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South Stream Transport taps DNV GL for South Stream Pipeline certification

10th February 2014

South Stream Transport commissions DNV GL for the certification of the South Stream Offshore Pipeline

South Stream Transport commissions DNV GL for South Stream Offshore Pipeline certification

South Stream Transport has commissioned DNV GL for the independent certification of the South Stream Offshore Pipeline.  

DNV GL will become involved in the design, manufacturing, construction and pre-commissioning of the pipeline so that it can issue a Certificate of Conformity, proving the pipeline compliance with the norm DNV-OS-F101.

DNV-OS-F101 is an international standard for offshore pipelines which ensures that projects are designed, constructed and operated with due regard for safety and environmental protection.

The South Stream Offshore Pipeline will be made up of four underwater pipelines, each consisting of approximately 75,000 pipes with a diameter of 32 inches. In addition, each pipe will measure about 12 metres long and have a steel wall thickness of 39 mm. 

DNV GL will be immersed in all stages of the project, which will involve implementation, ranging from design to construction and completion of the pipeline.

In 2013, DNV GL already issued a Statement of Verification for the Front End Engineering Design (FEED) of the South Stream Offshore Pipeline.  

The company will also review the detailed design of the pipeline system to confirm its compliance with integrity and safety standards before construction starts.

During pipe production, inspectors from DNV GL will be present at the pipe mills to ensure that the pipes meet the required standards for the offshore pipeline. Previously, the organisation was also involved in the Manufacturing Procedure Qualification Tests (MPQT) that all potential pipe producers had to complete in order to qualify as a supplier. 

DNV GL will also monitor offshore construction on-board the pipe-laying vessels and inspect and verify the pre-commissioning process that takes place before the pipeline is taken into operations.

Having DNV GL involved at both the design and implementation stages of the project ensures that the South Stream Offshore Pipeline is built in accordance with the approved design and specifications, thereby validating its integrity and safety.


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