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http://www.fortmcmurraytoday.com ... -and-pipeline-spill& z% t: n0 S4 R6 x+ X" x" n
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.' L+ m& v K+ f5 M
1 _* B4 e+ @7 p% K. q. O1 Z7 M! L! JThe 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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5 C' q' G7 O( w+ @An 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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3 M5 D* e0 G. q/ z+ O P5 ?% k. kIn its announcement Nexen said it is addressing safety gaps in part with refresher training on workplace hazard identification, increased site supervision and safety inspections. ) S3 j2 Z0 h( A3 T$ O* w
* p! _# ?! p/ u6 k+ e' UThe 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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- y4 J( r" z* Y* gThe 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.
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; R8 Z' I5 H" B, m1 iNexen 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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& { a! c$ J; ~8 D7 q; B0 ]5 AThis 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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y- ~5 w3 r4 z8 _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. ! q9 d6 [4 t1 O6 n6 @
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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. 9 B( P" U+ U+ O- L3 `; m
1 F- [! s% s1 i) {1 F9 W' J- with files from Vincent McDermott |
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发表于 2016-7-12 18:01
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