Inspection reliability for offshore structures

W. D. Dover; F. P. Brennan; R. F. Karé; A. Staceyl

doi:10.1115/OMAE2003-37404

Inspection reliability for offshore structures

W. D. Dover, F. P. Brennan, R. F. Karé, A. Staceyl

Naval Architecture, Ocean And Marine Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution book

4 Citations (Scopus)

Abstract

The assessment of fatigue cracks in offshore structures involves stress analysis, fatigue fracture mechanics analysis and knowledge of the likely loading on the damaged member. Before embarking on the analysis it is necessary to assess the input information on the presence, location and size of any defect. This requires detailed information on the reliability of the non-destructive testing technique used for the inspection. Inspection reliability data is also extremely important for inspection scheduling especially in situations where reliability based inspection scheduling is to be used. To produce this type of data is expensive and time consuming as it involves blind trials, and a large sample containing realistic defects. The ICON project, a major EU Industry funded project, addressed this problem and conducted inspection reliability trials for the offshore industry. ICON and the subsequent ICON User Group produced a large database on fatigue crack detection and sizing techniques. This data is now available in the ICON User group Software. The paper has used this software to produce POD data for ACFM and MPI. The POD data has been assessed in terms of crack categories (including categorisation based on BS7910), the influence of spurious indications, and in terms of the influence it has on fatigue crack growth predictions.

Original language	English
Title of host publication	Proceedings of the International Conference on Offshore Mechanics and Arctic Engineering - OMAE
Editors	M. Salama, R.C. Ertekin, D.T. Valentine, W.L. Kuehnlein
Pages	295-299
Number of pages	5
Volume	3
DOIs	https://doi.org/10.1115/OMAE2003-37404
Publication status	Published - 17 Dec 2003
Event	22nd International Conference on Offshore Mechanics and Arctic Engineering; Materials Technology Ocean Engineering Polar and Arctic Sciences and Technology Workshops - Cancun, Mexico Duration: 8 Jun 2001 → 13 Jun 2001

Conference

Conference	22nd International Conference on Offshore Mechanics and Arctic Engineering; Materials Technology Ocean Engineering Polar and Arctic Sciences and Technology Workshops
Country/Territory	Mexico
City	Cancun
Period	8/06/01 → 13/06/01

Keywords

inspection
offshore structures
reliability
fatigue cracks
stress analysis

Access to Document

10.1115/OMAE2003-37404

Cite this

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title = "Inspection reliability for offshore structures",

abstract = "The assessment of fatigue cracks in offshore structures involves stress analysis, fatigue fracture mechanics analysis and knowledge of the likely loading on the damaged member. Before embarking on the analysis it is necessary to assess the input information on the presence, location and size of any defect. This requires detailed information on the reliability of the non-destructive testing technique used for the inspection. Inspection reliability data is also extremely important for inspection scheduling especially in situations where reliability based inspection scheduling is to be used. To produce this type of data is expensive and time consuming as it involves blind trials, and a large sample containing realistic defects. The ICON project, a major EU Industry funded project, addressed this problem and conducted inspection reliability trials for the offshore industry. ICON and the subsequent ICON User Group produced a large database on fatigue crack detection and sizing techniques. This data is now available in the ICON User group Software. The paper has used this software to produce POD data for ACFM and MPI. The POD data has been assessed in terms of crack categories (including categorisation based on BS7910), the influence of spurious indications, and in terms of the influence it has on fatigue crack growth predictions.",

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Dover, WD, Brennan, FP, Karé, RF & Staceyl, A 2003, Inspection reliability for offshore structures. in M Salama, RC Ertekin, DT Valentine & WL Kuehnlein (eds), Proceedings of the International Conference on Offshore Mechanics and Arctic Engineering - OMAE. vol. 3, OMAE2003-37404, pp. 295-299, 22nd International Conference on Offshore Mechanics and Arctic Engineering; Materials Technology Ocean Engineering Polar and Arctic Sciences and Technology Workshops, Cancun, Mexico, 8/06/01. https://doi.org/10.1115/OMAE2003-37404

Inspection reliability for offshore structures. / Dover, W. D.; Brennan, F. P.; Karé, R. F.; Staceyl, A.

Proceedings of the International Conference on Offshore Mechanics and Arctic Engineering - OMAE. ed. / M. Salama; R.C. Ertekin; D.T. Valentine; W.L. Kuehnlein. Vol. 3 2003. p. 295-299 OMAE2003-37404.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution book

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N2 - The assessment of fatigue cracks in offshore structures involves stress analysis, fatigue fracture mechanics analysis and knowledge of the likely loading on the damaged member. Before embarking on the analysis it is necessary to assess the input information on the presence, location and size of any defect. This requires detailed information on the reliability of the non-destructive testing technique used for the inspection. Inspection reliability data is also extremely important for inspection scheduling especially in situations where reliability based inspection scheduling is to be used. To produce this type of data is expensive and time consuming as it involves blind trials, and a large sample containing realistic defects. The ICON project, a major EU Industry funded project, addressed this problem and conducted inspection reliability trials for the offshore industry. ICON and the subsequent ICON User Group produced a large database on fatigue crack detection and sizing techniques. This data is now available in the ICON User group Software. The paper has used this software to produce POD data for ACFM and MPI. The POD data has been assessed in terms of crack categories (including categorisation based on BS7910), the influence of spurious indications, and in terms of the influence it has on fatigue crack growth predictions.

AB - The assessment of fatigue cracks in offshore structures involves stress analysis, fatigue fracture mechanics analysis and knowledge of the likely loading on the damaged member. Before embarking on the analysis it is necessary to assess the input information on the presence, location and size of any defect. This requires detailed information on the reliability of the non-destructive testing technique used for the inspection. Inspection reliability data is also extremely important for inspection scheduling especially in situations where reliability based inspection scheduling is to be used. To produce this type of data is expensive and time consuming as it involves blind trials, and a large sample containing realistic defects. The ICON project, a major EU Industry funded project, addressed this problem and conducted inspection reliability trials for the offshore industry. ICON and the subsequent ICON User Group produced a large database on fatigue crack detection and sizing techniques. This data is now available in the ICON User group Software. The paper has used this software to produce POD data for ACFM and MPI. The POD data has been assessed in terms of crack categories (including categorisation based on BS7910), the influence of spurious indications, and in terms of the influence it has on fatigue crack growth predictions.

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ER -

Inspection reliability for offshore structures

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