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http://www.fortmcmurraytoday.com ... -and-pipeline-spill
+ m" S9 a" A3 f' t8 vNexen 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.2 t, g- k* J5 m5 P" e2 a
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The 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.
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5 y6 g2 n3 A! \7 n k$ ZAn 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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9 Z1 R' n1 r K7 PThe 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. 1 h& v8 m* _& y& n6 Y2 t
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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. : n }! N, k9 q* q: C$ p' M. z: H
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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.8 h2 A1 o# m* u- M3 x6 _
3 R, e6 ~, ~7 LNexen 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." k, t7 X& A, z/ Y: c
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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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9 j% n# ]5 H0 G" R: pThe 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. / ~- B& I. @/ ?4 e1 O* g
3 j/ m) q' x. k+ K, e7 Z4 ~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. ) N6 `& \% k& @4 w# h2 P
& G( B8 o' G; w% k- with files from Vincent McDermott |
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发表于 2016-7-12 18:01
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