Project Summary
Coffey was appointed for the design, construction, commissioning and handover of the Graigcullen Water Supply Scheme. The project included a 1,850 m³ precast concrete reservoir, a treatment plant, water mains, connection to the existing public supply network and associated buildings and site works. Two boreholes were developed into production wells, providing 1,500 m³ of potable water per day to the local network.
Project Description
The scheme involved extensive civil, mechanical and electrical works. A treatment and control building was constructed to house fluoridation, chlorination and manganese treatment facilities, along with welfare and control facilities. New borehole pumps and mains were installed, linking the wells to the treatment plant and onward to the reservoir. From the reservoir, booster pumps and distribution mains were installed to connect to the existing public supply network, including a reserve distribution connection.
The works also included a standby generator and bunded fuel storage, a dedicated chemical storage area, and the installation of all necessary control, monitoring and instrumentation equipment. The reservoir and well-head compounds were completed with security fencing, paved access roads, hardstanding, kerbing, drainage and landscaping.
Scope of Works
The works included:
- Two production wells with submersible borehole pumps, wellheads and kiosks, each with pressure, flow and level monitoring.
- Supply main from wells PA01 and PA02 to the treatment and control building.
- Treatment and control building with fluoridation, chlorination and manganese treatment facilities, and control and welfare areas.
- Booster pump and rising main from the treatment building to a new 1,850 m³ precast concrete reservoir.
- Distribution mains from the reservoir to the existing public supply, including a reserve connection.
- Power supply and ESB meter connection kiosk, standby generator and bunded fuel storage.
- Bunded chemical storage for hydrofluosilicic acid.
- Reservoir and well-head compounds with fencing, access roads, drainage and landscaping.
- Installation of all associated pipework, valves, meters, hydrants, actuators, controls and instrumentation.
Technical Highlights
- Design and construction of a new 1,850 m³ precast concrete reservoir.
- Full MEICA design including process and instrumentation systems.
- Development of a functional design specification and controls philosophy.
- Installation and integration of SCADA systems for automated process control.
- Delivery of 1,500 m³/day of potable water into the local network.
Added Value
- Phased commissioning ensured uninterrupted water supply during integration.
- SCADA system design and integration provided full automation and resilience.
- Comprehensive O&M manuals with commissioning data handed over to client.
Environmental, Safety or Community Measures
- Secure reservoir and well-head compounds with landscaped surroundings improved site integration with the local environment.
- Bunded fuel and chemical storage facilities provided enhanced environmental protection.
- Monitoring and control systems ensured consistent water quality and reliable service to the local community.
To learn more about Coffey’s work in water and wastewater management, or to discuss future opportunities, please contact us at 091 844356 or info@coffeygroup.com.
