Measurements of flow parameters and decompression wave speed following rupture of rich gas pipelines, and comparison with GASDECOM

Botros, K. K.; Geerligs, J.; Zhou, Joe; Glover, Alan

doi:10.1016/j.ijpvp.2007.01.005

Cited by 23 publications

(6 citation statements)

References 4 publications

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“…For two-phase flow, the method developed by Mehra et al (1983) was used to calculate liquid-vapor phase equilibrium. The model was validated against the Botros's experiment pressure and temperature data (Botros et al, 2007). The results showed reasonably good agreement between the model predictions and experiment data.…”

Section: Impact Statementmentioning

confidence: 78%

Optimal emergency shutdown valve configuration for pressurised pipelines

Mahgerefteh

2022

Process Safety and Environmental Protection

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Pressurised pipelines are the primary mode of choice for transporting large quantities of hazardous fluids across the globe. The failure of such pipelines can lead to the release of significant amounts of flammable or toxic inventories, which may in turn present significant risks to life, environment and property. In order to mitigate such risks, various types of emergency shutdown valves (ESDVs), including Check Valves (CVs), Automatic Shut-off Valves (ASVs) and Remote Control Valves (RCVs), are installed along such pipelines as the front-line emergency mitigation tool.Accounting for the critically important ensuing in-pipe transient fluid flow, this thesis presents the development and application of a multi-objective optimisation study for selecting the ESDV type, number and spacing as well as its combinations and operational settings for striking a balance between the minimum valve capital cost against the efficacy in minimising and ultimately isolating outflow following pipeline failures.To my parents and brother: Thank you for your never-ending support and motivation.

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Section: Impact Statementmentioning

confidence: 78%

Optimal emergency shutdown valve configuration for pressurised pipelines

Mahgerefteh

2022

Process Safety and Environmental Protection

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“…Note that the gas decompression code GASDECOM was one of the first gas decompression models, and it might be one of the few models that use the BWRS equation of state (a modification of the Benedict-Webb-Rubin equation of state by Starling [30]) and account for both single-and two-phase gas decompression behaviors in quite a wide range of gas compositions. GASDECOM has been proven robust in many applications [31][32][33].…”

Section: Battelle Two-curve Modelmentioning

confidence: 99%

State-of-the-art review of fracture control technology for modern and vintage gas transmission pipelines

Zhu

2015

Engineering Fracture Mechanics

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“…However, full scale burst tests are prohibitively costly, except for major projects. Botros et al have experimentally investigated the decompression wave speed using a small diameter NPS 2 shock tube [9,10]. Phillips and Robinson have reported decompression wave speed measurements using an NPS 6 shock tube [11].…”

Section: Introductionmentioning

confidence: 99%

Investigation of the Effects of Pipe Wall Roughness and Pipe Diameter on the Decompression Wave Speed in Natural Gas Pipelines

Lü

Michal

Elshahomi

et al. 2012

Volume 3: Materials and Joining

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The shock tube experimental results have shown clearly that the decompression wave was slowed down in a pipe with a rough inner surface relative to that in a smooth pipe under comparable conditions. In the present paper a one-dimensional dynamic simulation model, named EPDECOM, was developed to investigate the effects of pipe wall roughness and pipe diameter on the decompression wave speed. Comparison with experimental results showed that the inclusion of frictional effects led to a better prediction than that of the widely used model implemented in GASDECOM. EPDECOM simulation results showed that the effect of roughness on the decompression wave speed is significant for pipe diameters less than 250 mm. However the decompression wave speed is nearly independent of the roughness for diameters above 250 mm as the frictional effect becomes negligible at such diameters. Disciplines Engineering | Science and Technology Studies Publication DetailsLu, C., Michal, G., Elshahomi, A., Godbole, A., Venton, P., Botros, K. K., Fletcher, L. & Rothwell, B. (2012). Investigation of the effects of pipe wall roughness and pipe diameter on the decompression wave speed in natural gas pipelines. 9th International Pipeline Conference, Volume 3: Materials and Joining (pp. 315-322 Calgary, AB, Canada ABSTRACTThe shock tube experimental results have shown clearly that the decompression wave is slowed down in a shock tube with a rough inner surface relative to that in a smooth tube under the same (or very similar) conditions. In the present paper a one-dimensional dynamic simulation model, named EPDECOM, was developed to investigate the effects of pipe wall roughness and pipe diameter on the decompression wave speed. Comparison with experimental results has shown that EPDECOM performs better than the commonly used model GASDECOM. EPDECOM simulation results show that the effect of roughness on the decompression wave speed is significant for small diameter pipes (D < ~250 mm), while this effect is negligible for pipes with D  ~250 mm. It is also found that the decompression wave speed is nearly independent on pipe diameter for D  250 mm pipes. INTRODUCTIONFracture propagation is a significant issue for pipelines transporting gases and the need to arrest a running fracture in a pipeline is paramount to the integrity and safety of the pipeline's operation. The Battelle Two-Curve Model (BTCM) is the most commonly used approach for the prediction of the minimum linepipe toughness ("arrest toughness") required to arrest a running fracture [1]. The BTCM involves the superposition of two curves: the gas decompression wave speed characteristic and the fracture propagation speed characteristic, each as a function of local gas pressure. The boundary between arrest and propagation of a running fracture is represented by

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Measurements of flow parameters and decompression wave speed following rupture of rich gas pipelines, and comparison with GASDECOM

Cited by 23 publications

References 4 publications

Optimal emergency shutdown valve configuration for pressurised pipelines

Optimal emergency shutdown valve configuration for pressurised pipelines

State-of-the-art review of fracture control technology for modern and vintage gas transmission pipelines

Investigation of the Effects of Pipe Wall Roughness and Pipe Diameter on the Decompression Wave Speed in Natural Gas Pipelines

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