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98707 FIELD EXPERIENCE WITH STAINLESS STEEL MATERIALS IN SEAWATER SYSTEMS.

Picture for 98707 FIELD EXPERIENCE WITH STAINLESS STEEL
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Product Number: 51300-98707-SG
ISBN: 98707 1998 CP
Author: Oystein Strandmyr, Odd Hagerup
Industry: Materials Selection and Design
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Stainless steels are an important group of materials for seawater systems. This group of materials, including high alloyed austenitic and superduplex type materials, was primarily introduced with the aim to reduce maintenance costs involved with materials as carbon steel with internal linings and coatings. However, on some offshore platforms the leak frequency in seawater stainless steel piping systems has been high resulting in unacceptable maintenance costs. This study has evaluated the field experience with stainless steel materials in seawater systems at three company operated offshore platforms in the North Sea area. Variables as specifications, qualification test criteria, quality and operating conditions have been evaluated. In addition, actual material samples from the involved field installations have been tested for corrosion resistance and have been metallographically examined. The findings from this study will be further evaluated for implementation both in material standards and in quality control strategies for deliveries and installation of high alloyed stainless steels for new projects. Keywords: Seawater systems, Stainless steels, Crevice corrosion, Material selection, Material qualification tests, Quality control.
Stainless steels are an important group of materials for seawater systems. This group of materials, including high alloyed austenitic and superduplex type materials, was primarily introduced with the aim to reduce maintenance costs involved with materials as carbon steel with internal linings and coatings. However, on some offshore platforms the leak frequency in seawater stainless steel piping systems has been high resulting in unacceptable maintenance costs. This study has evaluated the field experience with stainless steel materials in seawater systems at three company operated offshore platforms in the North Sea area. Variables as specifications, qualification test criteria, quality and operating conditions have been evaluated. In addition, actual material samples from the involved field installations have been tested for corrosion resistance and have been metallographically examined. The findings from this study will be further evaluated for implementation both in material standards and in quality control strategies for deliveries and installation of high alloyed stainless steels for new projects. Keywords: Seawater systems, Stainless steels, Crevice corrosion, Material selection, Material qualification tests, Quality control.
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Picture for 11351 The Corrosion of Superduplex Stainless Steel in Different Types of Seawater
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11351 The Corrosion of Superduplex Stainless Steel in Different Types of Seawater

Product Number: 51300-11351-SG
ISBN: 2011 11351 CP
Author: R Francis, G Byrne and G Warburton
Publication Date: 2011
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Superduplex stainless steels have been used in seawater systems since 1986 as castings and since 1990 as wrought product. The present paper describes some of the service environments commonly in use and the conditions that give rise to specific operating potentials. The limits of use under these conditions are described utilizing both laboratory and service experience.
Picture for 03255 EXPERIENCES WITH SUPERDUPLEX STAINLESS
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03255 EXPERIENCES WITH SUPERDUPLEX STAINLESS STEEL IN SEAWATER

Product Number: 51300-03255-SG
ISBN: 03255 2003 CP
Author: R FRANCIS, G BYRNE
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Picture for The Selection of Stainless Steels for Seawater Pumps
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The Selection of Stainless Steels for Seawater Pumps

Product Number: 51315-5446-SG
ISBN: 5446 2015 CP
Author: Roger Francis
Publication Date: 2015
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Available cast austenitic and duplex stainless steel grades and their castability and corrosion resistance. The conclusion is that superduplex stainless steel offers the best combination of properties for seawater cooling and firewater pumps.

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