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http://www.fortmcmurraytoday.com ... -and-pipeline-spill
; y7 y, p( G# h' qNexen 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.8 D, M* @- B# ?# B
7 ^9 Q' \4 }$ W+ h5 e/ D- I9 PThe 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.7 j+ d7 ]" E( M
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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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8 l; k( i% T; M& g4 E" K' m: J) ~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. 9 s. x( d1 R5 {; R
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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. 2 C. z( x. x& |& D5 |( X
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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. / j& q) A' B4 E! i
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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.3 J* }5 Q9 [$ P4 p
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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."/ g/ q# D: Y3 |" i* A
3 @1 z+ }$ t5 @* lThis 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. 2 q& d8 x, o7 l
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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. , i8 D8 S2 {. Y1 k# j2 M
$ \4 x: C2 C8 W/ [- with files from Vincent McDermott |
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发表于 2016-7-12 18:01
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