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http://www.fortmcmurraytoday.com ... -and-pipeline-spill
! w; T4 k9 Q: [3 v! s! eNexen 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.4 O' P* C5 S4 i) c. Y7 W: [
1 i0 _; ~& r8 P9 W$ {7 C' rThe 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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4 [3 C) D8 J" B6 a6 @% `& aThe 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./ D* r8 _% E0 p% ]+ x) T# H7 d% K. i
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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."( G7 b p$ ?" Z( w: X- O/ @
7 b5 O7 l3 f. Q7 CThe 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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The 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. L$ F9 s* {3 d
0 b y; S9 B+ A S9 m- ^$ j' oThe 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.7 j+ t) d Q" }$ U9 G( D
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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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1 f2 F$ X2 l( n: ]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. % d. d* r7 m( z
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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. ! R7 D* q# d% Z6 z/ d" I0 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. . m$ Y! B( m6 t# S; L9 Z4 S
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- with files from Vincent McDermott |
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发表于 2016-7-12 18:01
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