Qualification of Local Stress Relief Heat Treatment of Double Submerged-Arc Welded DSAW Pipe for Reel-Lay Installation

J. Terris, J. Safari
{"title":"Qualification of Local Stress Relief Heat Treatment of Double Submerged-Arc Welded DSAW Pipe for Reel-Lay Installation","authors":"J. Terris, J. Safari","doi":"10.4043/31204-ms","DOIUrl":null,"url":null,"abstract":"\n Reel-lay installation is one of the most effective methods for subsea pipeline installation. Pipes subject to reeling installation experience cyclic plastic deformations and tight control of the yield strength range, yield strength to ultimate tensile strength ratio (YS/UTS) and uniform elongation values is required on the delivered pipe.\n Double Submerged-Arc Weld (DSAW) pipes formed from Thermo-Mechanically Controlled Process (TMCP) plates do not normally exhibit the minimum requirements for plastic strain requirements such as minimum YS/UTS ratio or uniform elongation values. This paper describes a process for increasing the reelability of DSAW pipes. This has been achieved by induction heating of DSAW pipe ends to normalise the mechanical properties at pipe joints. The mechanical properties of the treated section have been measured and verified against design rules for reeling, based on industry standards such as DNVGL-ST-F101 [Ref. 1] and TechnipFMC supplementary requirements. The improvement in mechanical properties is measured by comparison with the as-manufactured properties of adjacent sections.\n A commercial study demonstrates that the locally heat-treated DSAW pipe is a cost-effective alternative to seamless pipes for reel-lay installation.","PeriodicalId":10936,"journal":{"name":"Day 2 Tue, August 17, 2021","volume":"57 1","pages":""},"PeriodicalIF":0.0000,"publicationDate":"2021-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Day 2 Tue, August 17, 2021","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.4043/31204-ms","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0

Abstract

Reel-lay installation is one of the most effective methods for subsea pipeline installation. Pipes subject to reeling installation experience cyclic plastic deformations and tight control of the yield strength range, yield strength to ultimate tensile strength ratio (YS/UTS) and uniform elongation values is required on the delivered pipe. Double Submerged-Arc Weld (DSAW) pipes formed from Thermo-Mechanically Controlled Process (TMCP) plates do not normally exhibit the minimum requirements for plastic strain requirements such as minimum YS/UTS ratio or uniform elongation values. This paper describes a process for increasing the reelability of DSAW pipes. This has been achieved by induction heating of DSAW pipe ends to normalise the mechanical properties at pipe joints. The mechanical properties of the treated section have been measured and verified against design rules for reeling, based on industry standards such as DNVGL-ST-F101 [Ref. 1] and TechnipFMC supplementary requirements. The improvement in mechanical properties is measured by comparison with the as-manufactured properties of adjacent sections. A commercial study demonstrates that the locally heat-treated DSAW pipe is a cost-effective alternative to seamless pipes for reel-lay installation.
卷装双埋弧焊DSAW管局部去应力热处理鉴定
卷绕式安装是海底管道安装最有效的方法之一。需要卷绕安装的管道经历循环塑性变形,并严格控制屈服强度范围、屈服强度与极限拉伸强度比(YS/UTS)和交付管道的均匀伸长率值。由热机械控制工艺(TMCP)板形成的双埋弧焊(DSAW)管通常不符合塑料应变要求的最低要求,如最小YS/UTS比或均匀伸长率值。本文介绍了一种提高DSAW管道可靠性的工艺。这是通过对DSAW管端进行感应加热来实现的,以规范管道接头的机械性能。根据行业标准,如DNVGL-ST-F101 [Ref. 1]和TechnipFMC补充要求,对处理后截面的机械性能进行了测量和验证。力学性能的改善是通过与相邻部分的制造性能进行比较来衡量的。一项商业研究表明,局部热处理的DSAW管是一种具有成本效益的替代无缝管的卷轴铺设安装。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
求助全文
约1分钟内获得全文 求助全文
来源期刊
自引率
0.00%
发文量
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享
0
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术官方微信