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http://www.fortmcmurraytoday.com ... -and-pipeline-spill
3 I2 B" [- K$ E/ W4 P2 b SNexen 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.' G# i5 a) C" q; Q
) Z* f0 Q4 G% X+ G( QThe 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.8 o! k" m0 I& x
{9 R$ u2 j) W* N- N; U. [An internal investigation found the explosion was a result of work being performed that was "outside of the scope of approved work activities."/ D" m& ]- G5 w. D# ~: P' i3 q& [
! G* T! U+ l @% bThe 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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' S' h$ D! h. l* bIn 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. 2 N0 b; ~; y7 ~
+ b9 e$ k6 \8 [: IThe 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.* \! F7 I2 P& s
5 A% E2 Y: O" _# {! ?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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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. 1 z7 {( \0 J. ~2 Y4 W8 O3 R+ Y6 t/ H: y
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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. . P {- Q! ?* W9 @2 e7 e6 \$ {
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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. ; f2 Q5 z) p# Y/ c
* d m& h1 `4 K: z2 N( I4 d- with files from Vincent McDermott |
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发表于 2016-7-12 18:01
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