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http://www.fortmcmurraytoday.com ... -and-pipeline-spill# Z' u) p( B1 G5 N$ r# F" ]
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.+ T) G( y; B9 }0 ~5 N
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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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- K4 |. _7 X/ }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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0 a1 u; m7 B7 D o/ [- [0 CAn internal investigation found the explosion was a result of work being performed that was "outside of the scope of approved work activities."9 w1 O7 I$ j1 m! ]) A( ]) L
" [' a3 W0 [& k v$ T. 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. " h5 U$ Y1 ^, f1 F0 g, A4 t9 m
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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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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. 4 @- B0 y$ |0 c
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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.7 w9 I0 E' a6 W# k( ~* ]# T' b
8 r! x3 ]# X! v& p0 q8 T0 q2 A8 _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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( M! q1 ^8 M, g0 y4 \8 Z5 [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. # I3 h& q0 n. O8 T; a0 O
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The 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. ' N* U) [7 z8 g! }7 O& I) l+ t
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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. ( ]* ?4 @1 g6 q: [4 ~+ ^1 H
- L' u/ F6 g' T; ?) J! z( c- with files from Vincent McDermott |
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发表于 2016-7-12 18:01
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