The use of decision analysis for structural risks management

Conference · Tue Dec 31 04:00:00 EST 1996

OSTI ID:455494

Maroini, A ^[1]

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1. Bureau Veritas, Paris-La-Defense (France)

Offshore platforms are typically large scale assets for which it is vital to optimize resources allocation. This paper proposes and describes an engineering approach of structural risks management whereby objectives are defined and performance assessed against the objectives. The standpoint of this methodology is that a platform exists to serve some functional objectives. If a damage occurs, its consequences in general, and, in particular, the risks to the functional objectives should be examined to decide if and when to repair. The proposed multi-attribute decision technique provides a framework for integrating various categories of risks, handling uncertainties, and for modelling preferences criteria using the utility function of the organization; and it is argued that this can be helpful in developing rational means for maintaining offshore structures, or extending their lifetime. The paper discusses how such a methodology can enhance the management of structural risks by identifying optimal decisions. In order to illustrate the introduced concepts and methods, a platform suffering a local fatigue damage on one of its important joints is studied, demonstrating in the same time, realistic application of decision methodology in the context of the requalification of existing offshore platforms.

• OSTI ID: 455494
• Report Number(s): CONF-9606279--; ISBN 0-7918-1491-2
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
DEFORMATION
FAILURE MODE ANALYSIS
FATIGUE
MECHANICAL STRUCTURES
OFFSHORE PLATFORMS
RISK ASSESSMENT
SAFETY ENGINEERING