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http://www.fortmcmurraytoday.com ... -and-pipeline-spill
& a. d& {& S/ H" J, \9 C- W3 rNexen 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." q3 Y0 g$ v, u2 M! ?0 ?' l A
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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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( f! ?$ Z0 `* U( ?$ Y' q. p4 H% v+ jAn 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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. m: x- d$ ^4 CThe 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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5 w6 W7 Q7 _! a( G LIn its announcement Nexen said it is addressing safety gaps in part with refresher training on workplace hazard identification, increased site supervision and safety inspections. 2 f3 V/ J# O( L# }) I" [
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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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" G$ B* ?3 i, V* ^. c9 g, p+ AThe 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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- v! R h" q4 t7 YNexen 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."# G7 w% n) k. }' q1 o' U
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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. ' ?8 }9 f7 n: ]5 V6 L) U; m+ r
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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. ' m% [' }) ~( n+ x6 `/ u
1 P3 z2 V) M( B; u# d- Y' A- with files from Vincent McDermott |
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发表于 2016-7-12 18:01
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