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http://www.fortmcmurraytoday.com ... -and-pipeline-spill
- [/ T: J: X5 N+ a F7 ?0 \4 Z% T0 @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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5 v0 O8 `; Q0 L! xThe 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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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.. B8 O& x/ n6 L0 m: d1 p9 _ i; m4 E
# \( x# E4 f8 f" E2 C+ Q$ g) kAn internal investigation found the explosion was a result of work being performed that was "outside of the scope of approved work activities."& U, A B" m# o" J1 J* T
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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.
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% g _- K1 f; }; y6 u) @: 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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. P/ F3 u. [ f1 Q. Y' q4 V/ FThe 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."
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% {3 D4 [+ D0 l3 |+ g5 RThis 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. ' {1 U5 o% E( D& {7 c
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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. ; W" F( D4 H9 m k5 o3 c
; K% \* q R g, K0 Q2 [& u; [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. ! @# C% F8 h z9 H
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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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