Nitrogen Purging, Digester Maintenance and Design of Biogas Systems

• Value: £4M

Lot 1 relates to the supply of Nitrogen Purging services on YWS assets including sludge digesters, biogas storage and ancillary systems. Lot 1 will include both planned and reactive works. It is expected that the contractor will take on Principal Contractor role as defined in the CDM regulations.

• Value: £16M

Yorkshire Water Services (YWS) are looking to set up a Framework Agreement for the supply of services for Nitrogen Purging, Digester Maintenance and Design of Biogas Systems. Bidders could be successful in lot 1 (Supply of Nitrogen Purging Services), Lot 2 (Supply of Services for Digester Inspection, Preparation, Maintenance, Refurbishment and Design of Biogas Systems), or lots 1 & 2 together if this represents the most economically advantageous tender. Lot 2 relates to the Supply of Services for Digester Inspection, Preparation, Maintenance, Refurbishment and Design of Biogas Systems. Lot 2 covers planned activities to enable the internal inspection and repair of digesters, including digester decommissioning & re-commissioning and related minor structural and mechanical repairs. Lot 2 will also include the design works to facilitate the re-design, new build or re-positioning of assets connected to YWS biogas systems. Nitrogen purging activities relating to works under this lot will be awarded within lot 2. It is expected that the contractor will take on Principal Contractor and Principle Designer role as defined in the CDM regulations.