The inspection involved a 24-inch diameter pipeline which transports natural gas from the National Grid Gas Blyborough NTS junction through E.ON UK's Blyborough installation to a pressure reduction centre located at the Cottam Power Station. The pipeline then delivers gas to the Cottam Development Centre). The pipeline stretches 23.4 km in total.

The operation on the pipeline follows closely on the heels of an inspection in April 2011 of a line stretching from Burton Point AGI to Connah’s Quay Power Station. T.D. Williamson (TDW) said the operation was especially delicate given the proximity of an important nature reserve.

Both of these operations were carried out as part of a multi-site contract awarded to TDW by E.ON in August 2010. These operations support E.ON’s strategic program to ensure the integrity of its pipelines and assets.