首页> 外文会议>ASME Pressure Vessels and Piping Conference >TECHNICAL BASIS FOR PROPOSED FIFTH REVISION TO ASME CODE CASE N-513
【24h】

TECHNICAL BASIS FOR PROPOSED FIFTH REVISION TO ASME CODE CASE N-513

机译:技术基础,为ASME代码案例N-513的第五修订版

获取原文

摘要

Code Case N-513 provides evaluation rules and criteria for temporary acceptance of flaws, including through-wall flaws, in moderate energy piping. The application of the Code Case is restricted to moderate energy, Class 2 and 3 systems, so that safety issues regarding short-term, degraded system operation are minimized. The first version of the Code Case was published in 1997. Since then, there have been four revisions to augment and clarify the evaluation requirements and acceptance criteria of the Code Case that have been published by ASME. The technical bases for the original version of the Code Case and the four revisions have been previously published [1, 2, and 3]. There is currently work underway to incorporate additional changes to the Code Case and this paper provides the technical basis for the changes proposed in a fifth revision. These changes include clarification for buried piping, investigation of various radii used in the Code Case, removal of the 0.1 limit on the flexibility characteristic for elbow flaw evaluation, and an update of the stress intensity factor parameters for circumferential through-wall flaws. In addition, a new flaw evaluation procedure is given for through-wall flaws in gate valve body ends. This procedure evaluates flaws in the end of the valve body as if in straight pipe. These changes and their technical bases are described in this paper. Clarifications and changes deemed editorial are not documented in this paper.
机译:代码案例N-513提供适用于适度的能量管道的临时接受缺陷的评估规则和标准,包括穿孔漏洞。代码案件的应用仅限于中等能量,2级和3个系统,因此最小化了关于短期降级的系统操作的安全问题。守则案件的第一个版本于1997年发布。从那时起,已经有四次修订并澄清了ASME发布的守则案件的评估要求和验收标准。原始版本的代码案例和四个修订的技术基础已经发布[1,2和3]。目前正在进行工作来将额外的更改纳入代码案件,本文为第五修订中提出的更改提供了技术基础。这些变化包括掩埋管道的澄清,对代码箱中使用的各种半径的调查,除去0.1限制对肘漏气评估的灵活特性,以及用于圆周通壁漏洞的应力强度因子参数的更新。此外,给出了闸阀主体端部的通壁缺陷的新漏洞评估程序。该程序评估阀体末端的瑕疵,好像在直管中。本文描述了这些变化及其技术碱基。在本文中未被视为编辑的澄清和变更。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号