Anglian Water has gone out to tender with an AMP7 contract for pipeline commissioning services worth an estimated £4 million.

With the significant constraints on regional water availability, Anglian Water has developed a low-water commissioning strategy for large diameter pipelines to reduce water footprint, reduce carbon in the production of commissioning water and to allow large pipelines to be prepared for "into supply" service in parts of its region where water in strictly unavailable to commission pipelines conventionally.

Main site or place of performance will be at agreed pre-planned commissioning locations along the strategic pipeline running from North Lincolnshire through to Essex - including ad-hoc discrete pipeline schemes set away from the main spine across the east of England

The approach to pipeline commissioning includes the application of a number of innovative methods in strategic pipelines of various diameters and of various materials of construction.

The innovative methods have been developed and received approval for use by the various Anglian Water asset standards and water quality Groups for SPA (Strategic Pipeline Alliance) according to an agreed protocol to manage risk to water quality and to demonstrate the integrity of the laid pipelines.

The order in which commissioning activities need to be deployed based on these approvals is:

1. Air swab washing

2. Air swab disinfection

3. Filling and sampling (by others) for water quality testing at the AWS laboratory

4. Pressure testing

5. Displacement of pressure test injection volumes & resampling (by others) for water quality testing at the AWS laboratory

6. Water into supply

Initial contract term is four years, with further extension options of up to four more years in total.

Time limit for receipt of tenders or requests to participate 12 December 2022 – click here to access the tender documentation.