No products
View larger
ASME B31.1-2018
M00050936
New product
ASME B31.1-2018 Power Piping
standard by ASME International, 07/20/2018
Full Description
ASME has been defining piping safety since 1922.ASME B31.1 prescribes minimum requirements for the design, materials, fabrication, erection, test, inspection, operation, and maintenance of piping systems typically found in electric power generating stations, industrial and institutional plants, geothermal heating systems, and central and district heating and cooling systems.
It also covers boiler-external piping for power boilers and high-temperature, high pressure water boilers in which steam or vapor is generated at a pressure of more than 15 psig; and high temperature water is generated at pressures exceeding 160 psig and/or temperatures exceeding 250 degrees F.
Key changes to this revision include:New and updated figures for Code Jurisdictional Limits on Piping New Mandatory Appendix on Metallic Bellows Expansion JointsNew Mandatory Appendix on Use of Alternative Ultrasonic Acceptance CriteriaReference to ASME CA-1, Conformity Assessment RequirementsASME B31.1 is one of ASME's most requested codes, widely adopted by jurisdictions worldwide. It is prominently referenced in ASME's Boiler and Pressure Vessel Code, Section I.
This Code serves as a companion to ASME's B31.3 Code on Process Piping as well as to the other codes in ASME's B31 series. Together, they remain essential references for anyone engaged with piping. Intended for manufacturers, designers, operators and owners of piping systems including, but not limited to, steam, water, oil, gas, and air services, plus all potential governing entities.
In stock
More info
Power Piping
ASME Code for Pressure Piping, B31
AN INTERNA TIONAL PIPING C ODE®
ASME B31.1-2018
(Revision of ASME B31.1-2016)
ASME B31.1-2018
(Revision of ASME B31.1-2016)
Power Piping
ASME Code for Pressure Piping, B31
AN INTERNATIONAL PIPING CODE®
Two Park Avenue • New York, NY • 10016 USA
Date of Issuance: July 20, 2018
The next edition of this Code is scheduled for publication in 2020. This Code will become effective 6 months after the Date of Issuance.
ASME issues written replies to inquiries concerning interpretations of technical aspects of this Code. Interpretations are published on the Committee web page and under https://go.asme.org/Interpretations. Periodically certain actions of the ASME B31 Committee may be published as Cases. Cases are published on the ASME website under the B31 Committee Page at https://go.asme.org/B31committee as they are issued.
Errata to codes and standards may be posted on the ASME website under the Committee Pages of the associated codes and standards to provide corrections to incorrectly published items, or to correct typographical or grammatical errors in codes and standards. Such errata shall be used on the date posted.
The B31 Committee Page can be found at https://go.asme.org/B31committee. The associated B31 Committee Pages for each code and standard can be accessed from this main page. There is an option available to automatically receive an e-mail notification when errata are posted to a particular code 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 international code or standard was developed under procedures accredited as meeting the criteria for American National Standards and it is an American National Standard. The Standards Committee that approved the code or standard was balanced to assure that individuals from competentand concerned interestshave had an opportunity to participate. The proposed code or standard was made available 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 any items mentioned in this document, and does not undertake to insure anyone utilizing a standard against liability for infringement of any applicable letters patent, nor assume any such liability. Users of a code or standard are expressly advised that determination of the validity of any such patent rights, and the risk of infringement of such rights, is entirely their own responsibility.
Participation by federal agency representative(s) or person(s) affiliated with industry is not to be interpreted as government or industry endorsement of this code or standard.
ASME accepts responsibility for only those interpretations of this document issued in accordance with the established ASME 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 Engineers Two Park Avenue, New York, NY 10016-5990
Copyright © 2018 by
THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS
All rights reserved Printed in U.S.A.
CONTENTS
Foreword viii
Committee Roster ix
Introduction xii
Summary of Changes xv
Chapter I | Scope and Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 1 |
100 | General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 1 |
Chapter II | Design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 15 |
PART 1 | Conditions and Criteria . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 15 |
101 | Design Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 15 |
102 | Design Criteria . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 16 |
PART 2 | Pressure Design of Piping Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 22 |
103 | Criteria for Pressure Design of Piping Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 22 |
104 | Pressure Design of Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 22 |
PART 3 | Selection and Limitations of Piping Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 36 |
105 | Pipe . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 36 |
106 | Fittings, Bends, and Intersections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 36 |
107 | Valves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 37 |
108 | Pipe Flanges, Blanks, Flange Facings, Gaskets, and Bolting . . . . . . . . . . . . . . . . . . . . . . . . | 38 |
PART 4 | Selection and Limitations of Piping Joints . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 39 |
110 | Piping Joints . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 39 |
111 | Welded Joints . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 39 |
112 | Flanged Joints . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 40 |
113 | Expanded or Rolled Joints . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 40 |
114 | Threaded Joints . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 40 |
115 | Flared, Flareless, and Compression Joints, and Unions . . . . . . . . . . . . . . . . . . . . . . . . . . . | 44 |
116 | Bell End Joints . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 44 |
117 | Brazed and Soldered Joints . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 45 |
118 | Sleeve Coupled and Other Proprietary Joints . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 45 |
PART 5 | Expansion, Flexibility, and Pipe-Supporting Element . . . . . . . . . . . . . . . . . . . . . . . . . . | 45 |
119 | Expansion and Flexibility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 45 |
120 | Loads On Pipe-Supporting Elements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 48 |
121 | Design of Pipe-Supporting Elements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 49 |
PART 6 | Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 52 |
122 | Design Requirements Pertaining to Specific Piping Systems . . . . . . . . . . . . . . . . . . . . . . . | 52 |
Chapter III | Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 67 |
123 | General Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 67 |
124 | Limitations On Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 68 |
125 | Creep Strength Enhanced Ferritic Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 70 |
Chapter IV 126 | Dimensional Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Material Specifications and Standards for Standard and Nonstandard Piping | 72 |
Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 72 | |
Chapter V | Fabrication, Assembly, and Erection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 81 |
127 | Welding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 81 |
128 | Brazing and Soldering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 88 |
129 | Bending and Forming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 92 |
130 | Requirements for Fabricating and Attaching Pipe Supports . . . . . . . . . . . . . . . . . . . . . . . | 95 |
131 | Welding Preheat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 95 |
132 | Postweld Heat Treatment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 97 |
133 | Stamping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 102 |
135 | Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 102 |
Chapter VI | Inspection, Examination, and Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 104 |
136 | Inspection and Examination . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 104 |
137 | Pressure Tests . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 108 |
Chapter VII | Operation and Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 112 |
138 | General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 112 |
139 | Operation and Maintenance Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 112 |
140 | Condition Assessment of CPS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 112 |
141 | CPS Records . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 113 |
142 | Piping and Pipe-Support Maintenance Program and Personnel Requirements . . . . . . . . . . | 114 |
144 | CPS Walkdowns . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 114 |
145 | Material Degradation Mechanisms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 114 |
146 | Dynamic Loading . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 114 |
Mandatory Appendices
A | Allowable Stress Tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 116 |
B | Thermal Expansion Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 229 |
C | Moduli of Elasticity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 239 |
D | Flexibility and Stress Intensification Factors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 246 |
F | Referenced Standards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 254 |
G | Nomenclature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 258 |
H | Preparation of Technical Inquiries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 264 |
N | Rules for Nonmetallic Piping and Piping Lined With Nonmetals . . . . . . . . . . . . . . . . . . . . | 266 |
O | Use of Alternative Ultrasonic Acceptance Criteria . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 295 |
P | Metallic Bellows Expansion Joints . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 298 |
Nonmandatory Appendices
II | Rules for the Design of Safety Valve Installations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 303 |
IV | Corrosion Control for ASME B31.1 Power Piping Systems . . . . . . . . . . . . . . . . . . . . . . . . | 323 |
V | Recommended Practice for Operation, Maintenance, and Modification of Power Piping Systems | 327 |
VII | Procedures for the Design of Restrained Underground Piping . . . . . . . . . . . . . . . . . . . . . . | 341 |
VIII | Guidelines for Determining if Low-Temperature Service Requirements Apply . . . . . . . . . . | 352 |
Figures 100.1.2-1 | Code Jurisdictional Limits for Piping — An Example of Forced Flow Steam Generators With No | |
Fixed Steam or Waterline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 3 | |
100.1.2-2 | Code Jurisdictional Limits for Piping — An Example of Steam Separator Type Forced Flow Steam Generators With No Fixed Steam or Waterline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 4 |
100.1.2-3 | Code Jurisdictional Limits for Piping — Drum-Type Boilers . . . . . . . . . . . . . . . . . . . . . . . | 5 |
100.1.2-4 | Code Jurisdictional Limits for Piping — Isolable Economizers Located in Feedwater Piping and Isolable Superheaters in Main Steam Piping (Boiler Pressure Relief Valves, Blowoff, and Miscellaneous Piping for Boiler Proper Not Shown for Clarity) . . . . . . . . . . . . . . . . . . . | 6 |
100.1.2-5 | Code Jurisdictional Limits for Piping — Reheaters and Nonintegral Separately Fired Superheaters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 7 |
100.1.2-6 | Code Jurisdictional Limits for Piping — Spray-Type Desuperheater . . . . . . . . . . . . . . . . . . | 8 |
100.1.2-7 | Code Jurisdictional Limits for Piping — HRSG — Desuperheater Protection Devices . . . . . | 9 |
102.4.5-1 | Nomenclature for Pipe Bends . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 20 |
104.3.1-1 | Reinforcement of Branch Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 27 |
104.3.1-2 | Reinforced Extruded Outlets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 30 |
104.5.3-1 | Types of Permanent Blanks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 34 |
104.8.4-1 | Cross Section Resultant Moment Loading . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 36 |
122.1.7-1 | Typical Globe Valves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 56 |
122.4-1 | Desuperheater Schematic Arrangement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | 60 |
127.3-1 | Butt Welding of Piping Components With Internal Misalignment . . . . . . . . . . . . . . . . . . . | 82 |
127.4.2-1 |
|