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http://www.fortmcmurraytoday.com ... -and-pipeline-spill
" s8 e8 V& D$ ]6 u% X$ BNexen 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. Y+ h# ]) E, I3 w/ Z! @6 z
% @7 z& d9 r+ pThe 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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An internal investigation found the explosion was a result of work being performed that was "outside of the scope of approved work activities."8 Y6 h5 G" s- } }) {, l- Q# Q
- H: u3 h1 n: |6 N5 e" u6 HThe 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. 0 p# ~% M. H* X0 Z- ]0 N
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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. 1 c, r5 Y" e" X4 U/ Q" J1 B
: `# t6 U5 a4 N/ I2 LThe 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" R$ E( k. Q( X' P, {
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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.". e: ?, a+ q: ~, P, b* ?7 K2 a$ |1 n
# G! ~; w7 ^" [( [, }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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1 F. {7 K" C% G: cThe 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.
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t' u8 s1 [ a4 ^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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