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http://www.fortmcmurraytoday.com ... -and-pipeline-spill
3 q4 m& s1 f7 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.
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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.; z9 q" F4 u1 [0 k& i2 _: H
% w& Q2 H+ }; o; AThe 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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# ?7 o, \2 y% MAn internal investigation found the explosion was a result of work being performed that was "outside of the scope of approved work activities."4 d( h7 \' m, D( n+ J6 k, Y/ Q
$ v6 E8 }( ^8 o! |7 k0 oThe 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. - K& `/ j& a# H/ f# l
+ v4 \" H ?. j% D1 `. h( V9 ^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. : r) h! G+ }' ^ n% ]" d7 _1 p
8 {/ Z/ i- M' @* d+ L! r& OThe 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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. L) |7 ?0 ]: g1 J/ M, n6 sThe 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.: }* R8 B5 a$ }9 m# \) T. }; d
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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."6 g) E8 ^$ H. H. A! {2 [
) d* B8 u9 u* BThis 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. - N8 z1 O/ d) c+ {( b
& I- Y9 v+ d' j2 c4 s) kThe 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. ; C; w3 t" J5 q6 l5 {8 U" H
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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 W$ G: g# ?# ]* d( h( x
. j3 Q* V, V# ~) u; {9 ?- with files from Vincent McDermott |
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发表于 2016-7-12 18:01
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