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http://www.fortmcmurraytoday.com ... -and-pipeline-spill
9 C) @! i$ D& Q% t- b1 c$ b% aNexen 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( L4 V9 [* \& @$ f# @0 `/ D
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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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T/ u2 y" a" Z. UThe 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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* O- r' h) {; O0 s+ ~* [: IAn internal investigation found the explosion was a result of work being performed that was "outside of the scope of approved work activities." W/ X; y) ]) T+ s( i8 I
: y* O, W* _* t6 |' w6 PThe 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. 7 X% V- |2 ?/ K2 k& ]% W
& |3 r e5 S+ r! Q' b. i& `" x" EIn 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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1 A% V6 w, A. V2 T7 [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. , y8 E7 o# E9 [: w$ w7 F I# f3 i
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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. X$ A& W5 [, U9 ?
* E" N7 \# P. @. \5 S: `: Q8 d* HNexen 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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* `* B- R8 ^" S* R1 ~4 F1 |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.
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& C5 X5 |' p; d8 s3 d4 @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. ' f# f s7 [9 p, v) 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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- with files from Vincent McDermott |
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发表于 2016-7-12 18:01
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