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http://www.fortmcmurraytoday.com ... -and-pipeline-spill3 [/ ]- T8 _/ l
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.
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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.: Y# y5 k1 q- }
* F/ r B5 o% r* j' fThe 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. p! C3 f- @) ~+ ^& ?2 t5 W0 B4 R
5 p m: R. X% D4 GAn internal investigation found the explosion was a result of work being performed that was "outside of the scope of approved work activities."# D) [, U+ `1 A0 ]! b( W$ X) m
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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. - G/ d; _' p8 I. [. V3 c) x
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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. $ [" x9 i6 X$ m8 Y" t3 a
, u0 w) S7 \" Z2 v |$ I$ 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.
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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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$ {' \; z/ y: W! l2 |' j- s2 oThis 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. 2 P- W6 k+ x& M2 P* R/ X9 f
9 o3 q& D. P( K4 b1 uThe 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. 1 W9 Q7 R, r. j: ]1 p
+ V2 V' Y5 H# {7 ^: `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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