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Standards for High-Integrity Structures

365游戏平台 is actively involved in committees governing a large number of international standards, including several which apply to high-integrity structures. The insight gained from this participation is shared with Member companies.

High-integrity structures can be considered as those for which the consequences of loss of containment and/or failure would be very severe: pressure vessels and piping, 管道, 起重机, 桥梁, storage tanks and steel-framed buildings to name just a few examples.

设计, 制造, inspection and operation of high-integrity structures are central to the business of many of 365游戏平台’s industrial and professional Members. 因此, 365游戏平台 has long been involved in developing and maintaining the relevant national and international standards on their behalf.

365游戏平台 plays a role in over 120 standards committees 总共, this page focuses on a selected few that are particularly relevant to high-integrity structures.

High-integrity structures standards

BS 7910: 2013 Guide to methods for assessing the acceptability of flaws in metallic structures

This standard is published by BSI in the UK but used worldwide in the design, 制造, operation and analysis of high-integrity plant and structures, especially in the following industry sectors:

  • 石油、天然气和化学品
  • 化石能源和可再生能源
  • 建筑及重型工程.

Failure/damage mechanisms addressed in BS 7910:2013 include fracture, 乏力, 塑料崩溃, 蠕变和一般腐蚀.

BS 7608: 2014 Guide to 乏力 design and assessment of steel products

This standard addresses the design and assessment of steel structures, 通常在焊接条件下, in which 乏力 may initiate at stress-concentrating details such as the weld toe. 与BS 7910相比, which is based on fracture mechanics concepts, BS 7608 assumes that the structure or product is nominally free of flaws.

R6 Assessment of the integrity of structures containing defects, Revision 4

The UK nuclear industry has developed and maintained its own defect assessment procedures (in particular R5 for high-temperature damage and R6 for fracture avoidance) since the 1970s. 365游戏平台是R6小组的成员之一, contributing both via an annual programme of research work relevant to the R6 procedures and through participation in committee processes.

API 579-1/ASME FFS-1, 2007 Fitness-for-service

在美国, API and ASME have developed a fitness-for-service procedure, covering a wide range of failure and damage mechanisms. 365游戏平台 is a member of the committee, contributing via its 北美 office.

API 580/581

API 580 and 581 (Risk-based inspection) allow in-service inspection to be better focused by concentrating on areas of plant in which the probability and/or consequences of failure are highest. 365游戏平台 is represented on this committee.


The French AFCEN RCC-M code provides a design basis for nuclear island components. 365游戏平台’s involvement with the code includes membership of the committee, and leading a UK user group which provides a communication channel between AFCEN and code users.

PD 5500和EN 13445

365游戏平台 is also a member of various committees and sub-committees charged with the development and maintenance of standards/guidance documents for pressure vessels, both in the UK and at European level.


Standards and standards bodies differ enormously in their engagement with end users – for some standards there is a system of code cases or enquiry cases, whilst for others publication is preceded by a Draft for Public Comment (DPC). Finally, there is the option of direct participation in the committee.

365游戏平台 members are free to pursue all of these avenues, they have the additional advantage of being able to communicate directly and in confidence with 365游戏平台 staff who are involved in committees to discuss issues such as:

  • the background to, and interpretation of, certain clauses
  • 修订现行标准
  • 对新标准的需求. 

这些讨论没有, 当然, undermine the role of the relevant standards committee, each of which has its own protocol regarding representation and transparency.