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Abstract
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Article Information:
Reliability Analysis of Jacket Platforms in Malaysia-Environmental Load Factors
Nelson J. Cossa, Narayanan S. Potty, Arazi B. Idrus, Mohd Foad Abdul Hamid and Zafarullah Nizamani
Corresponding Author: Nelson Julio Cossa
Submitted: January 12, 2012
Accepted: February 17, 2012
Published: October 01, 2012 |
Abstract:
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In recent years, there has been a significant trend for adoption of the ISO-19902 standards for design
of fixed steel offshore structures. The implementation of this standard aims to provide a harmonized
international framework of design. Unlike, the traditional and currently used, WSD-method, the ISO-19902,
follows the LRFD-method, that consists of both partial load and resistance factors. These partial factors are
usually calibrated through reliability analysis. In these analyses, the performance of a structure is defined by
the limit state function for the critical mode of failure. This paper, focuses mainly on the ultimate (strength)
limit state which is directly related to the (highest) environmental loading. The partial environmental load
factors contained in the ISO 19902, were calibrated for the Gulf of Mexico and UK's North Sea conditions,
which are relatively harsh than those in Malaysia. The study presents the steps taken for the determination of
the environmental load factor for tubular members of jacket platforms in Malaysia. The factor was determined
such that the reliability of tubular members of jacket designed as per the LRFD-method is at the level of target
reliability obtained by the WSD-method.
Key words: Environmental load factor, reliability analysis, , , , ,
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Cite this Reference:
Nelson J. Cossa, Narayanan S. Potty, Arazi B. Idrus, Mohd Foad Abdul Hamid and Zafarullah Nizamani , . Reliability Analysis of Jacket Platforms in Malaysia-Environmental Load Factors. Research Journal of Applied Sciences, Engineering and Technology, (19): 3544-3551.
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ISSN (Online): 2040-7467
ISSN (Print): 2040-7459 |
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