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http://www.fortmcmurraytoday.com ... -and-pipeline-spill: Y& m: w1 `7 l/ k
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.* ?5 E% _' t7 p- h; H2 n) r P3 m* \
+ X( {" i! _$ q6 u9 lThe 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, 2016.9 o( l5 ^- Y# e4 U0 v
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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.3 k1 y" W& l0 T ~- O0 d
- c/ A: I( j/ @7 @2 t2 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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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.
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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# m5 o6 ]% B ]7 M( \
" g- Z+ J8 c6 b$ ]/ D' D4 [6 QThe 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. @8 u' @. i- T
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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. x: j5 I/ t) c1 S4 R3 M
- }" i' H. Q- w! ~/ c! {% zNexen 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."% I7 E9 I2 u+ T
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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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& h# w. r0 [* a; a- v* LThe 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. / `& y( v: W* s7 @0 i0 S
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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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