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http://www.fortmcmurraytoday.com ... -and-pipeline-spill
# n ^+ _9 a5 T7 MNexen 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.
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! ?4 B* O4 `) R& n; w6 l2 VThe 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.5 o9 d- U6 J4 L" {; ]9 ~
$ ^/ g! k* T& O& R% [An internal investigation found the explosion was a result of work being performed that was "outside of the scope of approved work activities."( E0 J& x( c) e" d& j3 L
' u$ Z5 n6 V" ]( W9 S& HThe 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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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. % c7 B- h' u( g8 l4 Q/ h' L
i- H' ^# \5 h6 AThe 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.7 D1 J& J/ Z9 l ]6 H
1 W3 x% v; B8 L+ HNexen 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."* B5 \/ Y+ ^) J5 K W7 d
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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. ' l* e) S$ a2 j9 y1 E6 }
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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. / J7 k- I; C& } 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.
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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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