 |
 |
|
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
|
|
|
|
|
|
News Bulletin 1366
Mile Post 588 - Earthquake Damage
Assessment Update 2
ANCHORAGE, AK – November 4, 2002 9:00 AM
- The pipeline is shut down and no leaks have been detected at
this time.
- The Incident Commander initiated a Joint Information Center
at 7:21 AM.
- Crews are on site and are applying temporary supports for
above-ground pipe in the MP 588 and MP 589 areas.
- Engineering assessments of the pipeline, pipeline bridges,
and other supporting structures are underway.
- At approximately 1:12 PM (AKST) on Sunday, November 3, 2002
an earthquake registering at a magnitude of 7.9 occurred
approximately 45 miles E/NE of Cantwell.
- The pipeline’s Earthquake Monitoring System responded to
the quake and immediately began an auto shutdown of the
pipeline.
- Before the auto shutdown was complete, Alyeska personnel
initiated a controlled shutdown of the pipeline beginning at
approximately 1:50 PM.
- Helicopter crews immediately began aerial surveillance and
ground crews were mobilized to begin inspection of the
pipeline. Although there is no apparent damage to the
integrity of the line, pipeline support structures near MP 588
were displaced during the quake.
- The portions of the Vertical Support Members displaced
during the quake were the "shoes" which allow the
pipeline to slide along the crossbeams in between the vertical
supports.
- At eight locations, there are "shoes" on the
ground and at five locations there are crossbeams on the
ground. The shoes and crossbeams are part of the support
assembly for above-ground pipe.
- It has not been determined how long the pipeline will be
shutdown but a more accurate estimate will be released after a
comprehensive review of the affected area.
- The earthquake was:
--45 miles E/NE of Cantwell
--50 miles E/SE of Healy
--66 miles W/SW of Delta Junction
--92 miles S of Fairbanks
Most Recent Developments in Bold Lettering
|
Back to top
|
|