ASME B31.5 2019
$98.04
ASME B31.5-2019: Refrigeration Piping and Heat Transfer Components
| Published By | Publication Date | Number of Pages |
| ASME | 2019 | 105 |
ASME has been defining piping safety since 1922. ASME B31.5 covers refrigerant, heat transfer components, and secondary coolant piping for temperatures as low as -320°F (-196°C), whether erected on the premises or factory assembled. Users are advised that other piping Code Sections may provide requirements for refrigeration piping in their respective jurisdictions. This Code does not apply to any self-contained or unit systems subject to the requirements of Underwriters Laboratories or other nationally recognized testing laboratory. It also does not apply to water piping; piping designed for external or internal gage pressure not exceeding 15 psi (105 kPa) regardless of size; or pressure vessels, compressors, or pumps. However, B31.5 does include all connecting refrigerant and secondary coolant piping starting at the first joint adjacent to such apparatus. Key changes to this edition include revisions to sections on flange facings, bolting for cast iron flanges, and grey iron and malleable iron materials. B31.5 prescribes comprehensive solutions for materials, design, fabrication, assembly, erection, testing and inspection. It also serves as a companion to ASME’s B31.1 Code on Power Piping as well as to the other codes in ASME’s B31 series. Together, they remain essential references for anyone engaged with piping. Careful application of these B31 codes will help users to comply with applicable regulations within their jurisdictions, while achieving the operational, cost and safety benefits to be gained from the many industry best-practices detailed within these volumes. Intended for designers, owners, regulators, inspectors, and manufacturers of refrigeration piping and heat transfer components.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 4 | CONTENTS |
| 7 | FOREWORD |
| 8 | ASME B31 COMMITTEE ROSTER |
| 10 | CORRESPONDENCE WITH THE B31 COMMITTEE |
| 12 | INTRODUCTION |
| 14 | ASME B31.5-2019 SUMMARY OF CHANGES |
| 16 | Chapter I Scope and Definitions 500 GENERAL STATEMENTS 500.1 Scope 500.2 Definitions |
| 20 | 500.3 Nomenclature |
| 21 | Tables Table 500.2-1 Refrigerant Safety Classifications |
| 23 | Table 500.2-2 Safety Classifications for Refrigerant Blends |
| 25 | Chapter II Design PART 1 CONDITIONS AND CRITERIA 501 DESIGN CONDITIONS 501.1 General 501.2 Pressure 501.3 Temperature 501.4 Ambient Influences 501.5 Dynamic Effects |
| 26 | 501.6 Weight Effects 501.7 Thermal Expansion and Contraction Loads 502 DESIGN CRITERIA 502.1 General 502.2 Pressure–Temperature Design Criteria for Piping Components |
| 27 | 502.3 Allowable Stresses and Other Stress Limits |
| 28 | Table 502.3.1-1 Maximum Allowable Stress Values, ksi (Multiply by 1,000 to Obtain psi) |
| 37 | Figures Figure 502.3.2-1 Stress Range Reduction Factors |
| 38 | 502.4 Allowances PART 2 DESIGN OF PIPING COMPONENTS 503 CRITERIA FOR DESIGN OF PIPING COMPONENTS 504 PRESSURE DESIGN OF PIPING COMPONENTS 504.1 Straight Pipe |
| 39 | 504.2 Curved Segments of Pipe 504.3 Intersections |
| 41 | Figure 504.3.1-1 Reinforcement of Branch Connections |
| 43 | Figure 504.3.1-2 Extruded Outlet Header Notation |
| 45 | Figure 504.3.1-3 Mechanically Formed Tee Connections in Copper Materials |
| 46 | 504.4 Closures |
| 47 | 504.5 Pressure Design of Flanges and Blanks 504.6 Headers 504.7 Design of Other Pressure-Containing Components |
| 48 | PART 3 DESIGN APPLICATION OF PIPING COMPONENTS SELECTION AND LIMITATIONS 505 PIPE 505.1 General Figure 504.5.3-1 Blanks |
| 49 | 505.2 Nonferrous Pipe or Tube 506 FITTINGS, BENDS, AND INTERSECTIONS 506.1 Fittings 506.2 Bends and Intersections 506.3 Limitation on Materials for Fittings 507 VALVES 508 FLANGES, BLANKS, FLANGE FACINGS, GASKETS, AND BOLTING 508.1 Flanges 508.2 Blanks 508.3 Flange Facings 508.4 Gaskets 508.5 Bolting |
| 50 | PART 4 SELECTION AND LIMITATIONS OF PIPING JOINTS 510 PIPING JOINTS 510.1 General 511 WELDED JOINTS 511.1 General 511.2 Butt Welds 511.3 Socket Welds 511.4 Fillet Welds 511.5 Seal Welds 512 FLANGED JOINTS 513 EXPANDED JOINTS 514 THREADED JOINTS |
| 51 | 515 FLARED, FLARELESS, AND COMPRESSION JOINTS 515.1 Selection and Application 515.2 Piping Joints With Applicable Standards 515.3 Piping Joints Without Applicable Standards 517 BRAZED AND SOLDERED JOINTS 518 SLEEVE COUPLED AND OTHER NOVEL OR PATENTED JOINTS PART 5 EXPANSION, FLEXIBILITY, STRUCTURAL ATTACHMENTS, SUPPORTS, AND RESTRAINTS 519 EXPANSION AND FLEXIBILITY 519.1 General Table 514-1 Minimum Thickness of External Threaded Components |
| 52 | 519.2 Concepts |
| 53 | 519.3 Properties 519.4 Analysis for Bending Flexibility |
| 54 | Table 519.3.1-1 Thermal Expansion Data, e (USC and SI) |
| 55 | Table 519.3.2-1 Moduli of Elasticity, E (USC and SI) |
| 56 | Table 519.3.6-1 Flexibility Factor, k, and Stress Intensification Factor, i |
| 59 | Figure 519.4.5-1 Bends |
| 60 | Figure 519.4.5-2 Branch Connections |
| 61 | 520 DESIGN OF PIPE SUPPORTING ELEMENTS 520.1 General |
| 62 | 521 DESIGN LOADS FOR PIPE SUPPORTING ELEMENTS 521.1 General 521.2 Resilient Variable-Support and Constant-Support Types 521.3 Design Details |
| 63 | Table 521.3.1-1 Minimum Sizes of Straps, Rods, and Chains for Hangers |
| 64 | Chapter III Materials 523 MATERIALS — GENERAL REQUIREMENTS 523.1 Materials and Specifications 523.2 Limitations on Materials |
| 65 | Table 523.1-1 Acceptable Materials — Specifications |
| 69 | Figure 523.2.2-1 Reduction in Minimum Design Metal Temperature Without Impact Testing |
| 70 | 523.3 Deterioration of Materials in Service 524 MATERIALS APPLIED TO MISCELLANEOUS PARTS 524.1 Gaskets 524.2 Bolting Table 523.2.2-1 Impact Exemption Temperatures |
| 71 | Chapter IV Dimensional Requirements 526 DIMENSIONAL REQUIREMENTS FOR STANDARD AND NONSTANDARD PIPING COMPONENTS 526.1 Standard Piping Components 526.2 Nonstandard Piping Components 526.3 Threads |
| 72 | Table 526.1-1 Dimensional Standards |
| 74 | Chapter V Fabrication and Assembly 527 WELDING 527.1 Material 527.2 Preparation |
| 75 | 527.3 Procedure Figure 527.1.2-1 Typical Joints With Backing Ring Figure 527.2.1-1 Butt Welding End Preparation |
| 76 | Figure 527.2.1-2 Internal Trimming for Butt Welding of Piping Components With Internal Misalignment |
| 77 | Figure 527.3.3-1 Fillet Weld Size |
| 78 | Figure 527.3.3-2 Welding Details for Slip-On and Socket Welding Flanges, and Some Acceptable Types of Flange Attachment Welds Figure 527.3.3-3 Minimum Welding Dimensions Required for Socket Welding Components Other Than Flanges Figure 527.3.5-1 Typical Welded Branch Connection Without Additional Reinforcement Figure 527.3.5-2 Typical Welded Branch Connection With Additional Reinforcement Figure 527.3.5-3 Typical Welded Angular Branch Connection Without Additional Reinforcement |
| 79 | 527.4 Responsibility Figure 527.3.5-4 Some Acceptable Types of Welded Branch Attachment Details Showing Minimum Acceptable Welds |
| 80 | Figure 527.3.5-5 Some Acceptable Details for Integrally Reinforced Outlet Fittings |
| 81 | 527.5 Qualification Records 527.6 Defect Repairs 528 BRAZING AND SOLDERING 528.1 Brazing Materials |
| 82 | Figure 527.3.6-1 Acceptable Welds for Flat Plate Closures |
| 83 | 528.2 Brazing Preparation and Procedures 528.3 Soldering Materials 528.4 Soldering Preparation and Procedure 529 BENDING — HOT AND COLD 529.1 Radii of Bends 529.2 Procedure Figure 527.3.6-2 Unacceptable Welds for Flat Plate Closures |
| 84 | 529.3 Heat Treatment 530 FORMING 530.1 Procedure 530.2 Heat Treatment 531 HEAT TREATMENT 531.1 Heating and Cooling Method 531.2 Preheating 531.3 Postheat Treatment |
| 85 | 535 ASSEMBLY 535.1 General 535.2 Bolting Procedure 535.3 Threaded Piping 535.4 Welded Joints 535.5 Brazed Sleeve Joints 535.6 Soldered Sleeve Joints 535.7 Flare-Type Fitting Joints 535.8 Flareless and Compression-Type Fitting Joints 535.9 Assembly of Hangers |
| 86 | 535.10 Piping Identification |
| 87 | Table 531.2.1-1 Heat Treatment of Welds |
| 90 | Chapter VI Examination, Inspection, and Testing 536 EXAMINATION 536.1 Definition 536.2 Responsibility 536.3 Examination Personnel Qualification and Certification 536.4 Required Examination |
| 91 | 536.5 Supplementary Examination 536.6 Types of Examinations |
| 92 | 537 INSPECTION 537.1 Definition 537.2 Responsibility 537.3 Rights of Inspectors 537.4 Qualifications of the Owner’s Inspector 538 TESTING 538.1 Testing Before Erection or Assembly 538.2 Preparation for Testing 538.3 Factory Testing of Refrigerant Piping 538.4 Field Testing of Refrigerant Piping |
| 93 | 538.5 Testing Medium for Refrigerant Piping 538.6 Pressure Tests for Secondary Coolant Piping 538.7 Pressure Gages 538.8 Repair of Joints 539 RECORDS 539.1 Definition 539.2 Responsibility 539.3 Extent and Retention of Records |
| 94 | MANDATORY APPENDIX I REFERENCED STANDARDS |
| 97 | NONMANDATORY APPENDIX A PREPARATION OF TECHNICAL INQUIRIES |
| 98 | NONMANDATORY APPENDIX B SELECTING APPLICABLE PIPING CODES B-1 GENERAL B-2 ASME B31 CODES |
| 99 | B-3 OTHER PIPING CODES |
| 100 | NONMANDATORY APPENDIX C NOMENCLATURE |
| 101 | Table C-1 Nomenclature |
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