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GB/T 19624-2019 English PDF

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GB/T 19624-2019: Safety assessment of in-service pressure vessels containing defects
Status: Valid

GB/T 19624: Evolution and historical versions

Standard IDContents [version]USDSTEP2[PDF] delivered inStandard Title (Description)StatusPDF
GB/T 19624-2019English2519 Add to Cart 12 days [Need to translate] Safety assessment of in-service pressure vessels containing defects Valid GB/T 19624-2019
GB/T 19624-2004EnglishRFQ ASK 13 days [Need to translate] Safety assessment for in-service pressure vessels containing defects Obsolete GB/T 19624-2004

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Basic data

Standard ID GB/T 19624-2019 (GB/T19624-2019)
Description (Translated English) Safety assessment of in-service pressure vessels containing defects
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard J74
Classification of International Standard 23.020.30; 13.110
Word Count Estimation 126,162
Date of Issue 2019-06-04
Date of Implementation 2020-01-01
Older Standard (superseded by this standard) GB/T 19624-2004
Quoted Standard GB/T 150.2; GB/T 228.1; GB/T 4161; GB/T 6398; GB/T 21143-2014; JB/T 4732; NB/T 47013.2; GB/T 228.2
Issuing agency(ies) State Administration for Market Regulation, China National Standardization Administration
Summary This standard specifies the terms, definitions and symbols, general principles, fracture and plastic failure assessment, and fatigue failure assessment for the safety assessment of pressure vessels with defects in service. This standard applies to the safety assessment of in-use steel pressure vessels with defects exceeding the standard. Pressure components in boilers, pipes and other metal containers can also be used for reference in safety assessment. This standard applies to the safety assessment of pressure components containing the following types of defects: a) Planar defects: including cracks, lack of fusion, incomplete penetration, undercuts with a depth greater than or equal to 1 mm, etc.; b) Volume defects

GB/T 19624-2019: Safety assessment of in-service pressure vessels containing defects

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Safety assessment of in-service pressure vessel containing defects ICS 23.020.30; 13.110 J74 National Standards of People's Republic of China Replace GB/T 19624-2004 Safety assessment of pressure vessels containing defects Published on.2019-06-04 2020-01-01 implementation State market supervision and administration China National Standardization Administration issued

Content

Foreword I Introduction II 1 Scope 1 2 Normative references 1 3 terms, definitions and symbols 1 4 General 8 5 Fracture and plastic failure assessment 10 6 Fatigue failure assessment 34 Appendix A (informative) Impact of stress corrosion, high temperature creep and corrosion fatigue on safety assessment 43 Appendix B (Normative) Determination and selection of material performance data 45 Appendix C (Normative Appendix) Calculation of Load Ratio Lr Parameters 47 Appendix D (Normative Appendix) Calculation of Stress Intensity Factor KI 54 Appendix E (normative appendix) Interference effect coefficient between defects 80 Appendix F (informative) Analytical assessment method for plane defects 83 Appendix G (Normative Appendix) Safety Assessment Method for Plane Defects of Straight Pipe Sections of Pressure Pipes 98 Appendix H (Normative Appendix) Safety Assessment Method for Volume Defects of Straight Pipe Sections of Pressure Pipes 105 Appendix I (informative) Pressure pipe elbow and three-way volume defect safety assessment method 111 Appendix J (informative) Material fracture toughness alternative value empirical formula 119 Reference 121

Foreword

This standard was drafted in accordance with the rules given in GB/T 1.1-2009. This standard replaces GB/T 19624-2004 "Safety Assessment of Pressure Vessels in Use". Compared with GB/T 19624-2004, the main To change as follows. --- Revised the canonical reference document (see Chapter 2, Chapter 2 of the.2004 edition); --- Revised the primary stress distribution safety factor (see Table 1, Table 5-1 of the.2004 edition); ---Modified welding residual area, high restraint weld area or welding residual stress distribution caused by welding residual stress in unknown areas The value of the secondary stress (see 5.4.2.3.4, 5.4.2.4.4 of the.2004 edition); --- Revised the safety assessment qualification conditions for pit defects and the conditions for exemption from evaluation (see 5.8, 5.8 of.2004 edition); --- Revised the value of the flow stress (see 5.8.4 and H.7,.2004 editions 5.8.4 and H.7); --- Increased inner ring circumferential crack of inner cylinder, semi-elliptical surface axial and circumferential crack, elliptical buried axial or circumferential crack The calculation formula of Lr modifies the calculation formula and applicable range of the long 2a penetration crack Lr on the inner pressure spherical shell, and adds a schematic diagram. (See Appendix C, Appendix C of the.2004 edition); --- Increased inner ring circumferential crack of inner cylinder, semi-elliptical surface axial and circumferential crack, elliptical buried axial or circumferential crack The calculation formula of the 2a penetration crack KI on the inner and inner pressure spherical shells, and the calculation formula of the weld root crack KI in the cross joint is deleted. (See Appendix D, Appendix D of the.2004 edition); --- Increased the impact of corrosion fatigue on safety assessment (see Appendix A); --- Modified the method for determining the load ratio LFr during crack initiation (see G.4.2.2, G.4.2.2 of.2004); --- Revised the formula for calculating the plastic limit internal pressure of a dimensionless defective pipe under pure internal pressure (see H.11.1,.2004 edition) H.11.1); --- Increased safety assessment methods for pressure pipe elbows and three-way volume defects (see Appendix I); --- Increased empirical formula for material fracture toughness substitution (see Appendix J). This standard is proposed and managed by the National Boiler and Pressure Vessel Standardization Technical Committee (SAC/TC262). This standard was drafted. China Special Equipment Inspection and Research Institute, Hefei General Machinery Research Institute Co., Ltd., National Market Supervision and Management Bureau of Special Equipment Safety Supervision, Beijing University of Aeronautics and Astronautics, East China University of Science and Technology, Nanjing University of Technology, Zhejiang University of Technology, Tsinghua University. The main drafters of this standard. Xie Tiejun, Chen Xuedong, Sun Liang, Jia Guodong, Zhang Wei, Xuan Fuzhen, Zhao Jianping, Gao Zengliang, Fan Zhichao, Shao Shanshan, Liu Changjun, Liu Yinghua, Wang Hui, Dong Jie, Xie Guoshan, Han Zhiyuan, Cao Lijun, Wang Bing, Wang Xiaomei. The previous versions of the standards replaced by this standard are. ---GB/T 19624-2004.

Introduction

In order to adapt to the relevant national laws and regulations regarding the use of defective pressure vessels, pressure piping safety assessment requirements and engineering needs, I The country has successively launched the "Seventh Five-Year Plan" key scientific and technological projects "Research on the safety assessment of defective pressure vessels" and the "Eighth Five-Year Plan" national key research project "in service" Research on Safety Assessment and Explosion Prevention Technology of Boiler and Pressure Vessels and National Key Science and Technology Research Projects in the Ninth Five-Year Plan Evaluation and important pressure vessel life prediction technology research, based on these research work, formed in.2004 GB/T 19624- 2004 "Safety Assessment of Pressure Vessels in Use". The standard is based on the principle of “combined use” and “weakest ring” and is used to identify defects in use. Whether the pressure vessel can continue to be used safely under the specified conditions of use. The main drafting units and personnel of GB/T 19624-2004 are. National Special Equipment Testing and Research Center Chen Gang, Li Xueren, Zuo Shangzhi, Sun Liang, Tao Xuerong, Jia Guodong; Zhong Qunpeng, Beijing University of Aeronautics and Astronautics Tian Yongjiang; Li Peining and Wang Zhiwen of East China University of Science and Technology; Yu Shouwen and Dong Yamin of Tsinghua University; Chen Xuedong and Zhang Liquan of Hefei General Machinery Research Institute, He Zhiren, Wang Bing; Shoubi Nan of China Petrochemical Economic and Technological Research Institute; Zhang Kangda of Zhejiang University of Technology; Qin Hong of Dalian University of Technology; Chinese General Stone Xiao Yougu, a mechanical engineering company; Wang Kuanfu, Zhejiang University; and Shen Shiming, Nanjing University of Technology. In order to solve the problems in the implementation of the standard, the “10th Five-Year Plan” of national key scientific and technological research projects was launched. Research on key technologies for safety protection of special pressure equipment in the industry", "National Five-Year" National Science and Technology Support Project "Large high-parameter high-risk complete sets Research on Key Technologies of Long-term Operation Safety Guarantee", Quality Inspection Public Welfare Project "Research on Pressure-bearing Equipment Based on Damage Mode And the application of research and other work, combined with the development of relevant international technology, completed the revision of GB/T 19624-2004. Safety assessment of pressure vessels containing defects

1 Scope

This standard specifies the terms, definitions and symbols for the safety assessment of pressure vessels containing defects, general theory, fracture and plastic failure assessment, fatigue Failure assessment. This standard is applicable to the safety assessment of steel pressure vessels containing excessive defects. Boilers, pipes and other containers made of metal materials The pressure-receiving element can also be used for reference when performing safety assessment. This standard applies to the safety assessment of pressure components with the following types of defects. a) Plane defects. including cracks, unfused, incomplete penetration, undercuts with a depth greater than or equal to 1 mm; b) Volume defects. including pits, pores, slag inclusions, undercuts with a depth of less than 1 mm. This standard does not apply to the following pressure vessels and structures. a) pressure vessels and structures subjected to nuclear radiation in nuclear energy installations; b) non-independent pressure-bearing components on the machine (eg compressors, generators, pumps, pressurized casings or cylinders of diesel engines, etc.); c) pressurized components subjected to direct fire; d) Capacitive pressure vessels (closed appliances) for enclosed electrical equipment for the power industry; e) Potential failure modes include creeping pressure vessels and structures.

2 Normative references

The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this article. Pieces. For undated references, the latest edition (including all amendments) applies to this document. GB/T 150.2 Pressure Vessels Part 2. Materials GB/T 228 (all parts) tensile test of metallic materials GB/T 4161 Metallic material plane strain fracture toughness KIC test method GB/T 6398 metal material fatigue test fatigue crack propagation method GB/T 21143-2014 Unified test method for quasi-static fracture toughness of metallic materials JB/T 4732 Steel Pressure Vessel Analysis Design Standard NB/T 47013.2 Non-destructive testing of pressure equipment - Part 2. Radiographic testing 3 terms, definitions and symbols 3.1 Terms and definitions The following terms and definitions apply to this document. 3.1.1 Excess defect defectexceedingstandard Defects exceeding the allowable dimensions specified in the pressure vessel manufacturing or acceptance regulations and standards. 3.1.2 Fracture assessment fractureassessment The fracture mechanics method is used to evaluate whether the fault-containing pressure vessel and structure can eliminate the safety assessment of fracture failure.

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