UK-based Sheffield Forgemasters International (SFIL) has delivered two forged subsea emergency repair clamp bodies for oil states to be used on the Nord Stream gas pipeline.

Each of them will serve as a crucial emergency repair back-up for the 1,224km pipeline, which runs along the Baltic Sea floor from Vyborg in Russia to Lubmin in Germany.

Sheffield has designed the hydro-clamp to provide risk mitigation in case of a breach in a subsea pipeline.

"The size of the forging exceeded the known parameters for the designated material selection and required a new engineering solution."

SFIL group projects director George Brown said: "The Nord Stream clamps are hydraulically operated repair mechanisms, designed to reinforce the Nord Stream Pipeline at any required point along the Baltic Sea floor.

"The size of the forging exceeded the known parameters for the designated material selection and required a new engineering solution to make it possible."

The clamp consists of two matched halves, which can be locked around the pipeline to halt any leakage.

Prior to shipping to the Nord Stream project, the clamps will undergo testing at Oil States in Houston, Texas. There they will be reserved for emergency back-up use.

Nord Stream pipeline uses twin pipes which take 27.5 billion cubic metres of natural gas per annum from the Russian continent to the European grid.

The gas will be used in European domestic and business markets.

Nord Stream owns and operates the pipeline and is a conglomerate of Gazprom (51%), Wintershall (15.5%), E.ON Ruhrgas (15.5%), NV Nederlandse Gasunie (9%) and GDF Suez (9%).