Authorities investigate gas leak at Statoil's Mongstad, Norway's largest refinery

Source: Petroleum Safety Authority Norway

The Norwegian Petroleum Safety Authority has started an investigation of the gas leak at Mongstad on September 12. 

The discharge of LPG (LNG Liquefied Petroleum Gas) occurred in connection with regeneration and pressurisation of a reactor in the A-5000 installation at the Mongstad refinery. 

When the leak was discovered, the alarm was sounded, the area was cordoned off and personnel were evacuated. Emergency shutdown and blowdown of the installation was implemented. 

One person sustained minor injuries as a result of the incident. 

The PSA has appointed an investigation team consisting of three people. They will start their work at Mongstad on Tuesday, September 14. 

The purpose of the investigation is in part to ascertain the course of events and identify the triggering and underlying causes. The investigation will result in a report, which will be released at a later date.

The downstream facilities at Mongstad in Hordaland have been operational since the mid-1970s and currently consist of an oil refinery, an NGL process facility (Vestprosess) as well as a crude oil terminal. Statoil is operator for the operation, and the refinery is the largest in Norway.

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