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http://www.fortmcmurraytoday.com ... -and-pipeline-spill
! X8 H: M3 y7 U. i. k- INexen 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.- w8 Q' @; P4 e5 }' s2 B
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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 F& T" r' ]& L2 z: `1 M/ t! K
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The 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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/ U) r6 o/ _+ W5 j$ Q7 lAn 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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- G; A& k& G7 b& M, M& a. 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. 3 K& ` b* X! V+ `/ v9 o# w
# z0 G; L6 d Y3 b. h' e6 Q; }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. ! s+ q3 n8 w: b% j( W1 ~
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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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6 q) `; E9 e( nThe 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."0 S6 B) O2 F2 R! w
$ `4 O5 L w2 Z1 Y) k3 hThis 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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; p$ [# M) I2 s" \, Q! E& d# E& _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.
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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. 8 F @# J5 F8 M! m& a: ~2 \0 H. `) D% s
/ J, ~: X, ^# D/ w$ P6 h; I- with files from Vincent McDermott |
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发表于 2016-7-12 18:01
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