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引言本规范是根据国家劳动总局1981年5月颁发的《压力容器安全监察规程》第78条规定的精神制定的。本规范主要用于在役压力容器的缺陷评定。新制造的压力容器仍按现行JB741执行,特殊情况可由设计、制造、使用三方参照本规范协商解决。本规范系指导性技术文件,解释权属于规范编制组,具体工作由机械部通用机械研究所、化工部化工机械研究院负责。本规范是在大量的试验和理论分析基础上提出的,属于国内二十多个单位三年多来共同研究
Introduction This Code is based on the spirit of Article 78 of the “Pressure Vessel Safety Supervision Regulations” promulgated by the State Administration of Labor in May 1981. This specification is mainly used for in-service pressure vessel defect assessment. The newly manufactured pressure vessel is still under the current JB741 implementation, special circumstances by the design, manufacture, use the three parties refer to the specification negotiation. This specification is the guidance of technical documents, the power of interpretation belongs to the normative group, the specific work by the General Machinery Research Institute of the Ministry of Machinery, Chemical Industry Institute of Chemical Machinery is responsible for. This specification is based on a large number of tests and theoretical analysis proposed, belonging to more than 20 units more than three years of joint research