PSA Probes Eldfisk Hydrocarbon Release

 Accident, Accident Investigation, Offshore  Comments Off on PSA Probes Eldfisk Hydrocarbon Release
Aug 142014
 

eldfiskNorway’s Petroleum Safety Authority, PSA, says that it is going to carry out its own investigation into a hydrogen incident early on the morning of Thursday 7 August, which led to the discharge of stabilised oil to the sea from the Eldfisk FTP field terminal platform.

PSA says its decision to launch its own investigation “reflects the seriousness of the incident and the information received about it. Among other goals, the inquiry will seek to establish the course of events, identify the direct and underlying causes, and follow up ConocoPhillips’ own investigations of the ESD and leak”.

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PSA Slaps Statoil For Most Serious Hydrocarbon Leak

 Accident, Accident report, Offshore, Pollution  Comments Off on PSA Slaps Statoil For Most Serious Hydrocarbon Leak
Dec 242012
 
The hydrocarbon leak occurred in connection with the testing of two emergency shutdown valves (ESDVs) on Heimdal’s HMP1 production, drilling and quarters platform. Photo: Norwegian Petroleum Directorate.

The hydrocarbon leak occurred in connection with the testing of two emergency shutdown valves (ESDVs) on Heimdal’s HMP1 production, drilling and quarters platform. Photo: Norwegian Petroleum Directorate.

Norway’s Petroleum Safety Authority Norway, PSA, has notified Statoil of an order after its investigation of a hydrocarbon leak on Heimdal on 26 May 2012. The leak is described as among the most serious for several years on the Norwegian Continental Shelf.

The report identifies serious non-conformities from the regulations which are significant for safety. PSA wants Statoil to confirm that “a lack of effect” is not present on other Statoil platforms.

The hydrocarbon leak occurred in connection with the testing of two emergency shutdown valves (ESDVs) on Heimdal’s HMP1 production, drilling and quarters platform.

To prepare for the test, a pipeline was to be depressurised to the flare. This contained a ball valve with a 16-bar pressure class as the final barrier against the flare. Because it was closed, the valve experienced a pressure of 129 bar.

Gas leak
The pressure caused the seal in the valve flange to fail, resulting in a gas leak estimated at 3 500 kilograms. The initial leak rate was 16.9 kilograms per second (k/s). Gas was detected across a large area of the installation.

This leak ranks among the most serious gas emissions on the Norwegian continental shelf (NCS) for several years. See the RNNP reports on trends in risk level in the petroleum activity for 2001-11. Continue reading »