Detail of GB 12337-2014

Introduction of GB 12337-2014

1 Scope 1.1 This standard specifies the requirements of design (including rule-based and analysis-based, similarly hereinafter), manufacture, assembly welding, inspection and acceptance for steel spherical tanks (hereinafter referred to as "spherical tanks"). 1.2 This standard is applicable to orange-type or hybrid-type column supported spherical tanks with design pressure not greater than 6.4 MPa and design temperature range as per the steel allowable service temperature. 1.3 This standard is not applicable to: a) spherical tanks in nuclear-energy plant; b) spherical tanks subjected to relative movement (e.g. on-board); c) spherical tanks less than 50 m3 in nominal capacity; d) double-decked spherical tanks. 2 Normative References The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. GB 150.1~150.4-2011 Pressure Vessels GB/T 228.1 Metallic Material - Tensile Test - Part 1: Ambient-temperature Test CB/T 229 Metallic Materials - Charpy Pendulum Impact Test Method GB/T 232 Metallic Materials - Bend Test GB/T 699 Quality Carbon Structural Steels GB/T 700 Carbon Structural Steels GB 713 Steel Plates for Boilers and Pressure Vessels GB/T 985.1 Recommended Joint Preparation for Gas Welding Manual Metal Arc Welding Gas-shield Arc Welding and Beam Welding GB/T 985.2 Recommended Joint Preparation for Submerged Arc Welding GB/T 1220 Stainless Steel Bars GB/T 3077 Alloy Structure Steels GB/T 3274 Carbon Structural and Low Alloy Steel - Rolled Plates And Strips GB 3531 Low Alloy Steel Plates for Low Temperature Pressure Vessels GB/T 3965 Methods for Determination of Diffusible Hydrogen in Deposited Metal GB/T 4842 Argon GB/T 6052 Industrial Liquid Carbon Dioxide GB 6479-2000 Seamless Steel Tubes for High-Pressure for Chemical Fertilizer Equipment GB/T 6803 Test Method for Drop-weight Test to Determine Nil-ductility Transition Temperature of Ferritic Steels GB/T 8162 Seamless Steel Tubes for Structural Purposes GB/T 8163 Seamless Steel Tubes for Liquid Service GB 9948 Seamless Steel Tubes for Petroleum Cracking GB/T 12771 Welded Stainless Steel Pipes for Liquid Delivery GB 13296 Seamless Stainless Steel Tubes for Boiler and Heat Exchanger GB/T 14976 Stainless Steel Seamless Tubes for Fluid Transport GB/T 17261 Steel Spherical Tanks Type and Dimension Data Base GB/T 18591 Welding - Guidance on the Measurement of Preheating Temperature - Interpass Temperature and Preheat Maintenance Temperature GB 19189 Quenched and Tempered High Strength Steel Plates for Pressure Vessels GB/T 20878 Stainless and Heat-resisting Steels - Designation and Chemical Composition GB/T 21433 Detecting Susceptibility to Intergranular Corrosion in Stainless Steel Pressure Vessels GB 24511 Stainless Steel Plate, Sheet and Strip for Pressure Equipment GB/T 26929-2011 Terminology for Pressure Vessels GB 50009 Load Code for the Design of Building Structures GB 50011 Code for Seismic Design of Buildings GB 50017 Code for Design of Steel Structures JB/T 4711 Coating and Packing for Pressure Vessels Transport JB/T 4730.1 Nondestructive Testing of Pressure Equipment - Part 1: General Requirements JB/T 4730.2 Nondestructive Testing of Pressure Equipment - Part 2: Radiographic Testing JB/T 4730.3 Nondestructive Testing of Pressure Equipment - Part 3: Ultrasonic Testing JB/T 4730.4 Nondestructive Testing of Pressure Equipment - Part 4: Magnetic Particle Testing JB/T 4730.5 Nondestructive Testing of Pressure Equipment - Part 5: Penetrant Testing JB/T 4730.6 Nondestructive Testing of Pressure Equipment - Part 6: Eddy Current Testing JB 4732-1995 Steel Pressure Vessels - Design by Analysis (Confirmed in 2005) NB/T 47008 Carbon and Alloy Steel Forgings for Pressure Equipment NB/T 47009 Low-alloy Steel Forgings for Low Temperature Pressure Equipment NB/T 47010 Stainless and Heat-resisting Steel Forgings for Pressure Equipment NB/T 47013.10 (JB/T 4730.10) Nondestructive Testing of Pressure Equipment - Part 10: Ultrasonic Time of Flight Diffraction Technique NB/T 47014 (JB/T 4708) Welding Procedure Qualification for Pressure Equipment NB/T 47015 (JB/T 4709) Welding Specification for Pressure Vessels NB/T 47016 (JB/T 4744) Mechanical Property Tests of Products Welded Test Coupons for Pressure Equipment NB/T 47018.1 (JB/T 4747.1) Technical Permission of Welding Materials for Pressure Equipment - Part 1: General Rule NB/T 47018.2 (JB/T 4747.2) Technical Permission of Welding Materials for Pressure Equipment - Part 1: Steel Welding Rod NB/T 47018.3 (JB/T 4747.3) Technical Permission of Welding Materials for Pressure Equipment - Part 3: Steel Electrodes and Rods for Gas-shielded Arc Welding NB/T 47018.4 (JB/T 4747.4) Technical Permission of Welding Materials for Pressure Equipment - Part 4: Electrodes and Fluxes for Submerged Arc Welding TSG R0004-2009 Supervision Regulation on Safety Technology for Stationary Pressure Vessel 3 General Provisions 3.1 General Requirements The design, manufacture, assembly welding, inspection and acceptance of spherical tank shall comply with not only this standard but also GB 150.1~150.4 and JB 4732. 3.2 Management System The units for the design, manufacture, and assembly welding of spherical tank shall develop and effectively implement a sound quality management system. 3.3 Statement of Conformity The design, manufacture, assembly welding of spherical tank within the jurisdiction of TSG R0004 shall undergo the supervision of safety supervision unit for special equipment. This standard conforms to the basic safety requirements specified in the nationally-issued pressure vessel safety codes and the statement of conformity of the standard is as specified in Appendix A. 3.4 Delimitation of Spherical Tank 3.4.1 Connection between spherical tank and external pipe: a) Beveled end of the first girth joint of welded connection; b) The first flange sealing surface of flange connection. 3.4.2 Pressure head, flat cover and fasteners of spherical tank nozzles and manholes 3.4.3 Connection weld joint between non-pressure parts and spherical shell 3.4.4 Non-pressure parts, e.g. column, strut and base plate, directly connected to spherical tank. 3.4.5 Safety attachments: a) The overpressure relief devices of spherical tank shall comply with Appendix B in GB 150.1-2011 or Appendix E in JB 4732-1995. b) Valves and instrumentation of spherical tank shall comply with Appendix B. 3.5 Qualifications and Responsibilities 3.5.1 Qualifications Include: a) Design units of the spherical tank within the jurisdiction of TSG R0004 shall hold a license for design of special equipment (pressure vessel - spherical tank). If analysis-based design is to be performed, they shall hold a license for design of special equipment (pressure vessel - analysis-based design) additionally. b) Manufacturer of the spherical tank within the jurisdiction of TSG R0004 shall hold a license for manufacture of special equipment (pressure vessel - manufacture of spherical shell plate); c) Assembly welding units of the spherical tank within the jurisdiction of TSG R0004 shall hold a license for manufacture of special equipment (pressure vessel - on-site assembly welding of spherical tank). 3.5.2 Responsibilities

Contents of GB 12337-2014

Foreword i Introduction iii 1 Scope 2 Normative References 3 General Provisions 4 Materials 5 Structure 6 Calculation 7 Manufacture 8 Assembly Welding, Inspection and Acceptance Appendix A (Normative) Statement of Conformity and Revision of the Standard Appendix B (Normative) Safety Attachments and Auxiliary Facilities Appendix C (Normative) Risk Assessment Report Appendix D (Normative) Spherical Tank Designed upon Stress Analysis Appendix E (Normative) Low Temperature Spherical Tank Appendix F (Informative) Groove Type and Dimension of Spherical Shell Butt Weld Appendix G (Normative) Classification of Site Type