0
Research Papers

Reliability Analysis of Marine Platforms Subject to Fatigue Damage for Risk Based Inspection Planning

[+] Author and Article Information
Ernesto Heredia-Zavoni

 Instituto Mexicano del Petróleo, Eje Central Lázaro Cárdenas 152, Distrito Federale 07730, Mexicoeheredia@imp.mx

Francisco Silva-González, Roberto Montes-Iturrizaga

 Instituto Mexicano del Petróleo, Eje Central Lázaro Cárdenas 152, Distrito Federale 07730, Mexico

J. Offshore Mech. Arct. Eng 130(4), 041001 (Sep 29, 2008) (9 pages) doi:10.1115/1.2904945 History: Received September 18, 2006; Revised November 15, 2007; Published September 29, 2008

The probability of failure of steel jacket platforms subjected to fatigue damage is computed by means of Monte Carlo simulations using limit state functions in which wave, wind, and deck loadings are expressed in terms of empirical functions of uncertain maximum wave height. Limit state functions associated with the base shear capacity of the jacket and the shear capacity of the deck legs were used. The sensitivity of the probability of failure to the coefficient of variation of resistance, of wave height, of resistance and loading biases, and to parameters in empirical loading functions, as well as the influence of the reserve strength ratio is analyzed using a simplified limit state function. Results from simulations are compared to those obtained with a formulation that relates the reserve strength ratio to the reliability index. An application to risk based inspection planning for extension of the service life of a platform is given.

FIGURES IN THIS ARTICLE
<>
Copyright © 2008 by American Society of Mechanical Engineers
Your Session has timed out. Please sign back in to continue.

References

Figures

Grahic Jump Location
Figure 2

States of damage

Grahic Jump Location
Figure 3

Comparison of results using the complete and the simplified limit state functions: (a) probability of failure; (b) reliability index

Grahic Jump Location
Figure 4

Variation of the conditional probability of failure versus RIF as a function of the coefficient of variation of maximum wave height, CH

Grahic Jump Location
Figure 5

Variation of the conditional probability of failure versus RIF as a function of the coefficient of variation of the resistance, CR

Grahic Jump Location
Figure 6

Variation of the conditional probability of failure versus RIF as a function of exponent α in wave loading function

Grahic Jump Location
Figure 7

Variation of conditional probability of failure versus RIF as a function of the coefficient of variation in the wave loading bias λ

Grahic Jump Location
Figure 8

Variation of conditional probability of failure versus RIF as a function of the coefficient of variation of the resistance bias γ

Grahic Jump Location
Figure 9

Effect of RSRi on the variation of the probability of failure with RIF

Grahic Jump Location
Figure 10

Conditional probability of failure versus RIF obtained with MC simulations and with the RSR formulation: Gumbel distribution for maximum wave height

Grahic Jump Location
Figure 11

Conditional probability of failure versus RIF obtained with MC simulations and with the RSR formulation: lognormal distribution for maximum wave height

Grahic Jump Location
Figure 12

Time varying reliability of Joint 1 and inspection times

Grahic Jump Location
Figure 13

Expected inspection and repair costs

Grahic Jump Location
Figure 14

Expected future and total costs

Grahic Jump Location
Figure 1

Jacket structural model

Tables

Errata

Discussions

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In