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http://www.fortmcmurraytoday.com ... -and-pipeline-spill, Y; V, f. x. F% e# u4 Z2 a1 G9 s
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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( N: g0 W5 w& xThe 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.
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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.# S! h. L1 j/ ?: ?) S4 M4 Y
8 |+ v4 U2 c6 FAn internal investigation found the explosion was a result of work being performed that was "outside of the scope of approved work activities."$ u1 A7 t+ f1 b, m- b" I5 q
7 u2 b! n' {" `6 eThe 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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2 N+ D# X8 B3 @& a# GIn its announcement Nexen said it is addressing safety gaps in part with refresher training on workplace hazard identification, increased site supervision and safety inspections. & L _% [* B" r- o2 m
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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. ' x2 |& E7 |( G* a( }2 E; L# r( }( f
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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.
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3 ~7 D! Z7 H1 d5 G- \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."6 k/ T$ y$ t; x; u4 R
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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.
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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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1 D. Y/ T) p% N- with files from Vincent McDermott |
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发表于 2016-7-12 18:01
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