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Technical Reference for Improved Design and Con...

SKU: GRI-99/0192
Technical Reference for Improved Design and Construction Practices to Account for Thermal Loads in Plastic Gas Pipelines

Methods are outlined to design and install PE gas pipelines that accurately incorporate the effects of temperature variation, tie-ins, and other important material variables, service conditions, and field parameters. The report provides useful and critically needed data and information for gas utility engineers, researchers, consultants, and regulators.
Document Type
Report
Report Type
Final report
Report Period
06/95 - 12/98
Corporate Source
Cornell University, School of Civil and Environmental Engineering, Ithaca, NY
Sponsor
Gas Research Institute, Chicago, IL; Brooklyn Union Gas Company; Consolidated Edison Company of New York
Pagination
248p
Product Media
PDF Download
$295.00 / Each
 
Availability: In Stock
Summary:
The objective of this project was to aid gas companies in reducing costs through the development of technical data and information that would lead to cost-effective, improved design and construction practices that accurately account for the effects of thermal loads developed in polyethylene (PE) gas pipelines. The research work included conducting field and laboratory tests, extensive model formulations, and thorough analytical evaluation and validations to determine the effects of the field thermal loads developed in PE pipes on the steel and cast iron pipes to which they may be tied-in. Results show that for the worst case considered the developed PE thermal loads were only about 30 percent of the stress computed using an instantaneous temperature change of 100 degrees F (55 degrees C), and could be only about 15 percent if the PE pipe is allowed to reach an equilibrium temperature with the ground before tie-in or is allowed to cool before the excavations are backfilled. Methods are outlined to design and install PE gas pipelines that accurately incorporate the effects of temperature variation, tie-ins, and other important material variables, service conditions, and field parameters. The report provides useful and critically needed data and information for gas utility engineers, researchers, consultants, and regulators.
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