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http://www.fortmcmurraytoday.com ... -and-pipeline-spill
5 t# s9 V, w- }3 BNexen 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.- t1 ]7 X$ [9 c% I7 }5 n1 b, Z
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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., `$ q$ N# a7 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.", D, ]' X/ Q6 c, c
% f. t$ X) G! }! p9 E. C9 c5 ]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. 6 C* w+ [ i1 |- \/ U. r" z
L7 t) L+ S5 z4 ^. RIn its announcement Nexen said it is addressing safety gaps in part with refresher training on workplace hazard identification, increased site supervision and safety inspections. . h) l* s3 ^$ j' H5 N5 t, Z
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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. 4 f/ O: M$ f+ Q8 Y: u
, l1 m4 U( M6 I3 K$ c D4 X: a/ \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.
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1 D) G3 [4 M4 q( U5 LNexen 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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9 A7 v! z8 n j) a% SThis 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.
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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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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. # g/ V! }' R: G1 H7 w$ f
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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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