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http://www.fortmcmurraytoday.com ... -and-pipeline-spill8 W4 X6 A5 t6 p |# x# Z
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." n! e& p7 q: L4 G9 n- b4 |
- F2 `4 j A: y* AThe 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., q: n, ~# [* h
, o( g% r. o, ~- s. G, ?3 K0 [ xThe 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.# V: V4 j" f& P1 X
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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."
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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. 9 s( T, R+ F$ ^' q7 q' \" \, H
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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. 0 D& V: E m6 }# r4 x( S1 f9 x
2 R6 ]9 g! P' x; VThe 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.5 m9 r6 O) l+ k* }7 ~. u- G8 J
9 I9 L8 e" w" S$ ]5 L% ]2 PNexen 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."8 i; e' R+ G0 ]( z$ A D8 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. % }2 t+ S, B$ c) E$ D
; d3 z8 v& C AThe 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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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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V. L8 T9 L0 x; j- with files from Vincent McDermott |
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发表于 2016-7-12 18:01
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