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http://www.fortmcmurraytoday.com ... -and-pipeline-spill' t7 c$ r4 H6 b8 I- J
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.3 A% u( @9 r: v9 V% b1 j# ^ N3 ^; t
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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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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.1 J# b i- G8 O |
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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.": ]5 ]) ?+ X3 G: J: J$ S2 V9 C `
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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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* ?* c! R! r3 K6 Z# s* \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. ( W% f1 w! c; ]6 B( S f9 L: H( K
( S* E. y1 o/ pThe 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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& s3 Q1 f- E. k3 A' 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.1 A2 O5 s* D) A9 {# H
5 b; R7 J4 o4 D; 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."1 N% W% F6 Y7 Z0 }3 P" {
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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. % [( A0 o' l& M$ R8 k
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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.
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: J7 _2 G9 {1 `9 y* y: \9 t& |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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) b2 S& s7 E& X% o) J) c6 @7 b- with files from Vincent McDermott |
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发表于 2016-7-12 18:01
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