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http://www.fortmcmurraytoday.com ... -and-pipeline-spill$ h6 X/ n' L w x) H
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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2 d" w+ _) v; @. uThe 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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s4 d: N1 y. JThe 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" a" I# H8 k7 u3 F/ s
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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."
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9 A# y+ ?. A' P/ gThe 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. - _0 P, a; y6 J* B4 o$ v! Y
) J4 l6 W( y' b: D0 IThe 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. ( h, e$ s) p! I! h0 F
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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." `) o6 A5 a7 a( r
$ ]! r1 e: A/ B# J% [8 t4 v6 E kNexen 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."6 @+ a( z' o$ C# {8 K0 U
6 A* q P2 O( l5 u- ]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.
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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. ; }! k, s8 K4 q- N1 ^
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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.
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: s6 S+ q8 d9 r& t# _" E- with files from Vincent McDermott |
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发表于 2016-7-12 18:01
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