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http://www.fortmcmurraytoday.com ... -and-pipeline-spill
1 T' g! p1 E% a) W4 f( TNexen Energy will lay off about 350 workers from its Long Lake facility, following its release of results of internal investigations into a July 2015 pipeline spill and the January 2016 hydrocracker explosion.
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* c2 N; T' ?* r9 t% `The CNOOC-owned energy company will only be continuing its steam-assisted gravity drainage (SAGD) operations at Long Lake, after it determined a short-term repair was not possible for the hydrocracker unit, which killed two employees when it exploded on Jan. 15, 2016.% p; ?2 I+ O0 X1 N1 n1 c5 J! S
2 i7 |* U0 z+ i7 u* uThe facility's upgrader has been idling since then, and will be moved into winter preservation, with no estimation of when it will be brought back into service.
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) F1 {8 ^: y* d2 ~( E$ G; g( fAn internal investigation found the explosion was a result of work being performed that was "outside of the scope of approved work activities.". G' `5 ?# X$ f0 ^( B
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The two employees killed, both Fort McMurray residents, were 52-year-old Drew Foster and 30-year-old Dave Williams. Foster was killed in the explosion. Williams, who was flown to the University of Alberta Hospital's burn unit hours after the explosion, died a week later. & T6 U. O2 e/ ^+ T- b5 N) J9 U
5 o( D0 p! W u* |( c7 |In its announcement Nexen said it is addressing safety gaps in part with refresher training on workplace hazard identification, increased site supervision and safety inspections.
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The decision to move to a SAGD-only operation was described as "entirely economic," and will result in about 350 staff layoffs, most of which will be completed by the end of 2016.
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2 I5 \: C: d# D/ q. l$ VThe results of the investigations were given at a news conference on Tuesday by Nexen CEO Fang Zhi and Senior Vice President of Canadian Operation Ron Bailey./ ^# O8 [- \* ]/ b* m# w/ I3 Y
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Nexen also said it found the root cause of a July 2015 emulsion spill at Long Lake to be a "thermally-driven upheaval buckling of the pipeline, and the subsequent cooldown during the turnaround."& W# X- ]$ U* x* p5 F
3 ^5 o# o3 B2 {% NThis was caused because of pipeline design incompatible with the muskeg ground conditions, and steps that could have been taken to mitigate the potential for buckling were not addressed.
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, ?8 ~% E0 {7 v, B) kThe spill poured up to five million litres of emulsion - a mixture of water, bitumen and sand - into surrounding muskeg. The spill may have been ongoing for up to two weeks when it was discovered in July 2015 by a contractor walking through the area.
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In August the Alberta Energy Regulator ordered Nexen to shut down 95 pipelines until the company could prove the pipelines could be operated responsibly. The suspension was lifted in September 2015. ; n3 [0 Q6 I% @. [' O- K F
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- with files from Vincent McDermott |
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发表于 2016-7-12 18:01
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