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http://www.fortmcmurraytoday.com ... -and-pipeline-spill
8 s9 f+ }* z( r, |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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( K. @/ L! D5 h% G; VThe 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., I) B# V9 p# T) |
1 R7 j5 R2 U0 E5 ?8 |# HThe 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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An 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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4 B( G3 e9 s, `7 dThe 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. % x& s$ ]% f$ u0 g; N Q
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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. 8 F6 X: K! l! D0 v3 Y2 M
8 G$ Q/ B# ?+ N3 t; PThe 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. # B) H1 M; m, J0 z7 ~ Z( l
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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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) ]. f8 `8 N7 b: [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."# X3 x) I; [5 y! _
~* ?& M5 e3 b/ k: o# H: OThis 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. " X O9 P# ]3 M* Q9 S* Q+ Q
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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. + ~) B# y* ^; A0 y. X
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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. : ?' ^. W& y. @* R
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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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