Refrigeration Piping and Heat Transfer Components

ASME Code for Pressure Piping, B31

AN A MERICAN NA TIONAL S T AND ARD

ASME B31.5-2016

(Revision of ASME B31.5-2013)

ASME B31.5-2016

(Revision of ASME B31.5-2013)

Refrigeration Piping and Heat Transfer Components

ASME Code for Pressure Piping, B31

AN AMERICAN NA TIONAL S T AND ARD

Two Park Avenue • New York, NY • 10016 USA

Date of Issuance: June 29, 2016

The next edition of this Code is scheduled for publication in 2019. This Code will become effective 6 months after the Date of Issuance.

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CONTENTS

Foreword v

Committee Roster vi

Introduction viii

Summary of Changes x

Nonmandatory Appendices

1. Referenced Standards 77

2. Preparation of Technical Inquiries 80

3. Selecting Applicable Piping Codes 81

4. Nomenclature 83

   FOREWORD

   
   

   The need for a national code for pressure piping became increasingly evident from 1915 to 1925. To meet this need, the American Engineering Standards Committee (later changed to American Standards Association, then changed to United States of America Standards Institute, and now known as the American National Standards Institute) initiated project B31 in March 1926, at the request of The American Society of Mechanical Engineers and with that Society the sole administrative sponsor. Because of the wide field involved, Sectional Committee B31, later changed to Standards Committee, was composed of representatives of some 40 different engineering societies, industries, government bureaus, institutes, and trade associations. After several years’ work, the first edition was published in 1935 as an American Tentative Standard Code for Pressure Piping.

   In order to keep the Code abreast of current develop- ments in piping design, welding, stress computations, new dimensional and material standards and specifica- tions, and increases in the severity of service conditions, revisions, supplements, and new editions of the Code were published as follows:

   
   

   B31.1-1942 American Standard Code for Pressure Piping

   B31.1a-1944 Supplement 1

   B31.1b-1947 Supplement 2

   B31.1-1951 American Standard Code for Pressure Piping

   B31.1a-1953 Supplement 1 to B31.1-1951

   
   

   B31.1-1955 American Standard Code for Pressure Piping

   In 1952, a new section of the Code was published to cover Gas Transmission and Distribution Piping Systems. In 1955, after a review by B31 Executive and Sectional Committees, a decision was made to develop and publish other industry sections as separate code documents of the American Standard Code for Pressure Piping.

   The first edition of Refrigeration Piping was published as ASA B31.5-1962, superseding Section 5 of B31.1-1955. This Section was revised in 1966. Following approval by the Sectional Committee and the sponsor, this revi- sion was approved by the United States of America Standards Institute on September 8, 1966, and desig- nated USAS B31.5-1966. Revision of this Section was approved on April 18, 1974 by the American National Standards Institute and designated ANSI B31.5-1974.

   In December 1978, the American National Standards Committee B31 was reorganized as the ASME Code for Pressure Piping, B31 Committee under procedures developed by the American Society of Mechanical Engineers and accredited by the American National Standards Institute. The Code designation was also changed to ANSI/ASME B31.

   Previous editions of this Code include those of 1983, 1987, 1989, 1992, 2001, 2006, 2010, and 2013. In this, the

   2016 Edition, new additions and revisions have been made to the text, shown in the Summary of Changes page.

   This Code was approved as an American National Standard on April 12, 2016.

   
   

   ASME B31 COMMITTEE

   Code for Pressure Piping

   (The following is the roster of the Committee at the time of approval of this Code.)

   
   

   STANDARDS COMMITTEE OFFICERS

   
   

   M. L. Nayyar, Chair

   1. C. Bodenhamer, Vice Chair

      1. P. Maslowski, Secretary

STANDARDS COMMITTEE PERSONNEL

R. J. T. Appleby, ExxonMobil Development Co.

C. Becht IV, Becht Engineering Co.

K. C. Bodenhamer, Willbros Professional Services

R. M. Bojarczuk, ExxonMobil Research & Engineering Co.

C. J. Campbell, Air Liquide

J. S. Chin, TransCanada Pipeline U.S.

D. D. Christian, Victaulic

R. P. Deubler, Fronek Power Systems, LLC

1. Eskridge, Jr., Jacobs Engineering

2. J. Fetzner, BP Exploration Alaska, Inc.

P. D. Flenner, Flenner Engineering Services

J. W. Frey, Stress Engineering Service, Inc.

D. R. Frikken, Becht Engineering Co.

R. A. Grichuk, Fluor Enterprises, Inc.

R. W. Haupt, Pressure Piping Engineering Associates, Inc.

G. A. Jolly, Flowserve/Gestra, USA

A. P. Maslowski, The American Society of Mechanical Engineers

W. J. Mauro, American Electric Power

J. E. Meyer, Louis Perry & Associates, Inc.

T. Monday, Team Industries, Inc.

M. L. Nayyar, NICE

G. R. Petru, Acapela Engineering Services, LLC

D. W. Rahoi, CCM 2000

R. Reamey, Turner Industries Group, LLC

E. H. Rinaca, Dominion Resources, Inc.

M. J. Rosenfeld, Kiefner/Applus — RTD

J. T. Schmitz, Southwest Gas Corp.

S. K. Sinha, Lucius Pitkin, Inc.

W. J. Sperko, Sperko Engineering Services, Inc.

J. Swezy, Jr., Boiler Code Technology, LLC

F. W. Tatar, FM Global

1. A. Vilminot, Black and Veatch

2. E. Hayden, Jr., Ex-Officio Member, Consultant

A. J. Livingston, Ex-Officio Member, Kinder Morgan

J. S. Willis, Ex-Officio Member, Page Southerland Page, Inc.

B31.5 REFRIGERATION PIPING SECTION COMMITTEE

H. Kutz, Chair, Johnson Controls Corp./York Process Systems

G. S. Derosier, Vice Chair, Evapco, Inc.

U. D’Urso, Secretary, The American Society of Mechanical Engineers

M. R. Braz, MRBraz & Associates, PLLC

R. J. Carstens, Colmac Coil Manufacturing, Inc.

A. A. Kailasam, Heatcraft Worldwide Refrigeration

G. W. Price, Johnson Controls

G. B. Struder, Guntner US

S. A. Walter, Vilter Manufacturing Corp.

D. F. Witte, Speer Mechanical

K. Wu, Stellar Energy Systems

R. J. Ferguson, Contributing Member, Metallurgist

H. Koca, Contributing Member, Baltimore Aircoil Co.

P. Papavizas, Contributing Member, Baltimore Aircoil Co.

J. A. Gruber, Honorary Member, J A Gruber & Associates, LLC