Even though there have been over 100 FPSO’s operating worldwide, designing and implementing a cost optimal Inspection, Maintenance and Repair (IMR) system for a 20 year service still remains a major challenge. The focus for the IMR is the hull including ballast tanks, cargo tanks and void spaces. Totally the ballast tanks and internal surface may embrace a total service area of 100,000 to 150,000 m2. Therefore, the challenge is to select a cost effective corrosion control design that addresses both the fabrication and operational aspects. This paper describes a probabilistic model for coating degradation and its application for implementing IMR for long time service of an FPSO hull. The model can be utilized as a tool for planning of inspection and maintenance of the corrosion protective coatings and also estimate the associate costs. This enables the operator to model various scenarios for future inspection and maintenance work and thereby select cost optimal solutions for the given FPSO requirements. The paper will also demonstrate the proposed model through a realistic case study.

Subject
Coating repair, Costs, Coating inspection, Protective coatings, Coatings, Recoating, Tools, Coating breakdown, Coating service life, Corrosion protection, Maintenance, Risk reduction, Coating systems
Keywords:
FPSO, corrosion, coatings, maintenance
© 2006 Association for Materials Protection and Performance (AMPP). 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) without the prior written permission of AMPP. Positions and opinions advanced in this work are those of the author(s) and not necessarily those of AMPP. Responsibility for the content of the work lies solely with the author(s).
2006
Association for Materials Protection and Performance (AMPP)
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