ISA 60079-7-2008 Explosive Atmospheres - Part 7 Equipment protection by increased safety e (Fourth Edition 12 16 01)《爆炸性环境 第7部分 增强的安全性 e 对设备的防护[代替 ISA 12 16 01 ISA 12 16 01和ISA S.pdf
《ISA 60079-7-2008 Explosive Atmospheres - Part 7 Equipment protection by increased safety e (Fourth Edition 12 16 01)《爆炸性环境 第7部分 增强的安全性 e 对设备的防护[代替 ISA 12 16 01 ISA 12 16 01和ISA S.pdf》由会员分享,可在线阅读,更多相关《ISA 60079-7-2008 Explosive Atmospheres - Part 7 Equipment protection by increased safety e (Fourth Edition 12 16 01)《爆炸性环境 第7部分 增强的安全性 e 对设备的防护[代替 ISA 12 16 01 ISA 12 16 01和ISA S.pdf(104页珍藏版)》请在麦多课文档分享上搜索。
1、 AMERICAN NATIONAL STANDARD ANSI/ISA-60079-7 (12.16.01)-2008 (R2013) Supercedes ANSI/ISA-60079-7 (12.16.01)-2002 Explosive Atmospheres - Part 7: Equipment protection by increased safety “e“ Approved 31 May 2013 Commitment for Amendments This standard is issued jointly by ISA and Underwriters Laborat
2、ories Incorporated (UL). 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 s
3、tandard by means of a new edition or revised or additional pages bearing their date of issue. ISBN: 978-0-876640-23-4 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
4、this publication may be 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. ISBN Copyright 2013 Underwriters Laboratories Incorporated Revisions of this standard will be ma
5、de by issuing revised or additional 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 ANS
6、I/ISA-60079-7 and ANSI/UL 60079-7 as an American National Standard occurred on 31 May 2013. This ANSI/UL Standard for Safety, which consists of the fourth edition, is under continuous maintenance, whereby each revision is ANSI approved upon publication. Comments or proposals for revisions on any par
7、t of the standard may be submitted 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-60079-7 ANSI/UL 60079-7 Fourth Edition Fourth Edition Explosive Atmospher
8、es - Part 7: Equipment protection by increased safety “e“ This page intentionally left blank.31 May 2013 ANSI/ISA-60079-7 ANSI/UL 60079-7 5 General Notes This is the common ISA and UL standard for Explosive Atmospheres - Part 7: Equipment protection by increased safety “e“. It is the fourth edition
9、of ANSI/ISA-60079-7 and the fourth edition of ANSI/UL 60079-7. The document is a modification of the IEC document and includes U.S. deviations encompassing both additions and deletions of information. ANSI/ISA-60079-7 and ANSI/UL 60079-7 contain identical requirements, and identical publication date
10、s. The presentation and format of the standards material may differ between the two published standards. This common standard was prepared by 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 i
11、t remains the responsibility of the users of the standard to judge its suitability for their particular purpose. 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 dif
12、ferences from the IEC text through the use of legislative text (strike-out and underline). The UL version of 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 c
13、hanges. Interpretations The interpretation by the SDO of an identical or equivalent standard shall be based 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 rev
14、ision shall be proposed as soon as possible to each of the SDOs to more accurately reflect the intent. UL Effective Date The requirements in this standard are effective 15 October 2011. This page intentionally left blank. 31 May 2013 ANSI/ISA-60079-7 ANSI/UL 60079-7 7 Preface This ISA standard is ba
15、sed on IEC Publication 60079-7. It is the intention of the ISA12 Committee to develop an ANSI Standard that is harmonized with IEC 60079-7 to the fullest extent possible. This preface, as well as all footnotes and annexes, is included for information purposes and is not part of ANSI/ISA-60079-7 (12.
16、16.01)-2008 (R2013). The standards referenced within this document may contain provisions 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 b
17、ased on this document are encouraged to investigate the possibility of applying the most 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 St
18、andards. This document has been prepared as part of the service of 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
19、asks that they be addressed to the Secretary, 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
20、 attention to the metric system of units in general, 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
21、 system) in their business and professional dealings with other countries. Toward this end, this Department will endeavor to introduce SI-acceptable metric units in all new and revised standards, recommended practices, and technical reports to the greatest extent possible. Standard for Use of the In
22、ternational System of Units (SI): The Modern Metric System, published by the American Society for Testing b) provide a means to avoid loosening of the connection in service; c) be such that contact is assured without damage to the conductors such that would impair the ability of the conductors to fu
23、lfil their function, even if multi-stranded conductors are used in connections intended for direct clamping of a single conductor; d) provide a positive compression force to assure contact pressure in service; e) be constructed in such a way that the contact they assure is not appreciably impaired b
24、y temperature changes occurring in normal service; f) except as permitted by the earth continuity test of IEC 60079-0, provide contact pressure that is not applied through insulating materials; g) not be specified to accommodate more than one individual conductor in a clamping point unless specifica
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