United Kingdom-Bradford: Sewage digesters
Contract notice – utilities
Section I: Contracting entity
Main address: www.yorkshirewater.com
Section II: Object
Nitrogen Purging and Digester Maintenance
Yorkshire Water (YW) manage the collection, treatment and distribution of water in Yorkshire, supplying around 1 240 000 000 litres of drinking water each day. At the same time collecting, treating and disposing of about one billion litres of waste water safely back into the environment. The contract will be part of the Asset Integrity team’s delivery of process safety works. A range of specialist technical services will be selectively employed across YW’s estate to support applications and processes for raw water, treated water, waste water, sewerage treatment and clean and sewer networks. These services are vital to supporting safety and compliance across YW’s business. This directly links to the business commitments and performance measures contained within Yorkshire Water’s business plan. YW therefore intends to establish a framework for Nitrogen Purging and Digester Maintenance.
Across all Yorkshire Water sites.
Yorkshire Water are looking to establish a framework covering services relating to Nitrogen Purging and Digester Maintenance. Broadly the scope falls in to 3 main areas.
1) Gas purging of primary sludge digesters, gas holders and associated pipework within the current asset profile;
2) Interior cleaning of digesters, pre-and post-digestion vessels including consolidation, buffer, pathogen kill, pre-dewatering and storm tanks, lagoons, ASP lanes and ditches, where cleaning and separation of materials is required;
3) Carrying out refurbishment works to digesters and gas holders that includes decommissioning and re-commissioning, repairs and recoating of any concrete, using approved coatings to seal concrete, repair and or replacement of steelwork, design works to facilitate refurbishment, repair and or replacement to any pipework (sludge and gas) and sign off/certification to finalise works.
During the course of the contract life the services will support AMP7 delivery period where there will be an expected annual spend of c. 500 000 GBP for at least 5 years. The contract will be single source with the successful supplier being able to provide all the required services across the entire range of YW’s assets. The works will consist of reactive works and larger planned schemes.
The initial contract term will be for 60 months, YW reserves the option to extend for a further 36 months based on satisfactory performance of the contract by the service provider. Further details will be sent out in the procurement documents.
The estimated value figure is based on the full contract term including renewal. (i.e. 60 months + 36 months' option = 96 month term).
Section III: Legal, economic, financial and technical information
Section IV: Procedure
Section VI: Complementary information
The Contracting Authority reserves the right to cancel the procurement and not to proceed with the award of any contract at any stage of the procurement process and/or to award only part or parts of any contract. Save for any mandatory periods, the timescales indicated in this notice are indicative and the Contracting Authority reserves the right to amend the same.