关于ASMEⅧ-2(2017版)修订内容中新增容器类别的讨论

摘要

ASME Ⅷ-2是国际应用广泛的压力容器设计规范,2017版规范有一系列修订,其中变化最大的是增加了容器类别的概念.围绕修订中新增的"容器类别"的相关内容进行归纳总结,对两类容器在设计应力强度、设计规则和载荷工况、设计制造所需证明文件的区别进行讨论.由于加入了容器分类的概念,对于持U2钢印的单位,部分容器的设计或制造成本降低,但设计时必须严格遵守规范中对于两类容器的相关要求.%ASME Ⅷ-2 is a code for design of pressure vessels widely used in the world.There is a series of revisions in the 2017 edition,among them,the biggest change is the addition of the concept of classes of vessels.This paper summarized the contents related to"classes of vessels"added in the revisions,and discussed the differences between the two classes of vessels in terms of design stress intensity,design rules and load conditions and the supporting documents needed for design and manufacture.Due to the addition of the concept of"classes of vessels",for U2 stamp holders,the design and manufacturing cost of part of their vessels are reduced,but when carrying out design,they must strictly observe relevant requirements for the two classes of vessels in the code.