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http://www.fortmcmurraytoday.com ... -and-pipeline-spill# _( s3 `# |1 |+ c+ n
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.0 e" ?& H8 m8 s4 F d* |- @- R9 ~
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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, 2016.6 [2 M% z/ G" |( c7 Z! J% G6 J- l c
( D0 z6 a/ @6 R; x# p) _% ` C" PThe 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./ V! m9 D. Z8 P8 P
* y& M% Q% l, M# cAn internal investigation found the explosion was a result of work being performed that was "outside of the scope of approved work activities."
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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.
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! e% J; R# \+ I2 @: t" QIn 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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9 b4 k& G2 n2 B3 ZThe 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. % p3 C& c: v: Z7 [& J4 }2 |% B+ P! a
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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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7 _0 `; W5 F% J' _9 }4 O/ gNexen 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."
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/ F& \& |7 S, H$ A: g% T/ ZThis 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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" H2 }4 e$ b8 A# n( ?) R$ b& oThe 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. & }: X2 o$ @" a* K
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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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