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http://www.fortmcmurraytoday.com ... -and-pipeline-spill
% M9 R% q8 x9 Q" I1 }6 V+ q# @7 G' _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.: T) j# Q; q" y! i: L0 b2 _! E+ t8 @
$ `2 R! z7 `+ q' n+ H1 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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, {$ v |. D, ]- H+ r3 ~! j( 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.# D/ b6 K, C8 M/ A5 m+ 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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z( h: `+ G- w$ R7 a, X) _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. . @ A- P' W1 g
E* v$ C- w3 W% NIn its announcement Nexen said it is addressing safety gaps in part with refresher training on workplace hazard identification, increased site supervision and safety inspections. 7 i. h4 D1 J# v$ O6 t8 `
( L- k! @+ r' o/ k9 K: v2 jThe 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. & J4 ^4 J6 I. y! ?6 [
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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.- P% L2 j; X( B; |" h& D& L0 [1 _: \# o' I
; x4 u' l1 r* E0 K2 QNexen 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.", ^# P% ~9 q+ A; 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. $ S# K0 F* k# i0 l2 i
. l: R7 S \7 C0 G6 |- iThe 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.
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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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