Construction work for water and sewage pipelines

Tender description

The Scope of Works includes for the design, build, testing and commissioning of the following: — orbital sewer from Blanchardstown, Dublin 15 in the NW of Dublin to the WwTP at Clonshagh (approximately 13,8 km), —— approx. 1 km length of gravity pipeline through Connolly hospital installed using trenchless techniques (1 800 mm internal dia., c. 10 m depth), —— approximately 5,4 km length of 1 400 mm dia. rising main, —— approximately 7,4 km length of 1 800 mm dia. gravity pipeline, — live connection of Catchment 9C to Orbital Sewer at Blanchardstown, including transferring flows from Leixlip, — interface and connection with wastewater treatment plant and Abbotstown pumping station for orbital sewer and outfall connection points, — interface and connection with marine outfall contract at Baldoyle Bay, — interception of existing sewers and provision of future connection points along Orbital Sewer pipeline route (As per PQQ Doc). The terrestrial pipelines (orbital sewer and land based outfall) are the subject of this competition and will be constructed utilising a Design and Build (DB) Contract. Scope of works for this competition. The Scope of Works includes for the design, build, testing and commissioning of the following:- — orbital sewer from Blanchardstown, Dublin 15 in the NW of Dublin to the WwTP at Clonshagh (approximately 13,8 km) —— approx. 1 km length of gravity pipeline through Connolly hospital installed using trenchless techniques (1 800 mm internal dia., c. 10 m depth), —— approximately 5,4 km length of 1 400 mm dia. rising main, —— approximately 7,4 km length of 1 800 mm dia. gravity pipeline, — live connection of Catchment 9C to Orbital Sewer at Blanchardstown, including transferring flows from Leixlip, — interface and connection with wastewater treatment plant and Abbotstown pumping station for orbital sewer and outfall connection points, — interface and connection with marine outfall contract at Baldoyle Bay, — interception of existing sewers and provision of future connection points along Orbital Sewer pipeline route, — interception of the existing live North Fringe Sewer and approximately 600 m of 1 500 mm dia. gravity pipeline to the WwTP site boundary using trenchless techniques, — approximately 5,4 km length of 1 800 mm dia. pressurised gravity outfall pipeline from WwTP at Clonshagh to Baldoyle Bay, — trenchless crossings along pipeline route including, but not limited to Dublin-Belfast railway, Baldoyle Bay, M1 motorway, N2 national primary road and other roads and rivers, — shafts, chambers, manholes, valves, access routes and ancillary works as required, — crossing of all utility services along pipeline route, — all designs, as-builts and updated models using BIM, — ancillary works relating to the design and construction of the terrestrial pipelines; carrying out roles of Designer, Project Supervisor Design Process, Project Supervisor Construction Stage and Contractor as per the Safety, Health and Welfare at Work (Construction) Regulations 2013. The information provided herein is preliminary only and will be superseded by the Invitation to Tender (ITT). Such information is offered in good faith for the guidance of Applicants, but no warranty or representation is given as to the accuracy or completeness of any of it, and the Contracting Entity and its advisers shall not be under any liability for any error, misstatement or omission. None of the information shall constitute a contract or part of a contract. The Contracting Entity does not make any guarantee in regard to any contract award and/or the volume or value of works to be procured and reserves the right not to follow up this PQQ in any way, and no expense incurred by any person in responding to this PQQ will be reimbursed.