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http://www.fortmcmurraytoday.com ... -and-pipeline-spill- \ I) V1 t" C$ j- b9 i3 ~ e7 u2 R
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.# u0 V% v' l! {2 {$ {; B7 o
' K7 B! s# g3 t: {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.. U' @3 j4 @& e) g
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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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# m7 }5 ^- p$ P& w4 GThe 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. 0 `! i9 I) Q! h2 V
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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.
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' V; L& a' r" h$ s, S. O0 N) g1 UThe 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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7 T% |% y/ k# Y* F qThe 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% `0 a0 @: K% w6 y( H
1 ^3 I. H9 l; `/ Q) JNexen 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 g" ?4 f; i4 e3 @5 I/ @
1 H- S& z! Z1 ^# W' e/ L) V. U* \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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0 r" F' A. M8 c7 z* [: F7 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. : ?$ H. ]/ A: F9 I
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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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6 F4 e" F7 ]# {8 U$ k, p- with files from Vincent McDermott |
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发表于 2016-7-12 18:01
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