ANSI ISA 60079-0-2013 Explosive atmospheres C Part 0 Equipment C General Requirements (Sixth Edition 12.00.01)《爆炸性气体环境.第0部分 设备.通用要求》.pdf

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1、 AMERICAN NATIONAL STANDARD ANSI/ISA-60079-0 (12.00.01)-2013 Supercedes ANSI/ISA-60079-0 (12.00.01)-2009 Explosive atmospheres Part 0: Equipment General Requirements Approved 26 July 2013 Commitment for Amendments This standard is issued jointly by ISA and Underwriters Laboratories Incorporated (UL)

2、. Comments or proposals for revisions on any part of the standard may be submitted to ISA or UL at any time. Revisions to this standard will be made only after processing according to the standards development procedures of ISA and UL. ISA and UL will issue revisions to this standard by means of a n

3、ew edition or revised or additional pages bearing their date of issue. ISBN: 978-0-876640-26-5 Copyright 2013 By ISA These materials are subject to copyright claims of IEC, ANSI, and ISA. All rights reserved. Not for resale. Printed in the United States of America. No part of this publication may be

4、 reproduced in any form, including an electronic retrieval system, without the prior written permission of ISA. All requests pertaining to this standard should be submitted to ISA. Copyright 2013 Underwriters Laboratories Incorporated Revisions of this standard will be made by issuing revised or add

5、itional pages bearing their date of issue. A UL standard is current only if it incorporates the most recently adopted revisions, all of which are itemized on the transmittal notice that accompanies the latest set of revised requirements. The most recent designation of ANSI/ISA-60079-0 and ANSI/UL 60

6、079-0 as an American National Standard occurred on 26 July 2013. This ANSI/UL Standard for Safety, which consists of the sixth edition, is under continuous maintenance, whereby each revision is ANSI approved upon publication. Comments or proposals for revisions on any part of the standard may be sub

7、mitted to UL at any time. Proposals should be submitted via a Proposal Request in ULs On-Line Collaborative Standards Development System (CSDS) at http:/. ISA Underwriters Laboratories Inc. ANSI/ISA-60079-0 ANSI/UL 60079-0 Sixth Edition Sixth Edition Explosive atmospheres Part 0: Equipment - General

8、 Requirements This page intentionally left blank.26 July 2013 ANSI/ISA-60079-0 ANSI/UL 60079-0 5 General Notes This is the common ISA and UL standard for Explosive atmospheres Part 0: Equipment - General Requirements. It is the sixth edition of ANSI/ISA-60079-0 (superseding ANSI/ISA-60079-0 (12.00.0

9、1)-2009) and the sixth edition of ANSI/UL 60079-0. ANSI/ISA-60079-0 and ANSI/UL 60079-0 contain identical requirements, and identical publication dates. The presentation and format of the standards material may differ between the two published standards. This common standard was prepared by the Inte

10、rnational Society of Automation (ISA) and Underwriters Laboratories Inc. (UL). Although the intended primary application of this standard is stated in its scope, it is important to note that it remains the responsibility of the users of the standard to judge its suitability for their particular purp

11、ose. Level of harmonization This standard adopts the IEC text with deviations. The requirements are presented in different formats. The ISA version of the standard illustrates the national differences from the IEC text through the use of legislative text (strike-out and underline). The UL version of

12、 the standard illustrates national differences immediately following the IEC text. National differences between the UL version and the ISA version shall be word for word except for editorial changes. Interpretations The interpretation by the SDO of an identical or equivalent standard shall be based

13、on the literal text to determine compliance with the standard in accordance with the procedural rules of the SDO. If more than one interpretation of the literal text has been identified, a revision shall be proposed as soon as possible to each of the SDOs to more accurately reflect the intent. UL Ef

14、fective Date The effective date for UL is the date of publication. However, the fifth edition of UL 60079-0 will also be effective until 1 September 2018. A UL effective date is one established by Underwriters Laboratories Inc. and is not part of the ANSI approved standard. This page intentionally l

15、eft blank. 26 July 2013 ANSI/ISA-60079-0 ANSI/UL 60079-0 7 Preface (ISA) This ISA standard is based on the 6th edition of IEC Publication 60079-0. It is the intention of the ISA12 Committee to develop an ANSI Standard that is harmonized with IEC 60079-0 to the fullest extent possible. This preface i

16、s included for informational purposes and is not part of ANSI/ISA-60079-0. The document is a modification of the IEC document and includes U.S. deviations encompassing both additions and deletions of information. The significant changes with respect to the previous edition are listed below: Relocati

17、on of definitions for energy limitation parameters to IEC 60079-11 Addition of note to clarify that the non-metallic “enclosure” requirements are applied to other than “enclosures” by some of the subparts Expansion of material specification data for plastics and elastomers, including UV resistance A

18、ddition of alternative qualification for O-rings Addition of alternative criteria for surface resistance Addition of breakdown voltage limit for non-metallic layers applied to metallic enclosures Expansion of “X” marking options for non-metallic enclosure materials not meeting basic electrostatic re

19、quirements Clarification that non-metallic enclosure requirements also apply to painted or coated metal enclosures Clarification of test to determine capacitance of accessible metal parts with reduction in acceptable capacitance Addition of limits on zirconium content for Group III and Group II (Gb

20、only) enclosures Introduction of “X” marking for Group III enclosures not complying with basic material requirements, similar to that existing for Group II Addition of button-head cap screws to permitted “Special Fasteners” Reference for protective earthing (PE) requirements for electrical machines

21、to IEC 60034-1 Clarification of terminology for cable glands, blanking elements, and thread adapters Addition of requirements for ventilating fans Addition of alternative construction for disconnectors Removal of voltage limits on plugs and sockets Addition of test requirements for arc-quenching tes

22、t on plugs and sockets Update of cell and battery information to reflect latest standards Revision to impact test of glass parts Revision to impact test procedure to address “bounce” of impact head Clarification of the test requirements for “service” and “surface” temperature Addition of temperature

23、 rise tests for converter-fed motors Addition of alternative test method for thermal endurance Removal of “charging test” and addition of note providing guidance Clarification of test for the measurement of capacitance Addition of a “Schedule of Limitations” to certificates for Ex Components 8 ANSI/

24、ISA-60079-0 ANSI/UL 60079-0 26 July 2013 Clarification of the marking for multiple temperature classes Addition of marking for converter-fed motors Removal of IP marking for Group III Addition of specific instructions for electrical machines Addition of specific instructions for ventilating fans Upd

25、ate to informative Annex D on converter-fed motors Update to informative Annex E on temperature testing of motors Addition of informative Annex F, flowchart for testing of non-metallic enclosures and non-metallic parts of enclosures The standards referenced within this document may contain provision

26、s which, through reference in this text, constitute requirements of this document. At the time of publication, the editions indicated were valid. All standards are subject to revision, and parties to agreements based on this document are encouraged to investigate the possibility of applying the most

27、 recent editions of the standards indicated within this document. Members of IEC and ISO maintain registers of currently valid International Standards. ANSI maintains registers of currently valid U.S. National Standards. This document has been prepared as part of the service of the International Soc

28、iety of Automation (ISA) toward a goal of uniformity in the field of instrumentation. To be of real value, this document should not be static but should be subject to periodic review. Toward this end, the Society welcomes all comments and criticisms and asks that they be addressed to the Secretary,

29、Standards and Practices Board; ISA; 67 Alexander Drive; P. O. Box 12277; Research Triangle Park, NC 27709; Telephone (919) 549-8411; Fax (919) 549-8288; E-mail: standardsisa.org. The ISA Standards and Practices Department is aware of the growing need for attention to the metric system of units in ge

30、neral, and the International System of Units (SI) in particular, in the preparation of instrumentation standards. The Department is further aware of the benefits to USA users of ISA standards of incorporating suitable references to the SI (and the metric system) in their business and professional de

31、alings with other countries. Toward this end, this Department will endeavour to introduce SI-acceptable metric units in all new and revised standards, recommended practices, and technical reports to the greatest extent possible. IEEE/ASTM SI 10, American National Standard for Metric Practice, and fu

32、ture revisions, will be the reference guide for definitions, symbols, abbreviations, and conversion factors. It is the policy of ISA to encourage and welcome the participation of all concerned individuals and interests in the development of ISA standards, recommended practices, and technical reports

33、. Participation in the ISA standards-making process by an individual in no way constitutes endorsement by the employer of that individual, of ISA, or of any of the standards, recommended practices, and technical reports that ISA develops. CAUTION ISA DOES NOT TAKE ANY POSITION WITH RESPECT TO THE EX

34、ISTENCE OR VALIDITY OF ANY PATENT RIGHTS ASSERTED IN CONNECTION WITH THIS DOCUMENT, AND ISA DISCLAIMS LIABILITY FOR THE INFRINGEMENT OF ANY PATENT RESULTING FROM THE USE OF THIS DOCUMENT. USERS ARE ADVISED THAT DETERMINATION OF THE VALIDITY OF ANY PATENT RIGHTS, AND THE RISK OF INFRINGEMENT OF SUCH

35、RIGHTS, IS ENTIRELY THEIR OWN RESPONSIBILITY. PURSUANT TO ISAS PATENT POLICY, ONE OR MORE PATENT HOLDERS OR PATENT APPLICANTS MAY HAVE DISCLOSED PATENTS THAT COULD BE INFRINGED BY USE OF THIS DOCUMENT AND EXECUTED A LETTER OF ASSURANCE COMMITTING TO THE GRANTING OF A LICENSE ON A WORLDWIDE, NON-DISC

36、RIMINATORY BASIS, WITH A FAIR AND REASONABLE 26 July 2013 ANSI/ISA-60079-0 ANSI/UL 60079-0 9 ROYALTY RATE AND FAIR AND REASONABLE TERMS AND CONDITIONS. FOR MORE INFORMATION ON SUCH DISCLOSURES AND LETTERS OF ASSURANCE, CONTACT ISA OR VISIT WWW.ISA.ORG/STANDARDSPATENTS. OTHER PATENTS OR PATENT CLAIMS

37、 MAY EXIST FOR WHICH A DISCLOSURE OR LETTER OF ASSURANCE HAS NOT BEEN RECEIVED. ISA IS NOT RESPONSIBLE FOR IDENTIFYING PATENTS OR PATENT APPLICATIONS FOR WHICH A LICENSE MAY BE REQUIRED, FOR CONDUCTING INQUIRIES INTO THE LEGAL VALIDITY OR SCOPE OF PATENTS, OR DETERMINING WHETHER ANY LICENSING TERMS

38、OR CONDITIONS PROVIDED IN CONNECTION WITH SUBMISSION OF A LETTER OF ASSURANCE, IF ANY, OR IN ANY LICENSING AGREEMENTS ARE REASONABLE OR NON-DISCRIMINATORY. ISA REQUESTS THAT ANYONE REVIEWING THIS DOCUMENT WHO IS AWARE OF ANY PATENTS THAT MAY IMPACT IMPLEMENTATION OF THE DOCUMENT NOTIFY THE ISA STAND

39、ARDS AND PRACTICES DEPARTMENT OF THE PATENT AND ITS OWNER. ADDITIONALLY, THE USE OF THIS DOCUMENT MAY INVOLVE HAZARDOUS MATERIALS, OPERATIONS OR EQUIPMENT. THE DOCUMENT CANNOT ANTICIPATE ALL POSSIBLE APPLICATIONS OR ADDRESS ALL POSSIBLE SAFETY ISSUES ASSOCIATED WITH USE IN HAZARDOUS CONDITIONS. THE

40、USER OF THIS DOCUMENT MUST EXERCISE SOUND PROFESSIONAL JUDGMENT CONCERNING ITS USE AND APPLICABILITY UNDER THE USERS PARTICULAR CIRCUMSTANCES. THE USER MUST ALSO CONSIDER THE APPLICABILITY OF ANY GOVERNMENTAL REGULATORY LIMITATIONS AND ESTABLISHED SAFETY AND HEALTH PRACTICES BEFORE IMPLEMENTING THIS

41、 DOCUMENT. THE USER OF THIS DOCUMENT SHOULD BE AWARE THAT THIS DOCUMENT MAY BE IMPACTED BY ELECTRONIC SECURITY ISSUES. THE COMMITTEE HAS NOT YET ADDRESSED THE POTENTIAL ISSUES IN THIS VERSION. The following people served as members of ISA Subcommittee ISA12.0: NAME COMPANY W. Lawrence, Chair FM Appr

42、ovals LLC M. Coppler, Managing Director* Det Norske Veritas Certification Inc. D. Ankele UL LLC S. Arnold Ametek Drexelbrook K. Boegli Phoenix Contact S. Czaniecki Endress + Hauser Canada A. Engler* Det Norske Veritas DNV D. Jagger Bifold Fluid Power J. Jonscher Adalet PLM P. Kovscek Industrial Scie

43、ntific Corp. G. Kozinski GE Infrastructure Sensing J. Kuczka Killark C. Kurtzman Rosemount Inc. D. Lombard Vantage Technology LLC N. Ludlam FM Approvals Ltd. R. Masek CSA Group E. Massey Baldor Electric Co. O. Murphy Honeywell Inc. A. Page Consultant R. Parks Intertek R. Seitz Artech Engineering 10

44、ANSI/ISA-60079-0 ANSI/UL 60079-0 26 July 2013 J. Thomas Schlumberger D. Wechsler American Chemistry Council R. Wigg E-x Solutions International Pty. Ltd. _ * One vote per company The following people served as members of ISA Committee ISA12: NAME COMPANY T. Schnaare, Chair Rosemount Inc. W. Lawrence

45、, Vice Chair FM Approvals LLC M. Coppler, Managing Director Det Norske Veritas Certification Inc. R. Allen Honeywell Inc. D. Ankele UL LLC A. Ballard Consultant S. Bihler Zone Safe Solutions, Inc. K. Boegli Phoenix Contact Inc. D. Burns Shell P pressure 80 kPa (0,8 bar) to 110 kPa (1,1 bar); and air

46、 with normal oxygen content, typically 21 % v/v. This standard and other standards supplementing this standard specify additional test requirements for equipment operating outside the standard temperature range, but further additional consideration and additional testing may be required for equipmen

47、t operating outside the standard atmospheric pressure range and standard oxygen content, particularly with respect to types of protection that depend on quenching of a flame such as flameproof enclosure “d” (IEC 60079-1) or limitation of energy, intrinsic safety “i” (IEC 60079-11). NOTE 1 Although t

48、he standard atmospheric conditions above give a temperature range for the atmosphere of -20 C to +60 C, the normal ambient temperature range for the equipment is 20 C to +40 C, unless otherwise specified and marked. See 5.1.1. It is considered that 20 C to +40 C is appropriate for most equipment and

49、 that to manufacture all equipment to be suitable for a standard atmosphere upper ambient temperature of +60 C would place unnecessary design constraints. NOTE 2 Requirements given in this standard result from an ignition hazard assessment made on electrical equipment. The ignition sources taken into account are those found associated with this type of equipment, such as hot surfaces, mechanically generated sparks, mechanical impacts resulting in thermite

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