Movement Study of the Trans-Alaska Pipeline at Selected Sites

Eight sites along the trans-Alaska pipeline from the Denali Fault to Fairbanks were selected for pipeline and pipeline support movement studies. Four measurement surveys were conducted, starting before oil pumping operations began up to September 1978, to determine the lateral and longitudinal pipe...

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Bibliographic Details
Main Authors: Ueda,H T, Garfield,D E, Haynes,F D
Other Authors: COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER NH
Format: Text
Language:English
Published: 1981
Subjects:
Civil Engineering
*PIPELINES
MEASUREMENT
STABILITY
MOTION
LONG RANGE(TIME)
VARIATIONS
THERMAL EXPANSION
TABLES(DATA)
SUPPORTS
ELEVATION
TILT
STRUCTURAL COMPONENTS
CRUDE OIL
*Transalaska oil pipeline
Fairbanks
Tilting
TransAlaska
Alaska
Online Access:http://www.dtic.mil/docs/citations/ADA101605
http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA101605
Description
Summary:Eight sites along the trans-Alaska pipeline from the Denali Fault to Fairbanks were selected for pipeline and pipeline support movement studies. Four measurement surveys were conducted, starting before oil pumping operations began up to September 1978, to determine the lateral and longitudinal pipe movement due to the thermal expansion of elevated sections of the pipeline, the tilt of the vertical support members (VSM's), and the changes in relative elevation of the support crossbeams. A maximum lateral and longitudinal motion of the pipe of 13 3/8 in. and 2 13/16 in. respectively were measured up to September 1978. Tilt data for 180 VSM's showed little change over a one-year period, with only 5 VSM's tilting more than 0.5 deg. Relative elevation measurements showed insignificant changes for two sites compared over a one-year period. Comparisons of our data with as-built elevations at 8 sites show a few large differences that cannot be readily explained. In general the pipeline and its supports, at least at the sites studied, show minimal movement and activity. (Author)

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