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http://www.fortmcmurraytoday.com ... -and-pipeline-spill8 m8 P6 C3 ~* R# |* j( o0 r2 V
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.: g# s8 L9 c# K Q$ Z7 l
" Y1 K' h: Q' e. Q7 W, 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.$ q: H$ v% X, R! ^2 a
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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.+ ~+ A# g4 q1 w% B
g# ?1 o1 w9 a# r0 M0 _An internal investigation found the explosion was a result of work being performed that was "outside of the scope of approved work activities.": y$ \6 v9 S) ]
5 v$ c' w7 l; o# W. u, [: x, C! \3 mThe 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. : f+ e8 }' V2 w* I
& z! a/ }3 Z# e# x' F& _1 M; ^1 i3 J" \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. " J3 w$ m. R5 q! ]7 f0 M
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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.
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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./ u, g- W9 X1 T" f( t5 U
! e2 o! T: b+ u l" U2 O, @$ M+ pNexen 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."( I& s/ d a, C- m
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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.
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( W$ k9 @; E' C: m" Z6 F8 [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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; ^6 `6 d4 h- P2 x9 a% @$ I' }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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- with files from Vincent McDermott |
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发表于 2016-7-12 18:01
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