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http://www.fortmcmurraytoday.com ... -and-pipeline-spill
" F( L+ B1 Y4 q0 j. b: n6 @% JNexen 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.
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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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. c( S7 v7 C EThe 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.' r% d; g5 t1 w8 }+ F' k7 z& e6 K9 B
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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.". Z, L! f" I" ~5 m: h4 g0 w
% [' z; }2 O, B( AThe 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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! B+ J. P% z9 W: gIn its announcement Nexen said it is addressing safety gaps in part with refresher training on workplace hazard identification, increased site supervision and safety inspections. 9 s$ E: ^& t/ ?! X9 }
' m3 H, }. b- n$ y' Z9 _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.
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b' F6 D: ~$ m( M1 [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.' ?4 ]" i) N8 J' m+ O
& _6 Q) h3 Y2 H" P9 t4 ]6 O1 BNexen 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."9 Z, R5 e9 v. O
6 D5 A' Y5 S* D4 F" NThis 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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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.
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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. # H0 I9 w& `- O
! x4 @6 p, }7 b# y. A% E0 @- with files from Vincent McDermott |
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发表于 2016-7-12 18:01
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