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http://www.fortmcmurraytoday.com ... -and-pipeline-spill
& }. M7 m6 f u2 ?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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. Y; q9 b0 E2 vThe 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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+ s& H, T' _( J, ?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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1 _$ h9 M1 D) y2 W, ]An internal investigation found the explosion was a result of work being performed that was "outside of the scope of approved work activities." P2 d9 ^" t5 L' o3 d* L. f
6 @ F3 W, E$ D7 y( a- FThe 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.
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* a. @4 ]# @7 u& yThe 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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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.( Z# F6 R9 r2 J$ x
: o* V$ \: M9 t& v; h4 B1 gNexen 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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' |1 P4 m) G$ A) w }0 TThis 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. : F7 a+ n, n' [ N6 ]
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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. % O' m- E8 p' Z! R
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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. ( i0 L. Q3 ?$ l5 y3 J6 Q
$ p+ a3 A% s; W( g4 I: x: z- with files from Vincent McDermott |
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发表于 2016-7-12 18:01
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