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http://www.fortmcmurraytoday.com ... -and-pipeline-spill0 T, f, l3 {4 ^# x( `
Nexen 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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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.. l; U1 e8 L# X) b `! v
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The 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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+ g( c. h1 k; BAn internal investigation found the explosion was a result of work being performed that was "outside of the scope of approved work activities."! w( ~. {! L0 H- G, r$ ]/ x" d/ y% _
7 _9 l5 e) B# V1 M: {# S. h3 @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.
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4 F, Q4 c7 v' q7 \: vIn 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. 5 s+ v$ f( e e) l' ~5 A" h
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The 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.- h9 G) P) f1 G5 K- |; v! o
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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."+ @$ T# ]+ `5 P2 @0 k
1 I& s; [9 x8 }This 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. 3 x# I( z7 {$ z) F# |
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The 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.
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3 t1 p2 n" _0 y7 z7 Z- with files from Vincent McDermott |
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发表于 2016-7-12 18:01
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