Power Piping
ASME CodeforPressurePiping B31
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CONTENTS
Foreword ixIntroduction
Committee Roster. xCorrespondence With the B31 Committee xiv xiSummary of Changes xviChapter1100 General 1 1Chapter II Design.. 18Part 1 101 Design Conditions Conditions and Criteria. 18 18102 Design Criteria 20Part 2 103 Pressure Design of Piping Components Criteria for Pressure Design of Piping Components 26 26104 Pressure Design of Components 26Part 3 105 Selection and Limitations of Piping Components 41 41106 Fittings Bends and Intersections 41107 Valves.. 42Part 4 108 Pipe Flanges Blanks Flange Facings Gaskets and Bolting Selection and Limitations of Piping Joints . 43 44110 Piping Joints . 44111 112 Flanged Joints Welded Joints 45113 Expanded or Rolled Joints . 45114 Flared Flareless and Compression Joints and Unions Threaded Joints . 45 49115 116 Bell End Joints . 49117 Brazed and Soldered Joints 50Part 5 118 Expansion Flexibility and Pipe-Supporting Elements Sleeve Coupled and Other Proprietary Joints 50 50119 Expansion and Flexibility 50120 121 Design of Pipe-Supporting Elements Loads on Pipe-Supporting Elements . 53 53Part 6 Systems.... 57Chapter II 122 Design Requirements Pertaining to Specific Piping Systems . Materials .... 57 72123 General Requirements 72124 Limitations on Materials 74
125 Creep Strength Enhanced Ferritic Materials . . 76Chapter IV 126 Reference Specifications Codes and Standards Specifications and Standards for Standard and Nonstandard Piping Components . . .- Chapter V Fabrication Assembly and Erection...... 87127 128 Brazing and Soldering -. 101 87129 Bending and Forming - - 102130 131 Requirements for Fabricating and Attaching Pipe Supports . .....* Welding Preheat 104 104132 Postweld Heat Treatment 106133 Stamping - 112Chapter VI 135 Inspection Examination and Testing ... Assembly 112 115136 Inspection and Examination . . 115Chapter VII 137 Pressure Tests.... Operation and Maintenance ........ 120 124138 124139 140 Condition Assessment of CPS Operation and Maintenance Procedures . 124 124141 CPS Records 125142 Piping and Pipe-Support Maintenance Program and Personnel Requirements . - 126143 144 CPS Walkdowns . Repair of CPS . 126 126145 Material Degradation Mechanisms 126146 149 Dynamic Loading - Rerating Piping Systems 127 127
Mandatory Appendices
A Allowable Stress Tables ...... 128B Thermal Expansion Data . . 250C Moduli of Elasticity .. Flexibility And Stress Intensification Factors .......... 259F D Referenced Standards .. 266 267Nomenclature . 271H N Rules for Nonmetallic Piping and Piping Lined With Nonmetals . .. . . * * Preparation Of Technical Inquiries . 277 2780 Use of Alternative Ultrasonic Acceptance Criteria .. .. 309P Q Metallic Bellows Expansion Joints . Quality Management Program Requirements for Metallic Nonboiler External Piping- 312Covered Piping Systems .. . 316R Documentation Records and Report Requirements for Metallic Nonboiler External Piping Covered Piping Systems . 320
Nonmandatory Appendices
Ⅱ Rules for the Design of Safety Valve Installations . 329IV Corrosion Control for ASME B31.1 power Piping Systems ......... 350
V Remended Practice for Operation Maintenance and Modification of Power Piping 354VII Procedures For the Design of Restrained Underground Piping ...... Systems... 368VIII Guidelines for Determining if Low-Temperature Service Requirements Apply . .. 381
Figures100.1.2-1 Code Jurisdictional Limits for Piping - An Example of Forced-Flow Steam Generators With100.1.2-2 Code Jurisdictional Limits for Piping An Example of Steam Separator Type Forced-Flow No Fixed Steam and Waterline ...... .100.1.2-3 Code Jurisdictional Limits for Piping Drum-Type Boilers .... Steam Generators With No Fixed Steam and Waterline . . . .100.1.2-4 Code urisdictional Limits for Piping -Isolable Economizers Located in Feedwater Pipingand solable SuperheatersinMainSteam Piping BoilerPressure Relief ValvesBlowoff and Miscellaneous Piping for Boiler Proper Not Shown for Clarity) . . . . 5100.1.2-5 Code Jurisdictional Limits for Piping - Reheaters and Nonintegral Separately Fired100.1.2-6 Code Jurisdictional Limits for Piping Spray-Type Desuperheater ... Superheaters .... 6 7100.1.2-7 Code Jurisdictional Limitsfor Piping Firetube Boiler ... Code Jurisdictional Limits for Piping - HRSG Desuperheater Protection Devices 8100.1.2-8 100.1.2-9 Code Jurisdictional Limits for Piping Steam Lootive Boiler With Dome Throttle 10 9100.1.2-10 Code Jurisdictional Lmits forPiping Steam Lootive BoileWithFront-EndThrottle 11102.4.5-1 104.3.1-1 Reinforcement of Branch Connections......... Nomenclature for Pipe Bends ... 24 32104.3.1-2 35104.5.3-1 Types of Permanent Blanks ..... 38 40122.1.7-1 104.8-1 Equations (15) (16) and (17) . - Typical Globe Valves . . . 61122.4-1 Desuperheater Schematic Arrangement....... 66127.4.2-1 127.3-1 Butt Welding of Piping Components With Internal Misalignment . ..* * Welding End Transition Maximum Envelope 90 88127.4.4-1 Fillet Weld Size .......... 92127.4.4-2 Welding Details forSlipOnand Socket-Welding Flanges; Some Acceptable Types ofFlange Attachment Welds....127.4.4-3 Minimum Welding Dimensions Required for Socket Welding Components Other Than127.4.8-1 Typical Welded Branch Connection Without Additional Reinforcement . . - 6127.4.8-2 Typical Welded Branch Connection With Additional Reinforcement 95127.4.8-3 127.4.8-4 Typical Welded Angular Branch Connection Without Additional Reinforcement . . Some Acceptable Types of Welded Branch Attachment Details Showing Minimum 95Acceptable Welds ........ 96127.4.8-5 127.4.8-6 Some Acceptable Details for Integrally Reinforced Outlet Fittings ........ 97Typical PartialPenetration Weld Branchand Instrument Connections forNPS 2 (DN 50) and Couplings or Adapters ............... 98127.4.8-7 99135.5.3-1 N-100.2.1-1 Winding Angle of Filament-Wound Thermosetting Resin Pipe - Typical Threaded Joints Using Straight Threads . . . 114 281
