SAWL 485 for 48” Offshore Application in Thickness up to 41 mm

2008 ◽  
Author(s):  
Volker Schwinn ◽  
Alexander Parunov ◽  
Ju¨rgen Bauer ◽  
Pavel Stepanov
Keyword(s):  
Large Diameter ◽  
Development Program ◽  
Thick Wall ◽  
Diameter Pipe ◽  
Manufacturing Procedure ◽  
Pipeline Project ◽  
Qualification Testing ◽  
Nord Stream ◽  
Large Diameter Pipes ◽  
Subsea Pipelines

Vyksa Steel Works (VSW), part of United Metallurgical Company (OMK), has manufactured a trial batch of large diameter pipes for subsea pipelines in accordance with the DNV-OS-F101 standard and the specification of the Nord Stream project. The plates were produced by Dillinger Hu¨tte (DH). The batch included 1,220 mm (48″) diameter pipes of steel grade SAWL 485 (X70) with a wall thickness of 33 mm and 36 mm. All the requirements were met and OMK/VSW became Russia’s and the CIS’s first qualified producer of subsea pipes in accordance with DNV-OS-F101. In order to meet these high-class property requirements for thick wall pipes a successful development program was performed. The development program is outlined and the test results are explained. As a further consequence of the successful qualification work VSW became one of the two suppliers for the world’s largest and first 48″ diameter pipe subsea pipeline project (Nord Stream). Pipes will be supplied for the most sophisticated segment with wall thicknesses of 30.9 mm, 34.6 mm and even 41.0 mm. Results of manufacturing procedure qualification testing (MPQT) and start of production are presented.

Development on Simulation Method for Two-Phase Flow in Large Diameter Pipes With 90 Degree Elbows

2020 ◽  
Author(s):  
Yoshiteru Komuro ◽  
Atsushi Kodama ◽  
Yoshiyuki Kondo ◽  
Koichi Tanimoto ◽  
Takashi Hibiki
Keyword(s):  
Flow Regime ◽  
Fluid Model ◽  
Large Diameter ◽  
Simulation Method ◽  
Phase Flow ◽  
Two Phase ◽  
Diameter Pipe ◽  
Two Fluid Model ◽  
Large Diameter Pipes ◽  
Two Fluid

Abstract Two-phase flows are observed in various industrial plants and piping systems. Understanding two-phase flow behaviors such as flow patterns and unsteady void fraction in horizontal and vertical pipes are crucial in improving plant safety. Notably, the flow patterns observed in a large diameter pipe (approx. 4–6 in or larger) are significantly different from those observed in a medium diameter pipe. In a vertical large diameter pipe, no slug flow is observed due to the instantaneous slug bubble breakup caused by the surface instability. Besides, in a horizontal pipe, flow regime transition from stratification of liquid and gas to slug (plug) flow that induces unsteady flow should be taken into account. From this viewpoint, it is necessary to predict the flow regime in horizontal and vertical large diameter pipes with some elbows and to evaluate the unsteady flow regime. In this study, the simulation method based on the two-fluid model is developed. The two-fluid model is considered the most accurate model because the governing equations for mass, momentum, and energy transfer are formulated for each phase. When using the two-fluid model, some constitutive equations should be given in computing the momentum transfer between gas and liquid phases. In this study, several state-of-art constitutive equations of the bubble diameter, the interfacial drag force and non-drag forces such as the lift force and the bubble-bubble collision force, are implemented in the platform of ANSYS FLUENT. The developed simulation method is validated with visualization results and force from an air-water flow at the elbow of the piping system.

scholarly journals Technological support of quality in large diameter pipes with polyethylene coating

2018 ◽  
Vol 2018 (1) ◽  
pp. 41-45 ◽  
Author(s):  
Александр Банников ◽  
Alexandr Bannikov ◽  
Ольга Макарова ◽  
Olga Makarova ◽  
Василиса Алексейчук ◽  
...  
Keyword(s):  
Large Diameter ◽  
Processing Method ◽  
Pipe Plant ◽  
Technological Support ◽  
Large Diameter Pipe ◽  
Polyethylene Coating ◽  
Diameter Pipe ◽  
New Processing ◽  
Large Diameter Pipes

The paper reports the consideration of basic methods used at PC "Volga Pipe Plant" for processing large diameter pipe ends. Each of the methods used at the plant does not meet current requirements of the market that is why the necessity of a new processing method arose.

Large Diameter Pipe Design under Urban Constraints

2003 ◽  
Author(s):  
Jennifer McNutt ◽  
Mike Middleton ◽  
Dave Bennett ◽  
Bruce Corwin ◽  
Brett Grant
Keyword(s):  
Large Diameter ◽  
Large Diameter Pipe ◽  
Diameter Pipe

Structure and properties of strip for large-diameter pipe made from steel in strength categories Kh80–Kh100

Metallurgist ◽  
2009 ◽  
Vol 53 (3-4) ◽  
pp. 136-145 ◽  
Author(s):  
Yu. D. Morozov ◽  
A. M. Korchagin ◽  
V. V. Orlov ◽  
A. A. Stepanov ◽  
E. I. Khlusova ◽  
...  
Keyword(s):  
Large Diameter ◽  
Structure And Properties ◽  
Large Diameter Pipe ◽  
Diameter Pipe

A Study on Preparation Process Experiment of a Large Diameter Cylinder with High Precision

2014 ◽  
Vol 494-495 ◽  
pp. 317-320
Author(s):  
Hui Fan Zeng
Keyword(s):  
High Precision ◽  
Large Diameter ◽  
Raw Material ◽  
Thick Wall ◽  
Preparation Process ◽  
Processing Cost

A large diameter cylinder prepared by thick wall pipe as raw material presents the shortfalls such as high cost, difficulty in procurement, the increasing amount of labour and processing cost. This work proposed a large diameter cylinder with high precision. By conducting process experiments and compared with the preparing process of existing large diameter cylinder, the preparing process of the large diameter cylinder in this work is proved to be practical and economical.

Large Diameter Pipe under Combined Loading

1973 ◽  
Vol 99 (3) ◽  
pp. 521-536
Author(s):  
Jack G. Bouwkamp ◽  
R. M. Stephen
Keyword(s):  
Large Diameter ◽  
Combined Loading ◽  
Large Diameter Pipe ◽  
Diameter Pipe

Pressure Test Planning to Prevent Internal Corrosion by Residual Fluids

2012 ◽  
Author(s):  
Trevor Place ◽  
Greg Sasaki ◽  
Colin Cathrea ◽  
Michael Holm
Keyword(s):  
Structural Integrity ◽  
Large Diameter ◽  
Long Distance ◽  
Internal Corrosion ◽  
Pressure Testing ◽  
Practical Strategy ◽  
Leak Testing ◽  
Pressure Test ◽  
Transmission Pipeline ◽  
Pipeline Project

Strength and leak testing (AKA ‘hydrotesting’, and ‘pressure testing’) of pipeline projects remains a primary method of providing quality assurance on new pipeline construction, and for validating structural integrity of the as-built pipeline [1][2][3]. A myriad of regulations surround these activities to ensure soundness of the pipeline, security of the environment during and after the pressure testing operation, as well as personnel safety during these activities. CAN/CSA Z662-11 now includes important clauses to ensure that the pipeline designer/builder/operator consider the potential corrosive impacts of the pressure test media [4]. This paper briefly discusses some of the standard approaches used in the pipeline industry to address internal corrosion caused by pressure test mediums — which often vary according to the scope of the pipeline project (small versus large diameter, short versus very long pipelines) — as well as the rationale behind these different approaches. Case studies are presented to highlight the importance of considering pressure test medium corrosiveness. A practical strategy addressing the needs of long-distance transmission pipeline operators, involving a post-hydrotest inhibitor rinse, is presented.

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