Skip links

Turkstream Dropped Object Culverts

Client: Allseas

A new pipeline system to export gas across the Black Sea involving:

  • Two 32” pipelines (925km) from Anapa (Russia) to Kiyiköy (Turkey)
  • Two micro tunnel pipeline sections at Russian side
  • Two Above Water Tie-Ins at Turkish side

Prior to the pull-in both ends of the pipeline at the Russian side had to be shielded and protected from dropped objects such as anchors.

Subcon scope

Subcon was contracted to design, engineer and fabricate ten (10) culverts to protect the pipeline from dropped objects.

The engineering of the culverts was done inhouse, all fabrication was done locally in Turkey, close to the loadout port in Samsun to minimise transportation costs. Subcon produced 10 of these structures in just 10 days.

Download Case Study