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http://www.fortmcmurraytoday.com ... -and-pipeline-spill
5 i8 a6 E) N7 W- g/ ]" G7 uNexen 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.3 n# r7 ~7 B; u
! P: y- Q# f1 t6 S5 E- }" U" | BThe 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.- |- x0 R5 o O1 t7 }
0 ^/ \- a; o' K5 I! Q% ?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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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. # K/ M) S( ~( D+ W
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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. : W6 E0 T) b* @
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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. 5 t0 x6 e* l3 G& X3 I
2 R7 d4 G, {+ n/ g8 | l6 aThe 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.% x5 K8 J' O3 V# B* A
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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 t- L# C7 Q* y1 Z$ z9 r8 p/ A/ ]
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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. p- P" l) K) I) ^& J- Q0 f
5 V; @0 R* Q7 O! GThe 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. : S( J$ h+ [, v9 o3 F
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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. 9 p0 J, V6 ~% m: O/ Z' s$ e
% X1 A2 u4 s+ y# k, U3 U# }7 ]- with files from Vincent McDermott |
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发表于 2016-7-12 18:01
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