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FEASIBILITY STUDY OF REPLACEMENT PROCEDURES AND EARTHQUAKE PERFORMANCE RELATED TO GAS TRANSMISSION PIPELINES
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1994
Year
Unknown Venue
Geotechnical EngineeringEarthquake EngineeringEngineeringGeneral ProcedureInduced SeismicitySeismologySteel PipelinesCivil EngineeringGeological HazardTransmission PipelinesEarthquake HazardsEarthquake ScenarioEngineering GeologySeismic HazardConstruction EngineeringPipeline EngineeringStructural EngineeringPipe Jacking
A general procedure for evaluating the relative risks from earthquake hazards to steel pipelines is developed. The procedure accounts for the influence of traveling ground waves, surface faulting, landslides, and soil liquefaction. The procedure utilizes information, acquired primarily through reconnaissance studies, on regional geology, ground-water conditions, aerial photos, and site-specific soil borings obtained principally through public agencies. Two transmission pipelines in Southern California, Lines 121 and 123, were selected for a feasibility study. Both lines were constructed in 1930, and therefore represent older, more vulnerable portions of the system which are joined with oxy-acetylene welds. A general replacement procedure is recommended.