国际国外规范ASHRAE 34-2019 Addendum a.pdf

ANSI/ASHRAE Addendum a to ANSI/ASHRAE Standard 34-2019 Designation and Safety Classification of Refrigerants Approved by the ASHRAE Standards Committee on October 16, 2019; by the ASHRAE Board of Directors on November 1, 2019; and by the American National Standards Institute on November 5, 2019. This addendum was approved by a Standing Standard Project Committee (SSPC) for which the Standards Committee has established a documented program for regular publication of addenda or revisions, including procedures for timely, docu- mented, consensus action on requests for change to any part of the standard. Instructions for how to submit a change can be found on the ASHRAE® website (/continuous-maintenance). The latest edition of an ASHRAE Standard may be purchased on the ASHRAE website () or from ASHRAE Customer Service, 1791 Tullie Circle, NE, Atlanta, GA 30329-2305. E-mail: orders@. Fax: 678-539- 2129. Telephone: 404-636-8400 (worldwide), or toll free 1-800-527-4723 (for orders in US and Canada). For reprint per- mission, go to /permissions. © 2019 ASHRAE ISSN 1041-2336 © ASHRAE. Per international copyright law, additional reproduction, distribution, or transmission in either print or digital form is not permitted without ASHRAEs prior written permission. ASHRAE Standing Standard Project Committee 34 Cognizant TC: 3.1, Refrigerants and Secondary Coolants SPLS Liaison: Charles S. Barnaby Staff Liaison: Brian C.