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http://www.fortmcmurraytoday.com ... -and-pipeline-spill9 h" V3 E$ K% i1 V$ _5 s6 m
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, 2016.4 Z0 v3 O+ @2 [' z2 g, K
3 D/ [, ^$ O% h4 v# z* nThe 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.3 ?; ^& Z% _& o: u
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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."; O( n9 S' o* ?/ t3 x4 m
. r' T# B* y" o0 V6 x& yThe 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. 1 ~# F' h s# h1 u
q1 i9 P- R' {2 g; j, d4 ]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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+ `) f( A" W. q$ @* XThe 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. C6 I/ F# K. r/ v1 t; n/ j- e% a
# s4 U) w! D/ w6 Z, j, R0 \4 sThe 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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; i; A$ G9 j" w DNexen 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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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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! m8 W2 m: q" f3 NThe 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. ; S G/ a5 Z4 `8 N: k: K& o, u
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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 D" [+ e( F, m
# e: G7 V& k3 x l2 Y/ X# ? h- with files from Vincent McDermott |
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发表于 2016-7-12 18:01
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