Menu
Search
Filters
Close
Menu

51318-11719-Investigation and case study of composite repair performance at low temperatures on buried pipelines

Picture for Investigation and case study of composite repair performance at low temperatures on buried pipelines
Available for download

Impact of exposure to a low temperature environment below -30oC (-22oF) was investigated on a carbon fiber and epoxy composite repair system that had previously been qualified to the ASME(1) PCC-21 Article 4.1 nonmetallic repair standard.

Product Number: 51318-11719-SG
Author: Tim Mally / Eric Locke / Mahdi Kiani / Roger Walker
Publication Date: 2018
Industry: Pipelines, Tanks, and Underground Systems
$0.00
$20.00
$20.00

Composite repair systems composed of carbon fiber/epoxy composite materials can be affected by exposure to harsh environments. The vast majority of testing on composite repair systems to date has been to investigate the effects of high temperatures on composite performance. However, depending on the location and time of year, low temperatures can also play a big role in the performance of coatings and composite repairs on pipelines. Therefore, the effects of low temperature should also be tested to prove the reliability of the composite repair systems in low temperature environments. In response to this concern, the impact of exposure to a low temperature environment below -30oC (-22oF) was investigated on a carbon fiber and epoxy composite repair system that had previously been qualified to the ASME(1) PCC-21 Article 4.1 nonmetallic repair standard. Tensile tests were performed in accordance with ASTM(2) D30392, and 5 J impact and burst tests were performed in accordance with ASME PCC-21 Article 4.1 at temperatures below -30oC (-22oF). Based on the results of the testing, it can be concluded that the specific composite repair system can be employed for low temperature applications on buried pipelines and that there is no degradation in the repair system performance. To prove that the results of the testing apply to the field, the composite repair systems were successfully applied to buried transmission pipelines in cold temperatures, the details of which will be presented.

Key words: Pipeline integrity, composite repair, composite wrap, carbon fiber, epoxy, low temperature, cold environments, anomaly repairs

Composite repair systems composed of carbon fiber/epoxy composite materials can be affected by exposure to harsh environments. The vast majority of testing on composite repair systems to date has been to investigate the effects of high temperatures on composite performance. However, depending on the location and time of year, low temperatures can also play a big role in the performance of coatings and composite repairs on pipelines. Therefore, the effects of low temperature should also be tested to prove the reliability of the composite repair systems in low temperature environments. In response to this concern, the impact of exposure to a low temperature environment below -30oC (-22oF) was investigated on a carbon fiber and epoxy composite repair system that had previously been qualified to the ASME(1) PCC-21 Article 4.1 nonmetallic repair standard. Tensile tests were performed in accordance with ASTM(2) D30392, and 5 J impact and burst tests were performed in accordance with ASME PCC-21 Article 4.1 at temperatures below -30oC (-22oF). Based on the results of the testing, it can be concluded that the specific composite repair system can be employed for low temperature applications on buried pipelines and that there is no degradation in the repair system performance. To prove that the results of the testing apply to the field, the composite repair systems were successfully applied to buried transmission pipelines in cold temperatures, the details of which will be presented.

Key words: Pipeline integrity, composite repair, composite wrap, carbon fiber, epoxy, low temperature, cold environments, anomaly repairs

Product tags
Also Purchased
Picture for Testing and Design of Nonmetallic Composite Repair Systems for Pipeline Intergity
Available for download

51317--9506-Testing and Design of Nonmetallic Composite Repair Systems for Pipeline Intergity

Product Number: 51317--9506-SG
ISBN: 9506 2017 CP
Author: Davie Peguero
Publication Date: 2017
$20.00

Pressure cycling and ultimate failure pressure testing was conducted on various pipe samples to verify the design formulas meet the specifications and are correct for use in design of field repairs. Results show that use of strain-based design methodologies for composite repair systems is suitable and effective.
Picture for Considerations for Repairing Live Piping Using Engineered Composite Repair Systems
Available for download

51317--9494-Considerations for Repairing Live Piping Using Engineered Composite Repair Systems

Product Number: 51317--9494-SG
ISBN: 9494 2017 CP
Author: Matt Green
Publication Date: 2017
$20.00

Composite materials are being widely implemented for repair scenarios within refineries – domestically and around the world. This paper will discuss concerns, considerations, and needs typically encountered when using Engineered Composite Repair systems to repair live, operating piping systems in a plant environment.
Picture for Factors which Affect the Performance of Composite Repair Systems
Available for download

51316-7562-Factors which Affect the Performance of Composite Repair Systems

Product Number: 51316-7562-SG
ISBN: 7562 2016 CP
Author: Davie Peguero
Publication Date: 2016
$20.00
Categories
Industry
Recently viewed
Popular tags
View all

Association for Materials Protection and Performance

© AMPP All Rights Reserved.
Membership Terms of Content Use
Contact Customer Support