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Oil company fined £1m after investigation into gas release

Two tonnes of high-pressure methane gas was released on Boxing Day.

Fined: Failed gas pipe.
Fined: Failed gas pipe. HSE

An oil company has been fined £1.1m over a gas release that caused "significant and widespread damage" on Boxing Day four years ago.

Marathon Oil UK LLC has been handed the fine following an HSE investigation into the high pressure gas release on its Brae Alpha offshore platform in 2015.

Two tonnes of high-pressure methane gas was released after an eight-inch diameter high pressure pipework suffered a catastrophic rupture as a result on "Corrosion Under Insulation"(CUI).

Module 14 of the platform was badly damaged by force of the high pressure blast.

Aberdeen Sherriff Court heard that the incident occurred whilst most of the 100 personnel on the platform were gathered in the accommodation block, in readiness for their Boxing Day meal, and away from the source of the blast.

An investigation by HSE found that Marathon Oil had failed to undertake any suitable and sufficient inspection of the pipework that would have allowed the company to identify the risk and prevent the hazard from materialising.

These failures resulted in personnel onboard the Brae Alpha platform being exposed to an unacceptable risk of serious personal injury or death from fire and explosion.

The investigation also led to HSE serving an Improvement Notice on Marathon Oil in January 2016, requiring the company to implement an effective hydrocarbon pipework inspection and maintenance regime.

At Aberdeen Sheriff Court on Monday, Marathon pleaded guilty to breaching Regulation 4 (1) of the Offshore Installations (Prevention of Fire and Explosion, and Emergency Response) Regulations 1995 and Section 33(1) of the Health and Safety at Work Act 1974.

The company has been fined £1,160,000 as a result.

HSE inspector, Ahmedur Rezwan, said: "This incident is a further reminder of the ever-present hazards in oil and gas production, that if not rigorously managed can easily result in a potentially life-threatening event."

"Corrosion Under Insulation (CUI) is a well-known risk and this incident should not have occurred. During any normal period of operations personnel could easily have been working in, or transiting through Module 14, and they would almost certainly have been killed or suffered serious injury. The timing of the incident and fact that the gas did not ignite was fortuitous."

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