Accession Number:

ADA101605

Title:

Movement Study of the Trans-Alaska Pipeline at Selected Sites,

Descriptive Note:

Corporate Author:

COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER NH

Personal Author(s):

Report Date:

1981-04-01

Pagination or Media Count:

40.0

Abstract:

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 VSMs, and the changes in relative elevation of the support crossbeams. A maximum lateral and longitudinal motion of the pipe of 13 38 in. and 2 1316 in. respectively were measured up to September 1978. Tilt data for 180 VSMs showed little change over a one-year period, with only 5 VSMs 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

Subject Categories:

  • Civil Engineering

Distribution Statement:

APPROVED FOR PUBLIC RELEASE