Echo Square Services recently completed the internal tank reline and refurbishment of two GRP cold water storage tanks in Mayfair, London.
The internal gel coats of both GRP water tanks had been compromised by black spore osmosis (dark spots) which is non-compliant with ACOP L8’s technical guidance HSG274 (page 26)
Initially both water tanks were isolated and drained prior to placing the cold water services onto the buildings mains water system via a previously installed mains bypass.
The internal surfaces of each cold water storage tank required extensive preparation to remove the compromised gel coat and black sporing.
Once the preparation of the GRP water tanks internal surfaces was complete, two coats of WRAS approved ES 988 DWPU polyurethane coating was applied to all internal surfaces.
Our operatives then disinfected both water tanks prior to removing the buildings cold water services from the mains water system and placing the tank fed cold water services back online.