2010, Volume 12, Issue 9
Strategic Study of CAE >> 2010, Volume 12, Issue 9
Reliability analysis of corroded oil and gas pipeline
Center for Urban Public Safety Research, Nankai University, Tianjin 300071, China
Next Previous
Abstract
ASME B31G is the international criteria to assess the failure stress of corroded pipeline, taking into account its conservatism, this paper studies the failure stress of corroded pipeline based on the modified B31G, and considers some random variables that contains pipeline wall thickness, corrosion rate, operating pressure, defect depth and so on, so a limit state function of corroded carrying Oil/Gas is established. Afterwards, the first order and second moment method is employed for research on the reliability of corroded pipeline, and calculation on reliability index, failure probability and remaining life. In addition, to further standardize the management of corrosion of pipelines, taking into account the relevant provisions of American Petroleum Institute, different failure probability of pipeline were graded. In the final, a sensitivity analysis was carried out on random variables involved in the problem. The results of sensitivity analysis indicate that the failure probability is the most sensitive to the coefficient of variation of wall thickness.
Keywords
corroded pipeline ; reliability analysis ; FORM ; failure probability
Figures
图1
图2
图3
References
[ 1 ] Levin S T.Cause and frequency of failures on gas mains in the USSR [ J] .Pipes and Pipeline Int,1993 ,38 ( 4 ) :9 -13 link1
[ 2 ] 王春兰.油气长输腐蚀管道剩余强度评价技术研究[J/OL].西南石油学院,2003.http://www.lw23.com/lunwen_940435507
[ 3 ] Lee O S, Kim D H.Reliability of buried pipeline using FORM and Monte Carlo simulation [ J ] . Key Engineering Materials, 2006 ,321 -323 :1543 -1547 link1
[ 4 ] 刘永寿,王文,冯震宙,等.腐蚀管道的剩余强度与可靠性分析[J].强度与环境,2008,35(3):52-57 link1
[ 5 ] 赵事,蒋晓斌,高惠临.腐蚀管道的失效概率和剩余寿命预测方法[J].油气储运,2006,25(12):28-31 link1
[ 6 ] Teixeira A P, Guedes S C, Netto T A, et al.Reliability of pipe- lines with corrosion defects [ J] .International Journal of Pressure Vessels and Piping, 2008 ,85 ( 4 ) :228 -237 link1
[ 7 ] Lee O S, Kim D H.Effect of distribution types of variables on re- liability estimation of buried pipelines [ A ] .Third International Conference on Experimental Mechanics and Third Conference of the Asian Committee on Experimental Mechanics [ C] .2005 : 141 -147
[ 8 ] O’ Grady T J II, Hisey D T, Kiefner J F.Pressure calculation for corroded pipe developed [ J] .Oil and Gas Journal, 1992 ,42 :64 -68
[ 9 ] American Petroleum Institute.Risk -based Inspection Base Re- source Document [ G] .USA: API Recommended Practice, 581 , 2000
[10] 施哲雄,王志文.基于模拟的腐蚀管道可靠性分析[J].中国安全科学学报,2003,13(7):67-70 link1
[11] Cosham A, Hopkins P, Macdonald K A.Best practice for the as- sessment of defects in pipelines -corrosion [ J ] .Engineering Failure Analysis, 2007 ,14 ( 7 ) :1245 -1265 link1
京公网安备 11010502051620号
