Location: Ambarli, Istanbul, Türkiye
Client: Botaş

Project and construction management services were provided for the maintenance and repair of the underwater Türkiye-Russia natural gas pipeline, which was damaged due to a landslide at the sea entrance point of the Ambarlı pump station. A 300-ton capacity crane mounted on a floating barge was used to lift the damaged pipeline for repair welding over the sea. Following the repair operation, a 53-km-long, 30-inch diameter double line of the Marmara Sea transition was tested by launching a slightly smaller diameter plastic ball under high pressure between the Ambarlı and Pendik pumping stations.