The Experts below are selected from a list of 18 Experts worldwide ranked by ideXlab platform
Mckee Kristoffer - One of the best experts on this subject based on the ideXlab platform.
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Design and installation of subsea cable, pipeline and umbilical crossing interfaces
'Elsevier BV', 2017Co-Authors: Reda Ahmed, Howard Ian, Forbes Gareth, Mckee KristofferAbstract:Deterioration of subsea cable, pipeline and umbilical crossings often occur due to relative movement between the crossing members. Any crossing design should aim to achieve a sound, fit for purpose solution that will be maintenance free over the crossing life. Due to the increased density of subsea fields, crossing instances need to be increasingly accommodated. Current subsea design codes are not explicit in the criteria for subsea crossings, beyond recommending pipeline separation distances.The work within this paper describes two case studies in the novel use of articulated padding applied to the crossing member, using the crossed pipeline as a support and then using the articulated padding resting on traditional Grout-Bag supports. The results highlight the ability of the articulated padding to provide the required separation on subsea crossings without the need for extra support design. It is also shown that the articulated padding can be used on Grout-Bag shoulder supports to allow full subsea crossing separation for crossing lays that will undergo large environmental loading conditions, and hence relative motion. The results presented also provide a basis for the development of future industry standards incorporating articulated padding designs
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Design and installation of subsea cable, pipeline and umbilical crossing interfaces
Elsevier Ltd, 2017Co-Authors: Reda Ahmed, Howard Ian, Forbes Gareth, Sultan Ibrahim, Mckee KristofferAbstract:Deterioration of subsea cable, pipeline and umbilical crossings often occur due to relative movement between the crossing members. Any crossing design should aim to achieve a sound, fit for purpose solution that will be maintenance free over the crossing life. Due to the increased density of subsea fields, crossing instances need to be increasingly accommodated. Current subsea design codes are not explicit in the criteria for subsea crossings, beyond recommending pipeline separation distances. The work within this paper describes two case studies in the novel use of articulated padding applied to the crossing member, using the crossed pipeline as a support and then using the articulated padding resting on traditional Grout-Bag supports. The results highlight the ability of the articulated padding to provide the required separation on subsea crossings without the need for extra support design. It is also shown that the articulated padding can be used on Grout-Bag shoulder supports to allow full subsea crossing separation for crossing lays that will undergo large environmental loading conditions, and hence relative motion. The results presented also provide a basis for the development of future industry standards incorporating articulated padding designs. © 2017 Elsevier Lt
Reda Ahmed - One of the best experts on this subject based on the ideXlab platform.
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Design and installation of subsea cable, pipeline and umbilical crossing interfaces
'Elsevier BV', 2017Co-Authors: Reda Ahmed, Howard Ian, Forbes Gareth, Mckee KristofferAbstract:Deterioration of subsea cable, pipeline and umbilical crossings often occur due to relative movement between the crossing members. Any crossing design should aim to achieve a sound, fit for purpose solution that will be maintenance free over the crossing life. Due to the increased density of subsea fields, crossing instances need to be increasingly accommodated. Current subsea design codes are not explicit in the criteria for subsea crossings, beyond recommending pipeline separation distances.The work within this paper describes two case studies in the novel use of articulated padding applied to the crossing member, using the crossed pipeline as a support and then using the articulated padding resting on traditional Grout-Bag supports. The results highlight the ability of the articulated padding to provide the required separation on subsea crossings without the need for extra support design. It is also shown that the articulated padding can be used on Grout-Bag shoulder supports to allow full subsea crossing separation for crossing lays that will undergo large environmental loading conditions, and hence relative motion. The results presented also provide a basis for the development of future industry standards incorporating articulated padding designs
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Design and installation of subsea cable, pipeline and umbilical crossing interfaces
Elsevier Ltd, 2017Co-Authors: Reda Ahmed, Howard Ian, Forbes Gareth, Sultan Ibrahim, Mckee KristofferAbstract:Deterioration of subsea cable, pipeline and umbilical crossings often occur due to relative movement between the crossing members. Any crossing design should aim to achieve a sound, fit for purpose solution that will be maintenance free over the crossing life. Due to the increased density of subsea fields, crossing instances need to be increasingly accommodated. Current subsea design codes are not explicit in the criteria for subsea crossings, beyond recommending pipeline separation distances. The work within this paper describes two case studies in the novel use of articulated padding applied to the crossing member, using the crossed pipeline as a support and then using the articulated padding resting on traditional Grout-Bag supports. The results highlight the ability of the articulated padding to provide the required separation on subsea crossings without the need for extra support design. It is also shown that the articulated padding can be used on Grout-Bag shoulder supports to allow full subsea crossing separation for crossing lays that will undergo large environmental loading conditions, and hence relative motion. The results presented also provide a basis for the development of future industry standards incorporating articulated padding designs. © 2017 Elsevier Lt
Howard Ian - One of the best experts on this subject based on the ideXlab platform.
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Design and installation of subsea cable, pipeline and umbilical crossing interfaces
'Elsevier BV', 2017Co-Authors: Reda Ahmed, Howard Ian, Forbes Gareth, Mckee KristofferAbstract:Deterioration of subsea cable, pipeline and umbilical crossings often occur due to relative movement between the crossing members. Any crossing design should aim to achieve a sound, fit for purpose solution that will be maintenance free over the crossing life. Due to the increased density of subsea fields, crossing instances need to be increasingly accommodated. Current subsea design codes are not explicit in the criteria for subsea crossings, beyond recommending pipeline separation distances.The work within this paper describes two case studies in the novel use of articulated padding applied to the crossing member, using the crossed pipeline as a support and then using the articulated padding resting on traditional Grout-Bag supports. The results highlight the ability of the articulated padding to provide the required separation on subsea crossings without the need for extra support design. It is also shown that the articulated padding can be used on Grout-Bag shoulder supports to allow full subsea crossing separation for crossing lays that will undergo large environmental loading conditions, and hence relative motion. The results presented also provide a basis for the development of future industry standards incorporating articulated padding designs
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Design and installation of subsea cable, pipeline and umbilical crossing interfaces
Elsevier Ltd, 2017Co-Authors: Reda Ahmed, Howard Ian, Forbes Gareth, Sultan Ibrahim, Mckee KristofferAbstract:Deterioration of subsea cable, pipeline and umbilical crossings often occur due to relative movement between the crossing members. Any crossing design should aim to achieve a sound, fit for purpose solution that will be maintenance free over the crossing life. Due to the increased density of subsea fields, crossing instances need to be increasingly accommodated. Current subsea design codes are not explicit in the criteria for subsea crossings, beyond recommending pipeline separation distances. The work within this paper describes two case studies in the novel use of articulated padding applied to the crossing member, using the crossed pipeline as a support and then using the articulated padding resting on traditional Grout-Bag supports. The results highlight the ability of the articulated padding to provide the required separation on subsea crossings without the need for extra support design. It is also shown that the articulated padding can be used on Grout-Bag shoulder supports to allow full subsea crossing separation for crossing lays that will undergo large environmental loading conditions, and hence relative motion. The results presented also provide a basis for the development of future industry standards incorporating articulated padding designs. © 2017 Elsevier Lt
Forbes Gareth - One of the best experts on this subject based on the ideXlab platform.
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Design and installation of subsea cable, pipeline and umbilical crossing interfaces
'Elsevier BV', 2017Co-Authors: Reda Ahmed, Howard Ian, Forbes Gareth, Mckee KristofferAbstract:Deterioration of subsea cable, pipeline and umbilical crossings often occur due to relative movement between the crossing members. Any crossing design should aim to achieve a sound, fit for purpose solution that will be maintenance free over the crossing life. Due to the increased density of subsea fields, crossing instances need to be increasingly accommodated. Current subsea design codes are not explicit in the criteria for subsea crossings, beyond recommending pipeline separation distances.The work within this paper describes two case studies in the novel use of articulated padding applied to the crossing member, using the crossed pipeline as a support and then using the articulated padding resting on traditional Grout-Bag supports. The results highlight the ability of the articulated padding to provide the required separation on subsea crossings without the need for extra support design. It is also shown that the articulated padding can be used on Grout-Bag shoulder supports to allow full subsea crossing separation for crossing lays that will undergo large environmental loading conditions, and hence relative motion. The results presented also provide a basis for the development of future industry standards incorporating articulated padding designs
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Design and installation of subsea cable, pipeline and umbilical crossing interfaces
Elsevier Ltd, 2017Co-Authors: Reda Ahmed, Howard Ian, Forbes Gareth, Sultan Ibrahim, Mckee KristofferAbstract:Deterioration of subsea cable, pipeline and umbilical crossings often occur due to relative movement between the crossing members. Any crossing design should aim to achieve a sound, fit for purpose solution that will be maintenance free over the crossing life. Due to the increased density of subsea fields, crossing instances need to be increasingly accommodated. Current subsea design codes are not explicit in the criteria for subsea crossings, beyond recommending pipeline separation distances. The work within this paper describes two case studies in the novel use of articulated padding applied to the crossing member, using the crossed pipeline as a support and then using the articulated padding resting on traditional Grout-Bag supports. The results highlight the ability of the articulated padding to provide the required separation on subsea crossings without the need for extra support design. It is also shown that the articulated padding can be used on Grout-Bag shoulder supports to allow full subsea crossing separation for crossing lays that will undergo large environmental loading conditions, and hence relative motion. The results presented also provide a basis for the development of future industry standards incorporating articulated padding designs. © 2017 Elsevier Lt
Mohd Hanifa Hazlinda - One of the best experts on this subject based on the ideXlab platform.
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Offshore Pipeline Free Spanning Analysis Based On DNV Design Code
Universiti Teknologi Petronas, 2008Co-Authors: Mohd Hanifa HazlindaAbstract:Offshore pipeline has proven the most economical means of large scale transportation method for crude oil, natural gas, and their products for oil and gas exploration. Problems faced during pipeline mechanical design is free span formation due to seabed unevenness, scouring action, and exposure to current and wave flow. 1bis work presents proper free span assessment to avoid excessive loads and deformation as pipeline could undergo oscillatory force, excessive bending stresses, and buckling. Analysis spreadsheets were created for free span analysis according to latest Det Norske Veritas (DNV) design codes; DNV-RP-Fl05 "Free Spanning Pipelines, February 2006". Results obtained were presented in graphs and tables. Parametric studies were performed to determine the span length for different outside diameter, safety factor and boundary condition. Results indicated that pipeline failure occurred if span length is longer than the permitted length. 1bis can be solved by rerouting, span correction, installation of Grout Bag support or mattresses
