A recent 8 month long Darke Engineering project in Aberdeenshire required the reinforcment of an existing pipeline with 1.8km of 12” 300NB high pressure gas pipeline, operating at a MOP of 69.0 bar.

The route ran alongside the existing 10” 250NB pipeline and crossed it at 2 points.

The South connection required the existing pig trap flanges to be removed by cold cutting and the pipeline commenced with a golden weld and the North connection included pig trap connection to facilitate inline inspection. There was also a connection to the existing 250mm pipeline using a hot tap and under pressure drilling.

Minimum cover of 1.2m.

The route was 1.8km in length and laid at a minimum cover of 1.2m. and along the pipeline route there were several special crossings, requiring Heavy Wall pipe and machined transitioned sections.

Contact Darke Engineering now for more information

For more information please contact Darke Engineering on +44 (0)1733 246 907 or email: for a competitive quote for your project.


Jericho to Glens of Foudland HP Pipeline


Scotia Gas Networks


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