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Title: Frost heave test being expanded

Abstract

Northwest Alaskan Pipeline Co. is expanding its frost-heave testing program by adding seven test sites along the planned Alaskan gas transmission pipeline route. The test results will demonstrate the behavior of chilled pipe buried in unfrozen soils. To protect the permafrost in which the pipe will be buried, the pipeline operators will chill the gas in the line to below 32/sup 0/F. In thawed soils, however, frost heave may occur when moisture freezes on the chilled pipe, creates a frost bulb, expands the soil, and causes the chilled pipe to heave upward. Two methods being tested for preventing or minimizing frost heave are (1) insulation, and (2) replacement of frost-susceptible unfrozen soil with a selected bedding material. Each test site will consist of two 80-ft sections of 48 in-diam pipe - one bare, the other with insulation (urethane foam) or insulation plus a bedding-material replacement. The sites will have their own power-generation and refrigeration equipment, as well as data-acquisition systems that will automatically collect information from 800 sensors twice a week.

Publication Date:
OSTI Identifier:
5758490
Resource Type:
Journal Article
Journal Name:
Pipeline Gas J.; (United States)
Additional Journal Information:
Journal Volume: 208
Country of Publication:
United States
Language:
English
Subject:
03 NATURAL GAS; NATURAL GAS; TRANSPORT; PIPELINES; OPERATION; DATA ACQUISITION SYSTEMS; FROST; PERMAFROST; SOILS; ENERGY SOURCES; FLUIDS; FOSSIL FUELS; FUEL GAS; FUELS; GAS FUELS; GASES; ICE; 032000* - Natural Gas- Transport, Handling, & Storage

Citation Formats

. Frost heave test being expanded. United States: N. p., 1981. Web.
. Frost heave test being expanded. United States.
. 1981. "Frost heave test being expanded". United States.
@article{osti_5758490,
title = {Frost heave test being expanded},
author = {},
abstractNote = {Northwest Alaskan Pipeline Co. is expanding its frost-heave testing program by adding seven test sites along the planned Alaskan gas transmission pipeline route. The test results will demonstrate the behavior of chilled pipe buried in unfrozen soils. To protect the permafrost in which the pipe will be buried, the pipeline operators will chill the gas in the line to below 32/sup 0/F. In thawed soils, however, frost heave may occur when moisture freezes on the chilled pipe, creates a frost bulb, expands the soil, and causes the chilled pipe to heave upward. Two methods being tested for preventing or minimizing frost heave are (1) insulation, and (2) replacement of frost-susceptible unfrozen soil with a selected bedding material. Each test site will consist of two 80-ft sections of 48 in-diam pipe - one bare, the other with insulation (urethane foam) or insulation plus a bedding-material replacement. The sites will have their own power-generation and refrigeration equipment, as well as data-acquisition systems that will automatically collect information from 800 sensors twice a week.},
doi = {},
url = {https://www.osti.gov/biblio/5758490}, journal = {Pipeline Gas J.; (United States)},
number = ,
volume = 208,
place = {United States},
year = {Sun Mar 01 00:00:00 EST 1981},
month = {Sun Mar 01 00:00:00 EST 1981}
}