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http://www.fortmcmurraytoday.com ... -and-pipeline-spill
4 k H5 B t0 x3 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.8 @: K5 Z C F6 e" M- \# s0 ~5 \ ~- ]
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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, 2016.9 J8 |1 k& R, l7 S. _7 s+ m
1 l+ ?/ d% E/ b. K4 \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.5 r. o9 y+ S7 u$ h* L" z0 _
/ a5 O1 \& w: N1 U" gAn internal investigation found the explosion was a result of work being performed that was "outside of the scope of approved work activities.", f, M. G) W( L( 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.
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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. # L, Z. u7 S6 q. w2 P2 G7 z; [
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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. , p; q) k: ^* w$ h N
8 g- r* Z9 C) z( A- i* w. uThe 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.! z, \! x. I, Q2 D0 D* a* {) @
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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."
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8 |. l5 F2 ^) x# X- l+ yThis 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. & ]* k( z% |/ }
; K. H) L, U* ]1 X! B* J8 mThe 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. " c$ _( e4 M( E; x( ]
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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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: K+ {% A7 z+ i$ w g4 N4 n% r- with files from Vincent McDermott |
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发表于 2016-7-12 18:01
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