当设计方面, 建设, 和操作 fall outside the embedded knowledge of recognized design 和 建设 codes or specifications, 需要另一种方法. im体育APP provides 工程 Critical Assessment (ECA) based on 骨折 mechanics to allow engineers to demonstrate the safety of a structure or a component 和 reduce the probability of failure in engineering structures.

 从设计到施工、运营, im体育APP将工程关键评估技术应用于广泛的焊接结构. 我们的全面整合和先进的咨询, 测试, 分析服务评估塑性坍塌的缺陷容限, 骨折, 和 fatigue damages of safety-critical items in all-welded structures 和 components like pipelines, 压力容器, 钻井平台, 平台, 和 风力涡轮机 哪些暴露在各种具有挑战性的环境和操作条件下. 

通过在评估中纳入进一步的标准, ECA超越了传统的基于公认标准的焊接接头测试. 除其他事项外，考虑到以下事项:

  • 缺陷的属性(大小、位置和方向);
  • The occurring mechanical loads including all cyclic 和 static loads as well as environmental conditions (direction, 强度, 温度)周围的缺陷,
  • 材料性能(韧性、抗拉强度)在缺陷附近.

总体考虑通常会导致比单个缺陷更高的缺陷容忍度. 这将减少花费在不必要的维修上的成本和时间，并有助于防止故障.

 

工程关键评估适用场景

im体育APP的全面集成和先进的咨询, 测试和分析服务支持以下场景:

  • Determine flaw acceptance criteria for welded structures to demonstrate the critical dimensions of a fabrication flaw with which the structure can safely operate.
  • 评估 结构调查 结果并评估检测到的缺陷的严重程度.
  • 对缺陷的检测和评定进行评估, 哪些会危及建筑的完整性.
  • 评估焊接后热处理的必要性 在焊接截面上. 
  • 执行一个 失效分析 调查和评估故障场景的合理性.

 

我们的工程关键评估服务

im体育APP根据若干国际公认的规范和标准提供ECA分析, 如BS7910, DNV-OS-F101, DNVGL-RP-F108, 及API 1104. 这包括:

  • 就测试要求和分析制度提供顾问服务;
  • 动态和准静态 断裂力学测试与分析 在环境和模拟环境条件下，e.g. 氢加载, 腐蚀性介质, 或者低温, 绝大多数国际公认的规范和标准,
  • Material mechanical treatment in small scale straining, full-scale straining, 和 aging treatments, 全尺寸模拟卷管,
  • 疲劳裂纹扩展速率测量与分析;
  • 机械测试在高架和 制冷温度.

 

为非洲经委会提供全面综合服务

im体育APP在材料工程方面的多学科方法和专业知识, 断裂与疲劳分析, 应力分析, 和 无损检测检验 successfully deliver an 工程 Critical Assessment to a variety of internationally recognized codes 和 st和ards. 我们在美国拥有先进的材料测试设备, UK, 欧洲, 和 Middle East Asia Pacific (MEAP) with our fully integrated ECA services to help you define the most cost-effective inspection 和 repair plan for all your projects during design, 安装, 和操作.  

 

海上管道ECA

海上管道焊接, 关键的工程评估可以, 在理论上, 放宽焊缝缺陷验收标准, 尽管情况并非总是如此. 工程 critical assessment takes into account the 安装 和操作al phases of the pipeline, 随着安装方法变得越来越复杂, 操作条件变得更加繁重, 基于工程关键评估 适合服务(FFS)  接受标准有时会更加严格.

im体育APP has a proven track record 和 experience in assessing pipeline 建设 under a variety of 安装 methods 和操作al conditions that pipe-laying activities routinely encounter.

 

im体育APP优势

通过我们深入的数据和分析内的综合服务, 我们确保更可靠的安装和使用条件的建模, enabling you to make informed 和 confident decisions on the most appropriate remedial measures to take. im体育APP的专家可以定制我们的材料测试, 定制的收购, 和分析程序，为您提供能源im体育平台app下载最高质量的数据.

Innovation in engineering critical assessment 测试 和 analysis methods is constant 和 remains an ongoing strategic priority for im体育APP. 一个集成, internationally st和ardized service from our facilities with equal expertise in both the 测试 和 assessment areas provides benefits for data 和 analysis accuracy, speed of delivery while giving increased confidence in the overall integrity of engineering structures.

有关我们ECA服务的更多信息，或要求报价 立即im体育APP.

BS 7910是一个广泛使用的im体育平台app下载标准，以促进ECA分析的性能. im体育APP is represented on the materials properties panel of BS 7910 和 is actively involved in the continuous development of this st和ard. BS 7910 contains a comprehensive philosophy for carrying out ECA analyses for materials subjected to 骨折, 塑性破坏和循环疲劳生长. All the validated formulae used for these assessments are incorporated within the software package Crackwise. 需要注意的是，尽管经过验证, this software is generic 和 therefore does not produce an integrated method to carry out a full ECA.

im体育APP provides an integrated service to perform the 测试 和 analysis in accordance with the various ECA methods outlined in BS 7910.

DNV-OS-F101 is a widely used industry st和ard detailing the ECA approaches 和 测试 regimes required to perform ECA analyses for submarine pipeline systems subjected to several commonly used 安装 和操作al conditions. im体育APP provides an integrated service to perform the 测试 和 analysis in accordance with the various ECA philosophies outlined within DNV-OS-0F101 Appendix A.

DNVGL-RP-F108 is a widely used industry st和ard detailing the approaches 和 测试 regimes required to perform ECA analyses for assessment of flaws in submarine pipelines 和 riser girth welds subjected to a number of commonly used 安装 和操作al conditions. im体育APP provides an integrated service to perform the 测试 和 analysis in accordance with the various ECA philosophies outlined within DNVGL-RP-F108.

im体育APP can identify 和 perform the associated 测试 to enable API 1104 Annex A option 1 和 2  ECA analyses to be performed. These approaches are commonly used for l和 line 安装s subjected to limited fatigue damage. im体育APP also contributes to the ongoing development of the globally recognized international st和ards through the involvement of our 从事专家 in several industry-leading steering groups 和 committees.

常见问题:什么是工程关键评估(ECA)

Our experts can help deepen your knowledge about 工程 Critical Assessment 和 its benefits by answering some of the most frequently asked questions. 

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网络研讨会:如何在能源im体育平台app下载中利用工程关键评估

ECA在很多方面都有应用, 包括改进焊接标准或确保新的或现有资产的适用性. 但是什么是ECA，它可以应用在哪里，它的好处是什么? 我们的点播网络研讨会提供了答案.

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ECA能否减轻执行PWHT的要求?

Post Weld Heat Treatment (PWHT) is applied to relax the residual stresses within welds to reduce the risk of brittle 骨折. The case study looks at how im体育APP’s energy team performed 工程 Critical Assessment (ECA) to avoid PWHT.

 
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