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http://www.fortmcmurraytoday.com ... -and-pipeline-spill8 e1 i4 H- D. M3 G0 D
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.
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- l# i- E" V( T. x8 AThe 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, 2016.2 X4 o; R& U6 V. ], O
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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.
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( [, E3 k: r! R2 W+ m: D! QAn internal investigation found the explosion was a result of work being performed that was "outside of the scope of approved work activities."6 m! d9 a1 H% ^( z4 F2 k% C* i
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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. 2 v0 s( j6 x+ p" a
3 \; g- S. p; k. T* L; A- J( T% lIn its announcement Nexen said it is addressing safety gaps in part with refresher training on workplace hazard identification, increased site supervision and safety inspections. / c( O$ ~* V8 `* a0 Y% t0 m
$ J, o8 b# d, A4 q& I: d TThe 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. , C- E& W& G5 n8 O1 M; H
7 }' d% R9 ]* e! L- G1 _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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: D6 J* G7 n3 P1 ?/ L: k* f! v- Q9 I! ?2 FNexen 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."
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- Y8 {/ {4 z0 t( 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. ; P' r x/ l' w
' P9 y( ]/ m8 Z' \# 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. # H; d$ ]6 Z3 s$ l+ n" b/ \: g
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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. ' ^$ g5 y9 x. X" q- O0 ~
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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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