Wastewater Treatment Plant Construction Work Tenders & Contracts

The Contracting Entity intends to undertake a competitive tendering process, the objective of which is to appoint suitable Works Contractors to deliver the Greater Dublin Drainage (GDD) project. The project is divided into the following lots: Lot 1 - Orbital Sewers (MW 1), Lot 2 - Outfall Pipeline (MW 2) and Lot 3 - Wastewater Treatment Plant (MW 3). Full details are contained in the attached procurement documents.

The Contracting Entity intends to undertake a competitive tendering process, the objective of which is to appoint suitable Works Contractors to deliver the Greater Dublin Drainage (GDD) project. The project is divided into the following lots: Lot 1 - Orbital Sewers (MW 1), Lot 2 - Outfall Pipeline (MW 2) and Lot 3 - Wastewater Treatment Plant (MW 3). Full details are contained in the attached procurement documents.

The GDD Orbital Sewer (MW1) consisting of: - Abbottstown Pumping Station - 5.3km of Rising Main from Abbotstown to Dubber Cross - Dubber Odour Control Facility; and - Gravity sewer to the Wastewater Treatment Plant in Clonshaugh Full details are contained in the attached procurement documents

Scope & Description of requirementThe scope of supply is for the design, supply, installation, commissioning, and ongoing service and maintenance of Screens and Screenings Handling Systems across all Scottish Water operational areas, including remote regions such as the Highlands and Islands. The scope includes after-sales support, system testing, and operator training, ensuring a fully integrated and reliable end-to-end delivery.The Screens and Screenings Handling Systems shall be designed to ensure continuous, efficient, and compliant operation, supporting the removal, conveyance, and hygienic disposal of screenings in line with Scottish Water’s technical and environmental standards.Standards & RequirementsAll products supplied under this framework must comply with Scottish Water’s Requirements, which are subject to periodic updates. Suppliers are responsible for ensuring that all equipment and associated processes meet the latest applicable standards throughout the duration of the framework.Applicable StandardsEquipment must conform to:• Scottish Water Requirements (see below)• Relevant British Standards, including but not limited to BS EN 12255 for wastewater treatment systems• Water Industry Mechanical and Electrical Specifications (WIMES)• Dangerous Substances and Explosive Atmospheres Regulations (DSEAR) 2002, updated 2015All systems must integrate seamlessly with existing Wastewater Treatment Works (WwTW) infrastructure and SCADA systems and be capable of operating under variable flow and load conditions while maintaining compliance with discharge consents.Contract Duration4-year initial term with 2 x 2-year extensions options:• Lot 1: Screens and Screenings Handling - Approx £3.5m for initial 4 years term (£7m including extensions).• Lot 2: Sludge Screens and Screenings Handling - Approx £1.5m for initial 4 years term (£3m including extensions).The break points in the contract will allow SW to review the market and ensure the product is still fit for purpose and providing value for money.

Scope & Description of requirementThe scope of supply is for the design, supply, installation, commissioning, and ongoing service and maintenance of Screens and Screenings Handling Systems across all Scottish Water operational areas, including remote regions such as the Highlands and Islands. The scope includes after-sales support, system testing, and operator training, ensuring a fully integrated and reliable end-to-end delivery.The Screens and Screenings Handling Systems shall be designed to ensure continuous, efficient, and compliant operation, supporting the removal, conveyance, and hygienic disposal of screenings in line with Scottish Water’s technical and environmental standards.Standards & RequirementsAll products supplied under this framework must comply with Scottish Water’s Requirements, which are subject to periodic updates. Suppliers are responsible for ensuring that all equipment and associated processes meet the latest applicable standards throughout the duration of the framework.Applicable StandardsEquipment must conform to:• Scottish Water Requirements (see below)• Relevant British Standards, including but not limited to BS EN 12255 for wastewater treatment systems• Water Industry Mechanical and Electrical Specifications (WIMES)• Dangerous Substances and Explosive Atmospheres Regulations (DSEAR) 2002, updated 2015All systems must integrate seamlessly with existing Wastewater Treatment Works (WwTW) infrastructure and SCADA systems and be capable of operating under variable flow and load conditions while maintaining compliance with discharge consents.Contract Duration4-year initial term with 2 x 2-year extensions options:• Lot 1: Screens and Screenings Handling - Approx £3.5m for initial 4 years term (£7m including extensions).• Lot 2: Sludge Screens and Screenings Handling - Approx £1.5m for initial 4 years term (£3m including extensions).The break points in the contract will allow SW to review the market and ensure the product is still fit for purpose and providing value for money.