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http://www.fortmcmurraytoday.com ... -and-pipeline-spill
5 t I* _% X/ e% i# c5 J$ @/ J. ]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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) g) E% S1 e$ m$ K; M; EThe 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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. n- y8 A8 @2 t6 uThe 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.") p. Z* f, p" u* B+ e
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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. : [, M2 w% `+ n5 i, y. w$ {7 W
. h- Q; U9 ]5 k/ Z# d( r2 `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.
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( ^0 P; w! y0 U4 wThe 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. & o* L0 J9 S. c- c+ s7 q( o
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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.% C U G# o5 M0 }9 N/ G, H: t8 G! C
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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."
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$ }$ p7 F \( A# e* M1 S1 x0 qThis 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. , Y F( [# } Q; ?! y B3 w* 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. + h; x' F$ q$ \8 H. u9 L
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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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