Recent Projects SPRINKLER TANK REPAIR - LONDON This Franklin Hodge 'Firestore' sprinkler tank, in the basement of a central London hotel was leaking from the bolted sectional panel joints The butyl 'bag' liner inside the tank had perished with age and was letting water in behind it, causing it to float inside the tank. This would not have been a good scenario had there been a demand on the tank for putting out a fire. The tank was being constantly topped up at the ball valve because of all the water leaking out of it across the underground car park. We safely accessed the tank and cut the rubber liner into manageable pieces that we physically removed from within. We could have installed a new rubber bag liner, but our client wanted a watertight system that would last 'forever' and guarantee they didn't have the same problem again. We carried out preparartory sandblasting to the steel & concrete surfaces 150mm both sides of the panel joints. After priming we applied our watertight fibreglass lining system over the keyed areas to seal all the joints. This Franklin Hodge sprinkler cold water storage tank was back into service within the week. COLD WATER TANK UPGRADE - SEVERN VALLEY This pair of steel water tanks in the Severn Valley were leaking and corroding badly internally. It was an easy decision to upgrade these tanks by applying a fibreglass lining system to the internal walls and floor. We brought in a local scaffolder to erect platforms up to the tanks for access and egress, enabling us to work safely throughout the repair and refurbishment. After the internal surfaces were scraped relatively clean we keyed the surfaces by grit blasting using Hodge Clemco JBlast Supa blasting as the media. After the preparatory gritblasting and priming, layers of woven fibreglass and chopped strand fibreglass matting were applied to the surfaces and wetted out with Lloyds approved isophthalic polyester resin. The cured fibreglass lining was completely sealed with an isophthalic gel topcoat protecting the surfaces for at least the next 25 years. SPRINKLER TANK REPAIR - SHEFFIELD This 30 year old sprinkler tank was leaking badly. The tank was rusting from the inside out. The original factory coating system had broken down completely and the rust had taken over. The only repair system that was going to restore this tanks integrity was the application of our guaranteed for 25 year fibreglass lining system. Initially the only way into the tank was by accessing the roof through the BVH (Ball Valve Housing) and then a ladder down into the tank, onto the tank floor. We installed an access manway into a lower wall panel at ground level for safe access and egress. First things first...the surfaces had to be cleaned and keyed by abrasive grit blasting. This process exposed all the weaknesses in the steel wall of the tank and highlighted the areas for repair...lots of them. After abrasive cleaning the surfaces were primed with polyester resin. All the holes, corroded areas and panel seams were repaired and reconstructed using layers of fibreglass matting. Once all the repairs had cured, a double skin fibreglass lining was applied to the internal wall area, sealing onto the concrete floor all the way round the inside corner of the tank. When the completed fibreglass lining application had cured, a coloured polyester gel topcoat was applied to seal the whole system guaranteeing our works for 25 years. A week after starting our works... we bolted up the new access manway and the client put the tank back into service. BRAITHWAITE TANK REPAIR / LINING - SOUTH WALES This Braithwaite water tank had been leaking for some time. Our client had been welding patch repairs over the leaks from the outside to good effect. But this practise was becoming impracticable and they wanted a repair system that would last for at least the next 20 years. The tank was drained and inspected internally. It was found that the original factory coating was breaking down, causing the internal surfaces to corrode. Because of the bad condition of the tank, it was decided to apply a reconstructive fibreglass lining covering the internal walls and floor. The internal surfaces were all keyed by abrasive sand blast cleaning. The preparatory works removed what was left of the original bituminous coating. A specialist resin primer was then applied to the cleaned surfaces, before repairs were made to the holed and eroded areas. The fibreglass lining system was then applied over the repairs to the complete wall and floor surface area. PLANT ROOM BUND - NORTHAMPTON This 1st floor plant room bund was proved to be leaking after our client had carried out a water evaporation test. The internal surfaces of the bund had been coated with bituminous paint that was not chemically resistant to the hydraulic oils contained within the bund. The existing coating was removed from the concrete surfaces of the bund using a HILTI concrete grinder fitted with a diamond disc and connected to a dust vac. The cleaned and keyed surfaces were primed with a solvent free epoxy floor sealer. The final application of 2 coats of an oil resistant glass flake epoxy system ensured watertightness for at least the next 10 years. FIBREGLASS TANK REPAIR - MANCHESTER These fibreglass tanks were transported from Italy on the back of a low loader. Unfortunately one of them got damaged on route. The damage was not initially visible. The tank was installed and pressure tested before going into production. The testing highlighted some small hairline cracks As fibreglass repair specialists, we knew we could carry out the repairs required to guarantee air tightness and get the tank on line within days. The stressed areas were very visible from inside the tank. The 'spiders' were in random areas so it made sense to apply a reconstructive system to the complete wall and floor area. We carried out abrasive sand blasting to the internal surfaces to create a good key for the localised fibreglass repairs and new fibreglass lining to adhere to. Layers of reconstructive fibreglass were applied to the stressed areas. When the repairs had cured, a chemical resistant double layer fibreglass lining system was applied to cover the complete internal surface area to reinstate the tanks integrity. SPRINKLER TANK REPAIR - BELFAST An internal inspection of this fire sprinkler tank was made using an ROV at the instruction of our clients insurance company. The 10 year inspection showed that the mastic jointing at the panel joint seams had perished and that the Z purlins supporting the roof and vortex inhibitor were corroded. Our client stored a lot of combustable materials on site, consequently their insurance company insisted that this fire water tank should be in good condition and be ready should a demand be made on it. The glass enamelled internal wall surfaces were still in excellent condition. Therefore we only needed to make repairs to the vertical and horizontal panel joints where the jointing had eroded. Before the application of our fibreglass system could be made we had to prepare the surfaces by abrasive grit blasting. We always want to apply systems that we can guarantee watertightness and longevity. So it was an easy decision to encapsulate all the vertical and horizontal bolted panel joints with a fibreglass lining system and apply a zinc rich cathodic coating system over the steel work. This picture shows the full encapsulation of the sectional panel joints using our guaranteed watertight fibreglass lining system. It was a bit wet, cold and windy in Belfast when we were there in November. We needed to hire in an indirect diesel heater to keep the temperature inside the tank above 5c. Thanks to HSS for all there help in sourcing and supplying. GRAIN SILO REPAIR - SUFFOLK These grain silos in Suffolk were badly corroding where the corrugated silo wall meets the ground, consequently eroding and eventually allowing water and wildlife into the silo from the outside. From inside the silos daylight is very visible where the internal corner had rotted out. The internal steel wall and concrete floor corner was sandblasted to create a good key. The keyed surfaces were protected for 20 years by applying our fibreglass lining system. This guaranteed that the stored grain would be kept dry and no water or wildlife could damage the goods within. FIRE WATER TANK REFURBISHMENT - YORKSHIRE This vertical cylindrical cold water storage tank wasn't leaking, but as you can see the internal surfaces needed refurbishment to reinstate the tanks integrity. The tank stood at over 8m high so we got confined space trained scaffolders in to erect safe working platforms around the internal perimeter. The scaffolders made a great job giving us access to the walls. The internal surfaces were cleaned and keyed by sand blasting. We used recycled glass as our blasting media. When the surfaces prepared we applied our fibreglass lining system to the complete wall area, sealing onto the concrete floor . This system offered our client a maintenance free finish that will last for at least the next 20 years. EFFLUENT TANK REPAIR - NORTHERN IRELAND The internal wall floor corner seal on these 2No. effluent tanks had broken down and needed removing and replacing. Project Linings Ltd were contracted in to remove the cracked and delaminated epoxy coating and replace like for like. The concrete floor surfaces were cleaned and keyed by concrete grinding all the way round the internal perimeter corner of the tanks. The internal corners were resealed with Sika TSPlus and two coats of effluent resistant glass flake epoxy were then applied over the primed concrete surfaces. Both tanks were bolted back up and back in service within the week. COLD WATER STORAGE TANK REPAIR - WEST MIDLANDS This old cast iron cold water tank in the West Midlands needed complete refurbishment, aside and out. The tank was being fed by a bore hole, consequently there was plenty of sludge inside. Once the sludge was physically removed from within the tank, we cleaned and keyed the internal surfaces by grit blasting. This process removed all the rust and exposed all the underlying weaknesses with the tank. We used Hodge Clemco JBlast Supa blasting media to get the key we needed. The keyed surfaces were primed with polyester resin. When the primer was cured we repaired all the holes and reconstructed the corroded areas using layers fibreglass matting supported by gap filling paste and a WRAS approved polyester resin. When all the repairs had been made and cured we applied the fibreglass reinforcement matting to the walls and floor area of the tank. The reconstructive fibreglass matting was impregnated with Lloyds approved polyester resin. When the fibreglass lining had cured, a polyester gel topcoat was applied to the surfaces sealing the lining and ensuring water tightness. OIL TANK ANNULAR RING REPAIR - MIDDLESBOROUGH These heavy oil storage tanks in Teesside were corroding badly around the annular ring/ external apron. They needed immediate attention to protect them against further corrosion and the possibility of the tank leaking oil into the bund. The steel wall of the tanks and concrete aprons were sandblasted to clean & key, ready to take the fibreglass application. We applied our reconstructive fibreglass lining system up the tank wall and across the concrete plinth to ensure complete rainwater run off. This long term solution was applied to both tanks in this oil storage bund on Teesside. UNDERGROUND DIESEL TANK CLEANING - LONDON Project Linings were asked by a London Councils insurance company to carry out the annual inspection and cleaning of 2their underground diesel storage tanks. Our client had run down the tanks to virtually empty. we arrived on site, open the tank lids and pumped out the residue diesel. With all the health and safety in place and wearing the correct PPE for working in confined spaces, we safely accessed the tanks. The tanks internal surfaces were washed down with specialist detergents and wiped dry. All the dirty diesel and washings were removed from the tanks and safely disposed of off site with waste transfer notes being handed back to the client. Both tanks were opened, cleaned, closed, refilled and put back on line the same day. WATER TREATMENT TANK COATING - NOTTINGHAM The overall condition of these concrete wastewater tanks was good, apart from few settlement cracks at the internal corners and the expansion joints needing re sealing. After preparatory sandblasting using recycled glass as a media, we carried out the necessary concrete repairs and mastic sealing using Sika construction products. We were lucky with this project, we had great weather for the whole week. Perfect conditions for applying our glass flake epoxy coating system. CHEMICAL BUND LINING - LEEDS This chemical bund of concrete block construction, was not holding water so there was little doubt it would contain any chemical spill within. After preparatory sand blasting we applied layers of fibreglass matting to the surfaces and impregnated them with chemical resistant vinyl ester resin. TANK MODIFICATIONS - MANCHESTER These fibreglass fermenting vessels in Manchester were being upgraded and having aeration systems fitted inside them. The tank walls needed thickening in places to be able to handle the new intrusions. We reconstructed the areas with layers of fibreglass where the new stainless pipework was going to pass through the tank walls and be tightened on both sides. EFFLUENT TANKS MASTIC SEALED - BRISTOL These new stainless steel effluent/aeration tanks needed the sectional panel joints mastic sealed with Sikaflex TS Plus to ensure their watertighness. The stainless wall had to be chemically primed and the concrete floor mechanically prepped and primed to promote the adhesion of the product to be applied. The TS Plus was mechanically gunned on and evened off with spatulas leaving a nice tidy job. SILO REPAIRS - SUSSEX As you can see we lucked into a good week of weather to repair these grain silos. We were onsite to make repairs to the internal wall that had rotted out and was letting water in from the outside. Access and egress from inside the silos was safe and made the project less of challenge. The drying floors sat about 500mm up from the concrete floor substrate and had to removed so we could get to the lower wall. The wooden supports were also removed to make the job a lot more doable Once all the floor was removed, the damage was very visible. The internal wall floor corner had rotted out and was letting rainwater and vermin in from the outside. After sandblasting the corrugated tin wall and concrete floor, we applied our fibreglass lining system. This ensured the grain in these silos was never going to get wet again and also protected the stock from vermin.