Water

Water Division

GMC Utilities Group has significant experience in the design, management and implementation of water projects.

Our range of capabilities include:

Horizontal Directional Drilling (HDD)
Horizontal Directional Drilling is a steerable trenchless method of installing underground pipe, conduit, or cables in a shallow arc along a prescribed bore path by using a surface-launched drilling rig, with minimal impact on the surrounding area. The mains benefits of HDD are the reduction in excavation and subsequent backfilling and reinstatement. HDD is particularly advantageous of river crossings, railway crossings, highway crossing and roundabouts.

Slip Lining
When existing capacity is sufficient, slip lining is a relatively cost-effective rehabilitation method in which a pipe is inserted into an existing line by either pulling or pushing continuous or short-length pipes, frequently HDPE pipe. With traditional slip lining, a lead-in trench is excavated for installation and pipes are butt-welded on the surface of the ground before being winched or jacked into the existing pipe.

Pipe Bursting
Pipe bursting uses a pneumatic or hydraulic bursting mandrel to crush an existing pipeline while pulling a new pipe into place. The crushed pipe is forced into surrounding soils, acting as bedding material for the new pipe. A sleeve pipe is pulled immediately behind the bursting mandrel during the process. When complete, the sleeve pipe is lined with a new pipe, typically HDPE. Pipe bursting is well suited to brittle pipes and allows for the size-for-size or increased size replacement of the existing pipe.

Leak Detection
Our leak detection survey uses the latest non-intrusive techniques for surveying underground pipework. It will typically combine manual and electronic detection methods to help identify problems.

 

Recent Projects:

Client: Irish Water
Contract:     Water Network Management – Services and Works
Commenced: 2017
Status: Ongoing

A design and build contract for eight Local Authority areas (Dublin City, Fingal, South Dublin, Dun-Laoghaire Rathdown, Meath, Longford, Louth and Westmeath) for targeted leak reduction activities including:

DMA (District Meter Areas) Establishment and Validation
Survey to Establish Baseline leakage levels in targeted DMA’s
Find & Fix Water Leaks
Water Network Pressure Management
Water Mains Rehabilitation by open cut and trenchless technology techniques
Renewal of Shared Services, Backyard Services and Lead Services
First Fix Programme
Water Network Rationalisation
Establish and report on Leakage savings associated with all works undertaken


Client: Irish Water
Contract: Monaghan Watermains Rehabilitation
Commenced: 2017
Completed: Ongoing

The replacement and rehabilitation of 9.1 km of ageing water mains in the Monaghan Town (4.8km) and Clones (4.3km) areas. The project also includes the replacement of 430 customer service connections and 134 common backyard services as well as the removal of any lead pipework encountered on the public-side of the water distribution network.


Client: Irish Water
Contract: Dundalk Watermains Rehabilitation
Commenced: 2016
Status: Ongoing

The replacement and rehabilitation of 9.4 km of aging water mains in Dundalk Town and the surrounding environs. In addition, the renewal of customer service connections and common backyard services.


Client: Irish Water
Contract: Domestic Water Metering
Commenced: 2013
Status: Completed

A joint venture with Sierra Support Services (GMC Sierra) for installation of over 400,000 water meters and boundary boxes across Dublin City, Wicklow, Kildare, Offaly, Laois, Mayo, Roscommon, Donegal, Sligo and Leitrim. In addition to the metering works, we carried out 16,000 leak investigations and over 3000 leak repairs for Irish Water’s First Fix Free programme to eliminate leaks on the private side of water supplies.