A power outage on board the Oseberg field centre in the North Sea has led to a gas leak, and all production on the field has been shut down.
The leak was stopped, but the field centre has subsequently experienced additional power supply problems.The facility was shut down in accordance with procedures, the emergency response organisation was mobilised, and the people on board mustered to the lifeboat stations. The onshore emergency response organisation was also mobilised. Power was restored by 18.30, the gas leak was stopped and the situation was gradually returned to normal.
During the subsequent start-up of the facility, gas detectors on Oseberg A indicated that gas was present. The alarm was triggered again just after midnight. The facility was depressurised and personnel mustered to the lifeboats. The gas detectors quickly returned to normal levels, and the situation was resolved without further mobilisation of the emergency response organisation.
Following this, the Oseberg field centre experienced another power failure, with loss of main power. It took some time to re-establish the main power supply. During this period, the emergency power unit on board handles the emergency preparedness systems, provides light and limited communications. Measures were also initiated to safeguard the personnel on board, as the heating unit was not in operation.
Statoil says oil and gas production remains shut down. Crews are working hard to restore stable main power supply on board so that the heating unit can be started, personnel can be taken on board, and activities resumed.
(NRK/Aftenposten)
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