Pipeline Commissioning Services · UK public procurement notice

With the significant constraints on water availability in the region in mind, AWS (Anglian

Water Services) 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 the AWS

region where water in strictly unavailable to commission pipelines conventionally.

This innovative approach to pipeline commissioning includes the application of the following

methods in strategic pipelines of various diameters and of various materials of construction

suited to the innovative methods. The innovative methods have been developed and

received approval for use by the various AWS 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