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http://www.fortmcmurraytoday.com ... -and-pipeline-spill
5 k) k8 Z" b! t* ^$ M1 N! NNexen 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.7 N+ A% ^2 m1 v- g
# C& ]8 V* w4 V3 f" t( l9 d" SThe 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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2 _/ ?. O" m' G: n4 s2 P1 ~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.; W+ I5 N; l3 Z) y
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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."8 ^! h6 t- t' a6 e+ z: 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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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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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. 4 N% y# z" `8 o! m
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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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* O1 v; P- d7 J: sNexen 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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" l, } F+ W! _4 \/ b" UThis 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.
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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. 3 J" e( s; W# v; O8 g3 ^6 J
* s( |6 l/ l+ O8 Y( s1 C5 P- with files from Vincent McDermott |
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发表于 2016-7-12 18:01
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