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Keywords: piston rods
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Proceedings Papers

Premature Failure of Riser Tensioner Piston Rods Exposed to Offshore Splash Zone Operation – Status and Review of Critical Multi-Degradation Factors

Christian B. von der Ohe, Roy Johnsen, Nuria Espallargas
...Abstract This paper reviews the experience, development and degradation issues of direct-acting riser tensioning (N-line) cylinder piston rod surfaces. A hydraulic cylinder used in a direct-acting riser tensioning system on board a deepwater drilling vessel operates in the splash zone, thus...
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Proceedings Papers

Guideline for Material Selection and Qualification of Wear and Corrosion Protective Hard Face Coatings for Piston Rods

Odd Haukås-Eide, Kari Lønvik, Karl P. Fischer
... criteria are given in the data sheet. For piston rods operating in a marine environment corrosion and wear testing should be included unless well documented performance under the actual environmental condition can be proven. The acceptance criteria given in Table 4 represent what is to be considered...
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Proceedings Papers

Qualification of Wear and Protective Surface Coating for Hydraulic Piston Rods

Odd Haukås-Eide, Kari Lønvik, Karl Fischer
...Introduction Abstract 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...
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