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http://www.fortmcmurraytoday.com ... -and-pipeline-spill. C5 H$ v3 O8 U. [* p% {: V
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. R2 F* {+ H. L2 S
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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.: W2 ]7 e: `) [# t- w" [' m
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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.
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8 D. k; y5 R1 R4 @* x- b1 EAn internal investigation found the explosion was a result of work being performed that was "outside of the scope of approved work activities."
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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. ( ?& i. m$ D3 d {% `
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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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& {. A7 J5 b& B u* eThe 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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5 V$ v! J5 g. d* O; B2 k. pThe 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.! i0 i1 K+ q c. k$ ]9 i3 U
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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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# n0 d/ z$ q. G, d+ H9 cThis 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. $ V3 |2 t: L2 u; \/ e% d
4 d( l8 \& W1 o* }( f8 B# W/ `4 F& ^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. : E- D4 D: g( P+ F( N
" P; B! V9 H0 ?1 [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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s1 B) `0 {7 n \7 X x" w- with files from Vincent McDermott |
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发表于 2016-7-12 18:01
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