Evaluation of the Suitability of X100 Steel Pipes for High Pressure Gas Transportation Pipelines by Full Scale Tests

2004 ◽  
Author(s):  
G. Demofonti ◽  
G. Mannucci ◽  
H. G. Hillenbrand ◽  
D. Harris
Keyword(s):  
High Pressure ◽  
Fracture Propagation ◽  
Full Scale ◽  
Gas Pipeline ◽  
Defect Tolerance ◽  
Steel Pipes ◽  
Natural Gas Pipeline ◽  
Safe Level ◽  
Cold Bending ◽  
Full Scale Tests

In order to increase the knowledge necessary for the utilisation of grade X100 steel pipes, and to consolidate preliminary indications regarding the safe level of toughness required to control the ductile fracture propagation event within X100 gas pipeline, an ECSC-Demonstration Project, (DemoPipe), partially sponsored by EPRG, has been performed (2001–2004) using TMCP X100 pipes with a diameter of 36”. The project examines the problems of building a new high grade steel on-shore gas pipeline, with special emphasis given to the issues of the field welding technologies and selection of consumables, girth weld defect tolerance, field cold bending, and the fracture propagation behaviour in a high-pressure natural gas pipeline. In order to achieve these stated aims, a dedicated programme of laboratory and full scale tests was included in the project. This paper presents a summary of some of the results obtained, together with a discussion regarding their applicability to future X100 pipelines.

Evaluation of Harm Effect Distances after High-Pressure Natural Gas Pipeline Leakage

ICPTT 2013 ◽  
2013 ◽  
Author(s):  
Xin Wang ◽  
Huabing Zhang ◽  
Wanzhou Cheng ◽  
Honglong Zheng
Keyword(s):  
High Pressure ◽  
Natural Gas ◽  
Gas Pipeline ◽  
Natural Gas Pipeline

Design and Performance of High-Pressure Blowoff Silencers

1971 ◽  
Vol 93 (2) ◽  
pp. 695-702 ◽  
Author(s):  
Cecil R. Sparks ◽  
D. E. Lindgren
Keyword(s):  
High Pressure ◽  
Natural Gas ◽  
Field Data ◽  
Fluid Dynamic ◽  
Gas Pipeline ◽  
Noise Generation ◽  
Test Results ◽  
Natural Gas Pipeline ◽  
And Performance

Through the application of fluid dynamic and acoustic theory, the noise generation of a high pressure blowoff can be approximated. The effects of silencer configurations can likewise be predicted through the application of pertinent field data taken to define performance of the silencer components. This paper describes recent test results and their application to improved silencer design for natural gas pipeline applications.

scholarly journals Full-Scale Experimental Verification of the Explosion Shock Wave Model of a Natural Gas Pipeline

2018 ◽  
Vol 2018 ◽  
pp. 1-14
Author(s):  
Shaohua Dong ◽  
Yinuo Chen ◽  
Xuan Sun ◽  
Hang Zhang
Keyword(s):  
Shock Wave ◽  
Natural Gas ◽  
Wave Model ◽  
Full Scale ◽  
Gas Pipeline ◽  
Operating Conditions ◽  
Natural Gas Pipeline ◽  
Tnt Equivalent ◽  
The Absolute ◽  
Shock Wave Model

As developments in natural gas pipelines increasingly incorporate higher grades of steel, larger diameters, and higher pressures, the consequences of an accident caused by leakage, explosion, or ignition become progressively more severe. Currently, major technical obstacles include the quantification of the impact of an explosion shock wave of a high-strength, large-diameter natural gas pipeline, and the selection of a reasonable shock wave overpressure model appropriate to the operating conditions. In this paper, six models of shock wave overpressure theories, namely, the TNT equivalent method, the TNO method, the multienergy method, the British Gas method, the Shell method, and the Lee formula, were compared and analyzed to determine their applicability. A shock wave model adapted to the characteristics of a full-scale test was proposed, and the model verification of a full-scale blasting test was conducted on pipelines with diameters of 1422 mm and 1219 mm, respectively. Subsequent results indicated that the modifications to the TNT equivalent and the test parameters correlated with changes in the suitability of the model. Henrych’s formula calculation model of the British Gas method was found to correspond strongly with the measured value, in which the absolute value of the relative error was less than 30% and the absolute error within the range of 78 m to 800 m was no more than 0.05 MPa. Thus, the Henrych formula was adopted as the primary model formula for the shock wave overpressure calculations in this study. To further correct the error of the model, the trend between the curve obtained by the Henrych formula and the fitting curve of the measured value was compared and analyzed. The positive and negative compensations of the shaded area before and after the intersection point were carried out, and the new error correction overpressure model formula was obtained by fitting, with the error controlled within 15%.

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