ABSTRACT:

The paper presents the main features and challenges of the pre-commissioning operations on the Blue Stream pipelines, two 24" ND pipeline connecting Russia to Turkey crossing the Black Sea and reaching a water depth in excess of 2,000 m. The focus will be on:

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    The selected pre-commissioning philosophy and the main design efforts during the Project engineering phase.

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    The characteristics of the mobilised temporary pre-commissioning spread and the main features / operating parameters of the implemented field operations.

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    The valuable tight interface achieved between the engineering team and the on-site operating team.

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    The lesson learned for future deep-water gas line pre-commissioning

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