NDLI: Reliability estimation of buried gas pipelines in terms of various types of random variable distribution

Content Provider	Springer Nature Link
Author	Lee, Ouk Sub Kim, Dong Hyeok
Copyright Year	2005
Abstract	This paper presents the effects of corrosion environments of failure pressure model for buried pipelines on failure prediction by using a failure probability. The FORM (first order reliability method) is used in order to estimate the failure probability in the buried pipelines with corrosion defects. The effects of varying distribution types of random variables such as normal, lognormal and Weibull distributions on the failure probability of buried pipelines are systematically investigated. It is found that the failure probability for the MB31G model is larger than that for the B31G model. And the failure probability is estimated as the largest for the Weibull distribution and the smallest for the normal distribution. The effect of data scattering in corrosion environments on failure probability is also investigated and it is recognized that the scattering of wall thickness and yield strength of pipeline affects the failure probability significantly. The normalized margin is defined and estimated. Furthermore, the normalized margin is used to predict the failure probability using the fitting lines between failure probability and normalized margin.
Starting Page	1280
Ending Page	1289
Page Count	10
File Format	PDF
ISSN	1738494X
Journal	Journal of Mechanical Science and Technology
Volume Number	19
Issue Number	6
Language	English
Publisher	Korean Society of Mechanical Engineers
Publisher Date	2005-01-01
Publisher Place	Seoul
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Buried Pipeline Reliability Estimation Failure Probability FORM (first order reliability method) Normal Lognormal and Weibull Distributions Corrosion Failure Pressure Model Normalized Margin Mechanical Engineering Vibration, Dynamical Systems, Control Industrial and Production Engineering
Content Type	Text
Resource Type	Article
Subject	Mechanics of Materials Mechanical Engineering

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