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http://www.fortmcmurraytoday.com ... -and-pipeline-spill
1 l; ?* P2 [* o, i6 n: o6 ENexen 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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& }: ]$ [, {2 R! O( D, x7 ^! d! {9 e+ GThe 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.; e5 E. z7 Y* r: O: K7 ~( u( r
( p( ~9 W# W6 a* @9 A1 y# qThe 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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5 H# P0 ^, ], `0 _ k6 b% E- f' hAn internal investigation found the explosion was a result of work being performed that was "outside of the scope of approved work activities."- D9 Q9 `( y7 U9 Y- @
& l% P+ L$ t0 T2 N5 \8 GThe 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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, c5 X1 i) Z4 @( rIn 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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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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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."7 P, X2 D& M }# f2 V0 A# ~' ]
; S# P& |6 L4 @6 U5 cThis 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. * a }8 l5 ]" E8 D" q% R m5 r/ w2 e
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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. 1 F" ^, r+ |! G" W
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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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- with files from Vincent McDermott |
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发表于 2016-7-12 18:01
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