CONTRACTOR CONTRACTS


Wessex Water n ‘Strategic Grid’ Framework (from April 2010 for 5 years plus possible extensions)


n ‘Network Framework’ Contract (from April 2010 for 5 years plus possible extensions)


Anglian Water


Two long-term contracts in East Region – Water Meters and R&M of Water Infrastructure Assets


Essex and Suffolk Water Lot 6 and Lot 7


Bristol Water


New Lay Trunk Mains Framework Severn Trent Water


Sewerage Services Contract – East Region


Morrison Utility Services Yorkshire Water


n Water Networks Capital Delivery including renewals and rehabilitation


n Water Networks R&M and Metering Services Southern Water


MEICA Services – Water and Wastewater


Thames Water n Developer Services– Water and Wastewater – JV with Cappagh


n Capital Programme– South London – Water and Wastewater in joint venture with Galliford Try


Mouchel Veolia Water Central


Meter Reading and Data Collection Services


Essex & Suffolk Water Leakage Detection Services Severn Trent


Leakage Detection and Support Services Thames Water


Lot 21 Leakage Framework South East Water


Leakage Detection and Associated Services


Nomenca Severn Trent Water


Non–Infrastructure (as part of NMC–Nomenca), Fluoridation Framework


Wessex Water


AMP5 Workstream EM&I Contractor United Utilities


Minor Works Alliance Framework, HV Framework, EaWR Framework, Runcorn GBT’s


Scottish Water


Chemical Dosing Framework Yorkshire Water


Chemical Dosing Framework Bristol Water


Pumping Station and Service Reservoirs (pre-approved register)


Environment Agency


M&E Framework (North Wessex Region) Thames Water


LV Framework, Disinfection Dosing Framework, Deephams Inlet Works


XVIII Consultant and Contractor File January 2011 CRL completes refurbishment of historic water towers


Anti-carbon coating was spray applied


Specialist contractor Concrete Repairs Limited (CRL) has recently completed the full internal and external refurbishment of two historic water towers for Sutton & East Surrey Water. In a contract worth £430,000, CRL tackled the refurbishment in four phases.


The external works were carried out during the summer months, and the internal repairs and lining of the bowls during winter when the risk of water shortages was reduced. An initial hammer survey and visual inspection of all the external concrete surfaces on each tower helped formulate CRL’s approach to the refurbishment of each tower. “Both water towers presented a very specialist challenge,” explains Mike Balletta, infrastructure manager for CRL. “They were originally constructed in 1930 from


conventionally reinforced concrete, and very little major maintenance has been carried out since then. From Sutton & East Surrey Water’s point of view, the repair works were an important and necessary intervention to prolong the working life of both towers and maximise their operability. The location of the two towers – one on private farmland and the other in a protected woodland area – meant that for CRL the environmental issues at both sites were a key criteria in our approach to the works.” It was vital to ensure that a supply of clean, safe potable water to the local distribution network was maintained without compromise. This meant that only one tower could be emptied and its interior worked on at one time. The external works, comprising the exterior of the towers, over the roof parapets and including the enclosed area under the bowl, involved the identification and repair of all spalled and cracked concrete, the preparation of all concrete surfaces and the application of an elastomeric anti-carbonation coating. Because of the vast areas to be coated with the anti-carbonation coating, CRL needed to investigate and deliver an innovative/cost effective means of application. After extensive trials of different machines, over 2,000m2 of the coating (three coats) was spray-applied in just 10 days. According to the manufacturer of the coating, this was the first time this particular coating had ever been spray-applied. External works also included preparation of the domed roof over the bowl and application of a WRAS approved anti- slip waterproof membrane over the old existing asphalt.


The interior refurbishment comprised the removal of the existing asphalt linings, carrying out necessary repairs to the walls and floor, grit blasting all the surfaces and relining with a DWI approved polyurea system suitable for potable water structures. Repairs to all spalled and cracked concrete and the application of a protective coating to the internal soffits and beams was also necessary. Finally, stainless steel internal ladders were fitted to enable easy access and egress into the towers in the future.


Anglian Water Local Delivery Partner Framework


South West Water M&E Framework


OnSite Central Wessex Water


Sewer Assets Survey Term Agreement


Severn Trent Water n Network operations Framework n CCTV framework – Until March 2011


Anglian Water CCTV Framework


Environment Agency n Midlands Culvert Inspections Framework


n South West Culvert Inspections Framework n Southern Culvert Inspections Framework


Yorkshire Water CCTV Framework


Skanska


Construction UK Anglian Water


n Wastewater & Water Non–Infrastructure n Working on @one Alliance in a joint venture with Aker Solutions


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