As construction of the Main Onshore Pipeline (the Pipeline) progresses, our construction contractor, United Infrastructure, is installing cathodic protection measures as one of the methods being used to ensure the integrity of the Pipeline during its operational life.
For the Pipeline, the electrical current will be supplied by equipment known as transformer rectifier units. These units provide the controlled electrical current needed for the cathodic protection system to work.
During the works, you may see increased activity including:
Further information will be provided in advance on the latest news section of the HyNet Hub, should any temporary traffic management measures or changes to access be required.
What is cathodic protection?
When metal pipelines are buried underground, they naturally come into contact with soil and moisture, which can cause the metal to corrode over time. Cathodic protection is widely used within the pipeline industry to help prevent this. It works by applying a small electrical current to a pipeline, helping to protect the metal from the natural corrosion process.For the Pipeline, the electrical current will be supplied by equipment known as transformer rectifier units. These units provide the controlled electrical current needed for the cathodic protection system to work.
What works are taking place?
As part of these works, equipment such as test posts and bonding boxes will be installed at locations along the Pipeline route. Test posts allow the system to be checked, and bonding boxes form part of the electrical connections used by the system.During the works, you may see increased activity including:
- excavating sections of the Pipeline trench
- installing underground cables and test posts
Further information will be provided in advance on the latest news section of the HyNet Hub, should any temporary traffic management measures or changes to access be required.