Underwater Inspection and Repair for Offshore Structures
John V. Sharp
Cranfield University Cranfield UK
Gerhard Ersdal
University of Stavanger Stavanger Norway
This edition first published 2021
© 2021 by John Wiley & Sons Ltd
All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted, in any form or by any means, electronic, mechanical, photocopying, recording or otherwise, except as permitted by law. Advice on how to obtain permission to reuse material from this title is available at http://www.wiley.com/go/permissions.
The right of John V. Sharp and Gerhard Ersdal to be identified as the authors of this work has been asserted in accordance with law.
Registered Offices John Wiley & Sons, Inc., 111 River Street, Hoboken, NJ 07030, USA John Wiley & Sons Ltd, The Atrium, Southern Gate, Chichester,West Sussex, PO19 8SQ, UK
Editorial Office The Atrium, Southern Gate, Chichester,West Sussex, PO19 8SQ, UK
For details of our global editorial offices, customer services, and more information about Wiley products visit us at www.wiley.com.
Wiley also publishes its books in a variety of electronic formats and by print‐on‐demand. Some content that appears in standard print versions of this book may not be available in other formats.
Limit of Liability/Disclaimer of Warranty While the publisher and authors have used their best efforts in preparing this work, they make no representations or warranties with respect to the accuracy or completeness of the contents of this work and specifically disclaim all warranties, including without limitation any implied warranties of merchantability or fitness for a particular purpose. No warranty may be created or extended by sales representatives, written sales materials or promotional statements for this work. The fact that an organization, website, or product is referred to in this work as a citation and/or potential source of further information does not mean that the publisher and authors endorse the information or services the organization, website, or product may provide or recommendations it may make. This work is sold with the understanding that the publisher is not engaged in rendering professional services. The advice and strategies contained herein may not be suitable for your situation. You should consult with a specialist where appropriate. Further, readers should be aware that websites listed in this work may have changed or disappeared between when this work was written and when it is read. Neither the publisher nor authors shall be liable for any loss of profit or any other commercial damages, including but not limited to special, incidental, consequential, or other damages.
Library of Congress Cataloging‐in‐Publication Data
Names: Sharp, John V., 1936‐ author. | Ersdal, Gerhard, 1966– author.
Title: Underwater inspection and repair for offshore structures / John V. Sharp and Gerhard Ersdal.
Description: First edition. | Hoboken, NJ : Wiley, 2021. | Includes bibliographical references and index.
Identifiers: LCCN 2020042682 (print) | LCCN 2020042683 (ebook) | ISBN 9781119633792 (cloth) | ISBN 9781119633822 (adobe pdf) | ISBN 9781119633815 (epub)
Subjects: LCSH: Offshore structures–Inspection. | Offshore structures–Maintenance and repair.
Classification: LCC TC180 .S46 2021 (print) | LCC TC180 (ebook) | DDC 627/.980288–dc23
LC record available at https://lccn.loc.gov/2020042682 LC ebook record available at https://lccn.loc.gov/2020042683
Cover Design: Wiley
Cover Images: Underwater and above water © SEAN GLADWELL /Getty Images, Oil and gas platform with offshore vessel transporting cargo © Danial_Abdullah / Getty Images, U.S. Navy Diver © Stocktrek Images / Getty Images, A diver inspecting airplane parts in the hold of the Japanese aircraft transport, Fujikawa Maru © A Cotton Photo / Shutterstock, 3d Rendering of a Subsea ROV Inspecting the Seabed © Vismar UK / Shutterstock
Preface
All structures deteriorate and experience damage with time, particularly due to fatigue cracking, corrosion and damage from extreme and accidental events. This requires inspections, monitoring and appropriate repair of these structures to be performed to avoid an unsafe condition. Significant research and development work have been undertaken related to typical damage types, inspection and monitoring methods, evaluation of damage, and the need and methods for repair. This book aims at giving the reader an overview of this research and development work in addition to providing current practice in these areas, both to inform the reader about the existence of this work and to avoid unnecessary repetition of research and development.
Since early 1980 the first author of this book, John V. Sharp, has been active in the majority of these research programmes through his role initially in managing the relevant UK Department of Energy research work and later as Head of Offshore Research for the UK HSE. Since early 2000 the second author, Gerhard Ersdal, has had similar roles in managing several research programmes funded by the Norwegian Petroleum Safety Authority. Both authors have specific relevant expertise and have published a number of papers on inspection and repair of offshore structures and both are now actively involved in these areas at the universities of Cranfield and Stavanger, respectively, as Visiting (part‐time) Professors.
The authors have had the benefit of working closely with John Wintle, Visiting Professor at the University of Strathclyde and Consultant Engineer at TWI, in preparing this book and his contributions have made significant improvements to the final text.
This book has mainly been written by using online web‐conferencing and in its later stages this has been forced upon us because of the Covid‐19 lockdown in the UK, Norway and many other parts of the world.
The opinions expressed in this book are those of the authors, and they should not be construed as reflecting the views of the organisations the authors represent. Further, the text in this book should not be viewed as recommended practice but rather as an overview of important issues that are involved in the management of inspection and repair.
The authors would particularly like to thank Mostafa Atteya, Eirik Duesten and Rolf Hanson for carefully reviewing the document and providing many valuable comments. We also want to thank Mick Else and Fu Wu for their efforts in enabling copyrights for essential illustrations. Further, the authors would like to thank Stinger (stinger.com), OceanTech (oceantech.com), BSEE, KBR Energo, Fugro and Atkins (MSL) for allowing us to use their illustrations and Magnus Gabriel Ersdal for drafting some of the figures and valuable input on artificial intelligence and machine learning. The authors would also like to thank the helpful and patient staff at Wiley.
Microsoft Teams, East Hendred, Oxfordshire