H&V was appointed to carry out the live replacement of 6no CWS storage tanks across three 1930s, occupied residential blocks, Eton Rise, Eton Hall and Eton Place, each housing over 100 flats.

Services needed to remain live throughout the project and temporary MCWS supplies were provided to existing CWDS pipework in a phased manner whilst removal of existing tanks and installation of new tanks were being carried out. Due to the age and condition of the existing galvanised system, close liaison was required with residents and site porters to ensure water services were kept live during operations and equipment changeovers.

A later instruction included cutting in localised branch isolation valves to each distribution riser service on each roof. Our works included asbestos cleaning of pipework and close liaison with residents when shutting services down. Various shutdowns/changeovers of new and temporary services were restricted to critical daytime timescales.

Tank replacement works included:

• Close tenant liaison
• Removal of Galvanised Steel Tanks
• Supply and installation of new GRP Sectional Tanks
• Extension/modifications of localised MCWS and CWDS PVC-C pipework
• Thermal Insulation
• Asbestos removals
• Tank Room Lighting
• Refurbishment of Primary steel Tank Supports
• Decoration of tank room floors

Roof access was poor and phased critical crane lift operations to each roof were required:

• Liaison with tenants inc. shutdown/isolation of residents parking areas
• Removal of the broken-down Tanks
• Lifting of new Tanks
• Lifting of new pipework and materials