Open AccessInspection planning for fatigue cracks in offshore structures by Monte Carlo simulations
Author(s) -
H Neeraas,
Gerhard Ersdal,
Narve Oma,
N-Ch Hellevig
Publication year - 2019
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/700/1/012030
Subject(s) - monte carlo method , computer science , submarine pipeline , constant (computer programming) , line (geometry) , reliability engineering , engineering , statistics , mathematics , geometry , geotechnical engineering , programming language
Probability-informed inspection planning has traditionally a tendency to produce longer inspection intervals for older structures in contrast with the intuitive assumption that shorter inspection intervals are needed. In this paper an alternative method for probability-informed inspection planning is suggested based on a parameter updating rather than the general updating used in most cases. The proposed method produces constant inspection intervals after the theoretical first inspection. Further, the method produces reasonable inspection intervals more or less in line with what is used in practise in the offshore industry at present.