NDLI: Improved Prediction of External Pressure Collapse of Seamless Pipe

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Navarro, Josef Cooper, Philip
Copyright Year	2009
Abstract	Seamless pipe typically features well controlled average wall thickness around its cross-section, but is prone to significant local thickness variation arising from the manufacturing process. Pipeline design codes, such as DNV OS-F101, provide little guidance on how to treat thickness variation whilst designing for collapse resistance. Standard practice is to consider minimum wall thickness across the whole cross-section, an assumption that two dimensional finite element simulations have proven conservative. This justifies the need for an improved design method. A program of simulations has been carried out to investigate the effect of wall thickness variation on collapse pressure. A modification to the DNV OS-F101 collapse design equation using average wall thickness over the whole crossection together with a fabrication factor is presented based on the results of this study. The fabrication factor de-rates the collapse pressure according to the amount of thickness variation present. The correction has been calibrated for thickness variations up to the maximum permitted by typical line pipe specifications. A number of FE trials demonstrate that the proposed formula predicts simulated collapse pressures with 98% accuracy. Adopting this method could provide significant wall thickness savings for deep water flowlines which in turn could lead to a reduction in steel costs and transportation and lay vessel requirements.
Sponsorship	Ocean, Offshore and Arctic Engineering Division
Starting Page	351
Ending Page	358
Page Count	8
File Format	PDF
ISBN	9780791843437
DOI	10.1115/OMAE2009-79463
e-ISBN	9780791838440
Volume Number	Volume 3: Pipeline and Riser Technology
Conference Proceedings	ASME 2009 28th International Conference on Ocean, Offshore and Arctic Engineering
Language	English
Publisher Date	2009-05-31
Publisher Place	Honolulu, Hawaii, USA
Access Restriction	Subscribed
Subject Keyword	Collapse Water Design methodology Vessels Wall thickness Steel Pressure Transportation systems Design Simulation External pressure Manufacturing Engineering simulation Finite element analysis Pipes Piping design
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Mr. Siddhartha Mukherjee siddhartha@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	ndl-support@iitkgp.ac.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Libarray of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Collapse of Reinforced Thermoplastic Pipe (RTP) Under External Pressure

Enhanced Collapse Resistance of Compressed Steel Pipes

Minimum Wall Thickness Requirements for Ultra Deep-Water Pipelines

Probabilistic Wall Thickness Verification for the TurkStream Pipeline

Nonlinear Finite Element Analysis of Class 1 Pressure Vessels

Effect of Ovality on the Collapse Pressure of a Subsea Pipeline at High Outer Diameter-to-Wall Thickness Ratios

Critical Local Buckling Conditions for Deepwater Pipelines

A Methodology for Constructing Complex 3D Cracked Body Finite Element Models Efficiently

Remaining Collapse Capacity of Corroded Pipelines

Improved Prediction of External Pressure Collapse of Seamless Pipe

Similar Documents

Collapse of Reinforced Thermoplastic Pipe (RTP) Under External Pressure

Enhanced Collapse Resistance of Compressed Steel Pipes

Minimum Wall Thickness Requirements for Ultra Deep-Water Pipelines

Probabilistic Wall Thickness Verification for the TurkStream Pipeline

Nonlinear Finite Element Analysis of Class 1 Pressure Vessels

Effect of Ovality on the Collapse Pressure of a Subsea Pipeline at High Outer Diameter-to-Wall Thickness Ratios

Critical Local Buckling Conditions for Deepwater Pipelines

A Methodology for Constructing Complex 3D Cracked Body Finite Element Models Efficiently

Remaining Collapse Capacity of Corroded Pipelines

Improved Prediction of External Pressure Collapse of Seamless Pipe