Hydraulic riser tensioning systems on offshore drilling platforms are exposed to severe operating and corrosive conditions. Without the hydraulic riser tensioning system, drilling operations can not be performed. This hydraulic system, which includes the piston rod, is a vital element on a drilling platform. The piston rod and the surface coating material in the hydraulic system must have adequate wear and corrosion resistance. A qualification of piston rod material is it must embrace both the aspects of the environmental impact as well as operation requirements. Today there are no international standards and acceptance criteria for qualifying piston rod materials for use in hydraulic materials. This paper presents and discusses a tentative approach to establishing a guideline for qualification of wear and corrosion protective surface coating materials for offshore application of piston rods in hydraulic systems.

Subject
Wear, Test methods, Protective coatings, Coatings, Materials, Substrates, Rods, Seawater, Porosity, Mechanical failure, Hydraulic equipment, Corrosion protection, Corrosion resistance
Keywords:
Hydraulic systems, piston rods, metallic coatings, corrosion and wear
© 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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