Transcription

This is a preview of "ASME B31.5-2019". Click here to purchase the full version from the ANSI store.ASME B31.5-2016(Revision of ASME B31.5-2013)RefrigerationPiping andHeat TransferComponentsASME Code for Pressure Piping, B31A N A M E R I C A N N AT I O N A L STA N DA R D

This is a preview of "ASME B31.5-2019". Click here to purchase the full version from the ANSI store.ASME B31.5-2016(Revision of ASME B31.5-2013)RefrigerationPiping andHeat TransferComponentsASME Code for Pressure Piping, B31A N A M E R I C A N N AT I O N A L S TA N D A R DTwo Park Avenue New York, NY 10016 USA

This is a preview of "ASME B31.5-2019". Click here to purchase the full version from the ANSI store.Date of Issuance: June 29, 2016The next edition of this Code is scheduled for publication in 2019. This Code will become effective6 months after the Date of Issuance.ASME issues written replies to inquiries concerning interpretations of technical aspects of this Code.Interpretations are published under http://go.asme.org/Interpretations. Periodically certain actionsof the ASME B31 Committees may be published as Cases. Cases are published on the ASME Website under the Committee Pages at http://go.asme.org/B31committee as they are issued.Errata to codes and standards may be posted on the ASME Web site under the Committee Pages ofthe associated codes and standards to provide corrections to incorrectly published items, or to correcttypographical or grammatical errors in codes and standards. Such errata shall be used on the dateposted.The B31 Committee Pages can be found at http://go.asme.org/B31committee. The associated B31Committee Pages for each code and standard can be accessed from this main page. There is anoption available to automatically receive an e-mail notification when errata are posted to a particularcode or standard. This option can be found on the appropriate Committee Page after selecting “Errata”in the “Publication Information” section.ASME is the registered trademark of The American Society of Mechanical Engineers.This code or standard was developed under procedures accredited as meeting the criteria for American NationalStandards. The Standards Committee that approved the code or standard was balanced to assure that individuals fromcompetent and concerned interests have had an opportunity to participate. The proposed code or standard was madeavailable for public review and comment that provides an opportunity for additional public input from industry, academia,regulatory agencies, and the public-at-large.ASME does not “approve,” “rate,” or “endorse” any item, construction, proprietary device, or activity.ASME does not take any position with respect to the validity of any patent rights asserted in connection with anyitems mentioned in this document, and does not undertake to insure anyone utilizing a standard against liability forinfringement of any applicable letters patent, nor assumes any such liability. Users of a code or standard are expresslyadvised that determination of the validity of any such patent rights, and the risk of infringement of such rights, isentirely their own responsibility.Participation by federal agency representative(s) or person(s) affiliated with industry is not to be interpreted asgovernment or industry endorsement of this code or standard.ASME accepts responsibility for only those interpretations of this document issued in accordance with the establishedASME procedures and policies, which precludes the issuance of interpretations by individuals.No part of this document may be reproduced in any form,in an electronic retrieval system or otherwise,without the prior written permission of the publisher.The American Society of Mechanical EngineersTwo Park Avenue, New York, NY 10016-5990Copyright 2016 byTHE AMERICAN SOCIETY OF MECHANICAL ENGINEERSAll rights reservedPrinted in U.S.A.

This is a preview of "ASME B31.5-2019". Click here to purchase the full version from the ANSI store.CONTENTSForeword . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Committee Roster . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Summary of Changes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .vviviiixChapter I500Scope and Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .General Statements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11Chapter IIPart 1501502Part 2503504Part 3505506507508Part 4510511512513514515517518Part 5519520521Design. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Conditions and Criteria . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Design Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Design Criteria . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Design of Piping Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Criteria for Design of Piping Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Pressure Design of Piping Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Design Application of Piping Components Selection and Limitations . . . . . . . . . .Pipe . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Fittings, Bends, and Intersections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Valves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Flanges, Blanks, Flange Facings, Gaskets, and Bolting . . . . . . . . . . . . . . . . . . . . . .Selection and Limitations of Piping Joints . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Piping Joints . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Welded Joints . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Flanged Joints . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Expanded Joints . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Threaded Joints . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Flared, Flareless, and Compression Joints . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Brazed and Soldered Joints . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Sleeve Coupled and Other Novel or Patented Joints . . . . . . . . . . . . . . . . . . . . . . . .Expansion, Flexibility, Structural Attachments, Supports, and Restraints . . . . . .Expansion and Flexibility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Design of Pipe Supporting Elements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Design Loads for Pipe Supporting Elements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . pter III523524Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Materials — General Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Materials Applied to Miscellaneous Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .494955Chapter IV526Dimensional Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Dimensional Requirements for Standard and Nonstandard PipingComponents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5656Fabrication and Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Welding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Brazing and Soldering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Bending — Hot and Cold . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Forming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Heat Treatment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .58586768686869Chapter V527528529530531535iii

This is a preview of "ASME B31.5-2019". Click here to purchase the full version from the ANSI store.Chapter VI536537538539Examination, Inspection, and Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Examination . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Records . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -2Stress Range Reduction Factors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Reinforcement of Branch Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Extruded Outlet Header Notation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Mechanically Formed Tee Connections in Copper Materials . . . . . . . . . . . . . . . .Blanks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Bends . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Branch Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Reduction in Minimum Design Metal Temperature Without ImpactTesting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Typical Joints With Backing Ring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Butt Welding End Preparation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Internal Trimming for Butt Welding of Piping Components With InternalMisalignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Fillet Weld Size . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Welding Details for Slip-On and Socket Welding Flanges, and SomeAcceptable Types of Flange Attachment Welds . . . . . . . . . . . . . . . . . . . . . . . . . . .Minimum Welding Dimensions Required for Socket WeldingComponents Other Than Flanges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Typical Welded Branch Connection Without Additional Reinforcement . . . . .Typical Welded Branch Connection With Additional Reinforcement . . . . . . . . .Typical Welded Angular Branch Connection Without AdditionalReinforcement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Some Acceptable Types of Welded Branch Attachment Details ShowingMinimum Acceptable Welds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Some Acceptable Details for Integrally Reinforced Outlet Fittings . . . . . . . . . . .Acceptable Welds for Flat Plate Closures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Unacceptable Welds for Flat Plate Closures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6521.3.1523.1523.2.2526.1531.2.1Refrigerant Safety Classifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Safety Classifications for Refrigerant Blends . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Maximum Allowable Stress Values, ksi . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Minimum Thickness of External Threaded Components . . . . . . . . . . . . . . . . . . . .Thermal Expansion Data, e (IP and SI) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Moduli of Elasticity, E (IP and SI) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Flexibility Factor, k, and Stress Intensification Factor, i . . . . . . . . . . . . . . . . . . . . . .Minimum Sizes of Straps, Rods, and Chains for Hangers . . . . . . . . . . . . . . . . . . .Acceptable Materials — Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Impact Exemption Temperatures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Dimensional Standards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Heat Treatment of Welds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4610363940414850545770Nonmandatory AppendicesAReferenced Standards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .BPreparation of Technical Inquiries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .CSelecting Applicable Piping Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .DNomenclature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -2527.3.5-3527.3.5-4iv5359595960616162626263646667