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Keywords: wall thickness
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Proceedings Papers

Paper presented at the The 32nd International Ocean and Polar Engineering Conference, June 5–10, 2022
Paper Number: ISOPE-I-22-130
... to the Turkish gas-transportation network via the Black Sea, as shown in Fig. 1. The system currently has an annual capacity to transport 31.5 bcm of natural gas over approximately 940 km. The line pipe is longitudinally welded with a nominal outer diameter ( D ) of 813.0 mm (i.e., 32 inches) and wall thickness...
Proceedings Papers

Paper presented at the The 32nd International Ocean and Polar Engineering Conference, June 5–10, 2022
Paper Number: ISOPE-I-22-147
... a very thick wall to cope with such, hostile environment. This means that D / t , the diameter-to-wall-thickness ratio, must be low. The analytical limit-state equations included in DNV-ST-F101, a prevailing design standard for submarine pipeline systems, do not work well for pipe with extremely thick...
Proceedings Papers

Paper presented at the The 32nd International Ocean and Polar Engineering Conference, June 5–10, 2022
Paper Number: ISOPE-I-22-167
... results using the criteria in DNVGL-ST-F101 2017. The propagation buckling criteria is limited to pipeline within 15<D/t<45 in DNVGL-ST-F101 2017, the criteria in this code can be used in the design of high-pressure and large wall thickness pipeline within D/t≤15 and checked by finite element method...
Proceedings Papers

Paper presented at the The 30th International Ocean and Polar Engineering Conference, October 11–16, 2020
Paper Number: ISOPE-I-20-1242
... conical structure cold region maximum stress narrow conical structure sea ice upstream oil & gas platform resource development pile leg jacket structure displacement wall thickness ice condition requirement ice-resist performance ice force peak ice force jacket platform...
Proceedings Papers

Paper presented at the The 30th International Ocean and Polar Engineering Conference, October 11–16, 2020
Paper Number: ISOPE-I-20-2145
... verification, linepipe material selection, manufacturing quality control, advanced construction quality surveillance and "dry" pre-commissioning of the installed pipeline. midstream oil & gas wall thickness operation pipeline design excursion application hydrotest waiver offshore pipeline...
Proceedings Papers

Paper presented at the The 29th International Ocean and Polar Engineering Conference, June 16–21, 2019
Paper Number: ISOPE-I-19-292
... of the pipe. The residual stress was then measured during the manufacture of the flaw and was compared with the FE prediction. Ultrasonic measurements were then carried out on the outer surface of the pipe to provide the residual stress and the wall thickness. This ultrasonic sensor can therefore monitor...
Proceedings Papers

Paper presented at the The 29th International Ocean and Polar Engineering Conference, June 16–21, 2019
Paper Number: ISOPE-I-19-115
... ABSTRACT The paper examines the effects of, corrosion induced, wall-thinning on buckling of torispherical, hemispherical and ellipsoidal domed closures. It is assumed that the wall is corroded on outside, only. The ratio of corroded wall thickness, t c , to non-corroded thickness, t, is varied...
Proceedings Papers

Paper presented at the The 29th International Ocean and Polar Engineering Conference, June 16–21, 2019
Paper Number: ISOPE-I-19-214
..., and method to calculate SCF from FE results is introduced, then models bearing forces in two directions (0° and 45°) with different parameters (the angel between the bracing and tower, the diameter and wall thickness of the bracing, the wall thickness of tower) are calculated using shell element, in this way...
Proceedings Papers

Paper presented at the The 29th International Ocean and Polar Engineering Conference, June 16–21, 2019
Paper Number: ISOPE-I-19-123
... to calculate mean pipeline embedment. midstream oil & gas correlation upstream oil & gas submerged weight regression algorithm local polynomial regression dimension prediction classification algorithm predictor machine learning wall thickness algorithm curvature statistical model...
Proceedings Papers

Paper presented at the The 29th International Ocean and Polar Engineering Conference, June 16–21, 2019
Paper Number: ISOPE-I-19-590
... Line Pipes in the range of diameters between 18" and 28" and wall thickness up to 40 mm, to demonstrate their suitability for sour service, offshore and low temperature applications. In particular, Sulphide Stress Corrosion Cracking resistance was explored by Four Point Bending Tests in environments...
Proceedings Papers

Paper presented at the The 28th International Ocean and Polar Engineering Conference, June 10–15, 2018
Paper Number: ISOPE-I-18-109
... are summarized. fatigue characteristic ool length assessment subsea system ool fatigue life calm buoy fatigue damage west africa pipeline wall thickness upstream oil & gas floating production system characteristic fpso buoy unit displacement wind sea exposure time buoy stress...
Proceedings Papers

Paper presented at the The 28th International Ocean and Polar Engineering Conference, June 10–15, 2018
Paper Number: ISOPE-I-18-699
... or inner diameter or wall thickness, respectively. Thus, the geometry of the tube section can be adapted to the stress distribution without the need of butt welding. It is figured out that with using shaped pipes, the framework can be optimized and the total weight of the structure can be reduced...
Proceedings Papers

Paper presented at the The 28th International Ocean and Polar Engineering Conference, June 10–15, 2018
Paper Number: ISOPE-I-18-716
... wall thickness hms incentive analysis gas monetization lng new material technology pricing midstream oil & gas stainless steel material cost tank hms material lng tank cost savings material technology fabrication cost strength allowable stress liquified natural gas New...
Proceedings Papers

Paper presented at the The 28th International Ocean and Polar Engineering Conference, June 10–15, 2018
Paper Number: ISOPE-I-18-448
... weld toughness wall thickness non-destructive testing strength heat input acc steel weld seam metallic material metals & mining seamless pipe single value subsea system weldability hardness upstream oil & gas welding drilling equipment pipe application requirement...
Proceedings Papers

Paper presented at the The 27th International Ocean and Polar Engineering Conference, June 25–30, 2017
Paper Number: ISOPE-I-17-709
..., and full-scale testing (FST) to measure pipe strain capacity. tsc piping design proc piping simulation offshore exxonmobil hilo misalignment misalignment fairchild equation flaw size prediction overmatch pipeline benchmark case wall thickness flaw height weld strength overmatch...
Proceedings Papers

Paper presented at the The 27th International Ocean and Polar Engineering Conference, June 25–30, 2017
Paper Number: ISOPE-I-17-673
... loading can have a significant influence on the strain capacity of girth welds. The major effect of biaxial loading is an increase in the crack driving force. In comparison, the materials resistance to fracture appears to be similar under uniaxial and biaxial loading. wall thickness prediction...
Proceedings Papers

Paper presented at the The 27th International Ocean and Polar Engineering Conference, June 25–30, 2017
Paper Number: ISOPE-I-17-250
... of grade X100 / S690. Several industrial trials with various pipe dimensions and a wall thickness up to 40 mm were performed and were assessed in an experimental program for mechanical testing with tensile, CVN impact and hardness measurements. The micro structure was investigated by optical light...
Proceedings Papers

Paper presented at the The 26th International Ocean and Polar Engineering Conference, June 26–July 2, 2016
Paper Number: ISOPE-I-16-201
... wind turbine offshore wind turbine optimal design loading fowt renewable energy transition piece tendon wall thickness stiffness support system floater platform design Optimal Design and Experimental Evaluation of a TLP for FOWT at Moderate Water Depth Xun Meng1, Xiaohan Liu1, Huiyuan...
Proceedings Papers

Paper presented at the The 26th International Ocean and Polar Engineering Conference, June 26–July 2, 2016
Paper Number: ISOPE-I-16-109
... of the proposed approach. Between them they cover the more popular failure prediction equations. Codified deterministic methods use unfavourable data; e.g. maximum corrosion depth, maximum corrosion rate, maximum design pressure and minimum wall thickness without allowing for uncertainties (Amirat et al, 2006...
Proceedings Papers

Paper presented at the The 26th International Ocean and Polar Engineering Conference, June 26–July 2, 2016
Paper Number: ISOPE-I-16-668
.... The combined effect of the ovality and the wall thickness to outside diameter ratio (t/D) on the collapse pressure is derived from finite element analysis and the prediction formula constructed by DNV and Tamano. This study provides a reliable and beneficial solution for line pipe design in deepwater using R...

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