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http://www.fortmcmurraytoday.com ... -and-pipeline-spill
' h6 [. {) l6 [- l+ j# dNexen 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.6 A, t) l8 D0 l9 u7 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." G- s8 v4 w3 X3 q
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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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, f3 Y: | m: {* c5 o5 LAn internal investigation found the explosion was a result of work being performed that was "outside of the scope of approved work activities.". l6 \' c. A' [1 E2 F
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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. ; Y& G3 {) Q! _- [7 v& H
! W. I( _7 |% {6 cIn its announcement Nexen said it is addressing safety gaps in part with refresher training on workplace hazard identification, increased site supervision and safety inspections. ( R5 g; J! }5 H" U1 d+ D
, n3 J5 A8 ~% \, {1 dThe 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., b8 _0 s- z- V7 I
* W0 N0 Y8 S# G b6 c! E. |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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! L4 p' Y8 \" Z* vThis 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. 1 T$ \# i! P4 [# S: X x9 U x
$ Z0 J! [+ X1 W2 \, {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. . z8 ]( f5 I+ ^/ Y2 X$ y0 W- n
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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. + Z' s. w0 E3 o5 T% t5 X( _% v2 A
6 W/ L) y/ u: T# f' }3 g/ U: Y' ~) f/ t- with files from Vincent McDermott |
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发表于 2016-7-12 18:01
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