Polyamide, particularly PA11, has been used in flexible pipes for number of years, and has demonstrated an excellent behavior for containment layer application because of its good mechanical properties. However, Polyamides are subjected to hydrolysis, a phenomenon accelerated by elevated temperatures and the acidity of the fluid. Polyamides can thus be used in a temperature domain which must be consistent with the level of ageing acceptable for flexible pipe applications (static or dynamic). The methodology to calculate PA11 life time is dependent on the temperature, acidity and the application detailed in API 17TR2. For several years, Technip has been working on the development and the qualification of a new polyamide with enhanced hydrolysis resistance. Therefore, a full qualification program including tests recommended by API 17 J, extrusion process validation and full-scale dynamic tests, has been performed. Moreover, in line with API 17 TR2, hydrolysis curves have been designed from a full set of ageing test results. These curves show that this new PA can be used at higher temperatures than those presented in the API. Technip has now completed qualification of this new High Performance Polyamide (HPPA) for the inner sealing layer in applications where the conveyed fluid is hot (up to 90°C) and contains a significant water cut during the whole life of the flexible pipe.
Skip Nav Destination
ASME 2012 31st International Conference on Ocean, Offshore and Arctic Engineering
July 1–6, 2012
Rio de Janeiro, Brazil
Conference Sponsors:
- Ocean, Offshore and Arctic Engineering Division
ISBN:
978-0-7918-4490-8
PROCEEDINGS PAPER
New Polyamide With Improved Hydrolysis Resistance Available to Purchase
S. Chicheportiche,
S. Chicheportiche
Technip, Le Trait, France
Search for other works by this author on:
A. Coutarel
A. Coutarel
Technip, Le Trait, France
Search for other works by this author on:
A. T. Do
Technip, Le Trait, France
S. Chicheportiche
Technip, Le Trait, France
C. Chollet
Technip, Le Trait, France
A. Coutarel
Technip, Le Trait, France
Paper No:
OMAE2012-83157, pp. 145-151; 7 pages
Published Online:
August 23, 2013
Citation
Do, AT, Chicheportiche, S, Chollet, C, & Coutarel, A. "New Polyamide With Improved Hydrolysis Resistance." Proceedings of the ASME 2012 31st International Conference on Ocean, Offshore and Arctic Engineering. Volume 3: Pipeline and Riser Technology. Rio de Janeiro, Brazil. July 1–6, 2012. pp. 145-151. ASME. https://doi.org/10.1115/OMAE2012-83157
Download citation file:
21
Views
Related Proceedings Papers
Related Articles
Mechanical Properties of Roll Extruded Nuclear Reactor Piping
J. Pressure Vessel Technol (May,1976)
Debinding and Presintering of High Aspect Ratio Microbi-Lumen Tubes Produced by Extrusion of 17-4PH Feedstock
J. Micro Nano-Manuf (June,2020)
Room-Temperature Single-Step Production of Ultrafine-Grained Bulk Metallic Sheets From Al Powder
J. Manuf. Sci. Eng (October,2023)
Related Chapters
Introduction
History of Line Pipe Manufacturing in North America
Siphon Seals and Water Legs
Hydraulics, Pipe Flow, Industrial HVAC & Utility Systems: Mister Mech Mentor, Vol. 1
Pressure Testing
Process Piping: The Complete Guide to ASME B31.3, Third Edition