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- W2465460257 abstract "Design criteria and equations for determining the line pipe wall thickness has been, in the past several years, one of the most important issues with oil and gas transportation companies. Published results of the experimental and analytical studies and safety records of the pipeline operating companies indicate that the present traditional design formulation is conservative and may be revised to reduce pipeline wall thickness safely. The SUPERB Project was initiated in 1991 and supported by ten major oil and gas companies. A recently published guideline contains some recommended design equations for wall thickness determination with a new value of safety (usage) factor using structural reliability and based on calibration methodology. The goal of Gulf Interstate Engineering`s (GIE) study is to develop an accurate, sound analytical solution for determination of the hoop stress due to internal pressure, considering distribution of the radial stresses across the wall and nonlinear property of pipe material. For design purposes the authors used an elastic, linearly hardening stress-strain diagram, which for this case, was more conservative than an actual stress-strain diagram. This paper compares reduction of nominal wall thickness using GIE and SUPERB methods to ASME codes for the pipe with the various diameter-to-wall thickness ratiosmore » and underthickness tolerances. The comparison shows that results obtained with two different methods are in good coincidence. Therefore, traditional stress analyses based on performing more accurate calculation considering stress distribution across the wall, nonlinear property of steel, principal, methodology and existing codes design factors may safely reduce the required pipe wall thickness and may be used in the engineering design.« less" @default.
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- W2465460257 date "1997-05-01" @default.
- W2465460257 modified "2023-09-26" @default.
- W2465460257 title "Pipeline wall thickness/design pressure formulation GIE study, SUPERB Project and ASME codes comparison" @default.
- W2465460257 hasPublicationYear "1997" @default.
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