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http://www.fortmcmurraytoday.com ... -and-pipeline-spill
$ K! \! ?! Z4 j$ t) X! ^) ~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.) a+ h' p2 F, C9 B! O2 G5 q, i
. N5 i0 `$ M% F# gThe 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.) }' x7 S+ u4 i$ K
3 l" F% C- @" QAn internal investigation found the explosion was a result of work being performed that was "outside of the scope of approved work activities."& l2 n) M. @5 @; G! x1 ?$ `6 R
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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. * x; z1 {- M. q3 Z. 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.
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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. 3 y6 _; @& c' r+ y5 x3 c5 @1 k
0 s8 b1 p1 z/ `$ h' V! b w6 N4 [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.
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; Q% N- n9 L; Z, ENexen 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."- T( a- u5 P+ x
" O. J" v! T' W: Y# a' ^. qThis 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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. w, C& U$ l# V+ aThe 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. 4 }' ^8 Y( p" g
4 N5 u: v9 a, O( j0 L$ n) @/ |- with files from Vincent McDermott |
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发表于 2016-7-12 18:01
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