Environmental Load Factors and System Strength Evaluation of Offshore Jacket Platforms
This book presents a study for the determination of environmental load factors for Jacket Platforms in Malaysia and a methodology to determine the life extension of aging platforms. The simplified methods described here could be used for determining not o
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Zafarullah Nizamani
Environmental Load Factors and System Strength Evaluation of Offshore Jacket Platforms
Ocean Engineering & Oceanography Volume 4
Series editors Manhar R. Dhanak, Florida Atlantic University SeaTech, Dania Beach, USA Nikolas I. Xiros, New Orleans, USA
More information about this series at http://www.springer.com/series/10524
Zafarullah Nizamani
Environmental Load Factors and System Strength Evaluation of Offshore Jacket Platforms
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Zafarullah Nizamani Department of Environmental Engineering Jalan University Kampar Malaysia
ISSN 2194-6396 ISSN 2194-640X (electronic) Ocean Engineering & Oceanography ISBN 978-3-319-15050-5 ISBN 978-3-319-15051-2 (eBook) DOI 10.1007/978-3-319-15051-2 Library of Congress Control Number: 2014959854 Springer Cham Heidelberg New York Dordrecht London © Springer International Publishing Switzerland 2015 This work is subject to copyright. All rights are reserved by the Publisher, whether the whole or part of the material is concerned, specifically the rights of translation, reprinting, reuse of illustrations, recitation, broadcasting, reproduction on microfilms or in any other physical way, and transmission or information storage and retrieval, electronic adaptation, computer software, or by similar or dissimilar methodology now known or hereafter developed. The use of general descriptive names, registered names, trademarks, service marks, etc. in this publication does not imply, even in the absence of a specific statement, that such names are exempt from the relevant protective laws and regulations and therefore free for general use. The publisher, the authors and the editors are safe to assume that the advice and information in this book are believed to be true and accurate at the date of publication. Neither the publisher nor the authors or the editors give a warranty, express or implied, with respect to the material contained herein or for any errors or omissions that may have been made. Printed on acid-free paper Springer International Publishing AG Switzerland is part of Springer Science+Business Media (www.springer.com)
For my family Mother, Father, Jamila and Shahzad
Preface
API (WSD) and ISO 19902 (LRFD) codes are being used nowadays for design of Jacket platforms all over the world. ISO code is a probabilistic code which takes into account the uncertainties of material and loads and thus enables economised designs. This advantage is not available for API code. The sustainable development of physical structures depend not only on reliability of structures but also on cost saving. ISO load factors are calibrated using Gulf of Mexico and North Sea environmental data. In this book, three offshore regions of Malaysia have been taken separately. The probabilistic uncertainty models for resistance and loads for local conditions are determined. Resistance uncertainty is evaluated using data collected from fabrication yard in Malaysia. Geometrical and material variations are statistically analysed from this data using probability distributions. Unce
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