by the application of a 500ppm chlorine dioxide solution which was sprayed onto the water tanks internal surfaces.

Additional Water Tank Remedial Works

As part of the full refurbishment project we also fitted inline vermin screens to both the warning and overflow pipes

The non-compliant copper open vent pipework was also cut back and the hole in the lid was sealed and coated internally.

The original ball valve access hatch was also sealed in place using a polyurethane sealant.

With the major refurbishment now complete, our client was in a position to be place the system back into service

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!