UL 60079-30-1-2017 UL Standard for Safety Explosive Atmospheres C Part 30-1 Electrical Resistance Trace Heating C General and Testing Requirements (First Edition).pdf

1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL 60079-30-1 Explosive Atmospheres Part 30-1: Electrical Resistance Trace Heating General and Testing Requirements STANDARD FOR SAFETYUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODU

2、CTION OR DISTRIBUTION WITHOUT PERMISSION FROM ULUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL Standard for Safety for Explosive Atmospheres Part 30-1: Electrical Resistance Trace Heating General and Testing Requirements, UL 60079-30-1 F

3、irst Edition, Dated May 5, 2017 Summary of Topics Adoption of IEC/IEEE 60079-30-1, Explosive Atmospheres - Part 30-1: Electrical Resistance Trace Heating General and Testing Requirements (rst edition, issued by IEC September 2015) as a new IEC/IEEE based UL standard, UL 60079-30-1 with US National D

4、ifferences. The requirements are substantially in accordance with Proposal(s) on this subject dated March 10, 2017. All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form by any means, electronic, mechanical photocopying, recordin

5、g, or otherwise without prior permission of UL. UL provides this Standard as is without warranty of any kind, either expressed or implied, including but not limited to, the implied warranties of merchantability or tness for any purpose. In no event will UL be liable for any special, incidental, cons

6、equential, indirect or similar damages, including loss of prots, lost savings, loss of data, or any other damages arising out of the use of or the inability to use this Standard, even if UL or an authorized UL representative has been advised of the possibility of such damage. In no event shall ULs l

7、iability for any damage ever exceed the price paid for this Standard, regardless of the form of the claim. Users of the electronic versions of ULs Standards for Safety agree to defend, indemnify, and hold UL harmless from and against any loss, expense, liability, damage, claim, or judgment (includin

8、g reasonable attorneys fees) resulting from any error or deviation introduced while purchaser is storing an electronic Standard on the purchasers computer system. MAY 5, 2017 UL 60079-30-1 tr1UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL M

9、AY 5, 2017 UL 60079-30-1 tr2 No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL MAY 5, 2017 1 UL 60079-30-1 Standard for Explosive Atmospheres Part 30-1: Electrical Resistance Trace Heating General and Testing Requirements F

10、irst Edition May 5, 2017 This ANSI/UL Standard for Safety consists of the First Edition. The most recent designation of ANSI/UL 60079-30-1 as an American National Standard (ANSI) occurred on May 5, 2017. ANSI approval for a standard does not include the Cover Page, Transmittal Pages, and Title Page.

11、 The National Difference Page and IEC Foreword are also excluded from the ANSI approval of IEC-based standards. Comments or proposals for revisions on any part of the Standard may be submitted to UL at any time. Proposals should be submitted via a Proposal Request in ULs On-Line Collaborative Standa

12、rds Development System (CSDS) at https:/. ULs Standards for Safety are copyrighted by UL. Neither a printed nor electronic copy of a Standard should be altered in any way. All of ULs Standards and all copyrights, ownerships, and rights regarding those Standards shall remain the sole and exclusive pr

13、operty of UL. COPYRIGHT 2017 UNDERWRITERS LABORATORIES INC. ANSI/UL 60079-30-1-2017UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL MAY 5, 2017 UL 60079-30-1 2 No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTIO

14、N OR DISTRIBUTION WITHOUT PERMISSION FROM UL CONTENTS Preface (UL) 6 National Differences 8 FOREWORD 9 INTRODUCTION . 14 1 Scope .15 2 Normative references .19 3 Terms and denitions 20 4 General requirements 27 4.1 General 27 4.2 Mechanical strength .28 4.3 Terminations and connections 28 4.4 Circui

15、t protection requirements for branch circuits .28 4.5 Temperature requirements 29 5 Testing .32 5.1 Type tests 32 5.2 Routine tests .60 6 Marking .60 6.1 Product markings for trace heaters 60 6.2 Markings for eld assembled components 61 7 Documentation requirements 61 7.1 General 61 7.2 Circuit desi

16、gn documentation .62 7.3 Trace heating system documentation 62 7.4 Instructions for installation of trace heating system 64 7.5 Instructions for commissioning 65 7.6 Instructions for maintenance / repair or modication .65 Annex A (informative) Type test matrix for EPLs Gb/Gc/Db/Dc (Refer to IEC 6007

17、9-14 for the relationship of EPLs to Zones) Annex B (informative) Checklist for installation Annex C (normative) Trace heater product design verication methodology C.1 General .68 C.2 Design methodology and selection of trace heaters 68 C.3 Stabilized design calculations .68 C.4 Trace heater perform

18、ance and equilibrium conditions 69 C.5 Heat loss calculations 72 C.6 Heat loss design safety factor .74 C.7 Maximum temperature determination .74 C.7.1 Theoretical pipe and sheath temperature calculations Metallic applications .74 C.7.2 Theoretical vessel and sheath temperature calculations Metallic

19、 applications .76 MAY 5, 2017 UL 60079-30-1 3UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL C.7.3 Sheath temperature metallic applications utilizing a temperature limiter control sensing the trace heater sheath or an articial hot spot 77 C.

20、7.4 Theoretical sheath temperature calculations Non-metallic applications .78 C.7.5 Sheath temperature non-metallic applications utilizing a temperature limiter control sensing the trace heater sheath or an articial hot spot 79 Annex D (normative) Requirements for Division 1 and Division 2 trace hea

21、ting systems D.1 Application 80 D.2 General .80 D.3 Terminations and connections .80 D.4 Control and temperature requirements 80 D.4.1 General 80 D.4.2 Stabilized design 81 D.4.3 Controlled design 81 D.4.4 Requirements for protective device in Divisions 1 and 2 82 D.5 Type tests 82 D.5.1 Division 1

22、trace heating equipment 82 D.5.2 Division 2 equipment .82 D.6 Marking .83 D.7 Instructions Installation requirements .83 Annex E (normative) Type test matrix for Division 1 and 2 explosive atmospheres Bibliography MAY 5, 2017 UL 60079-30-1 4UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUC

23、TION OR DISTRIBUTION WITHOUT PERMISSION FROM UL MAY 5, 2017 UL 60079-30-1 5 No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL Preface (UL) This UL Standard is based on IEC/IEEE Publication 60079-30-1: rst edition Explosive

24、Atmospheres - Part 30-1: Electrical Resistance Trace Heating General and Testing Requirements. IEC publication 60079-30-1 is copyrighted by the IEC. The text, gures and tables of IEC Publication Explosive Atmospheres Part 30-1: Electrical Resistance Trace Heating - General and Testing Requirements,

25、IEC 60079-30-1, copyright September 2015 are used in this Standard with the consent of the IEC and the American National Standards Institute (ANSI). The IEC copyrighted material has been reproduced with permission from ANSI. ANSI should be contacted regarding the reproduction of any portion of the I

26、EC material. The IEC Foreword and Introduction are not a part of the requirements of this Standard but are included for information purposes only. Copies of IEC Publication 60079-26 may be purchased from ANSI, 11 West 42nd Street, New York, New York, 10036, (212) 642-4900. These materials are subjec

27、t to copyright claims of IEC and UL. No part of this publication may be reproduced in any form, including an electronic retrieval system, without the prior written permission of UL. All requests pertaining to the Std. title and designation Standard should be submitted to UL. Note Although the intend

28、ed 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 purpose. The following people served as members of STP 60079 and participated in the review of this st

29、andard: NAME COMPANY *B. Zimmermann, Chair R Stahl Inc. *T. Adam FM Approvals LLC R. Allen Honeywell Inc. D. Ankele UL LLC S. Bihler-Lopez CML Inc. S. Blais Appleton Group K. Boegli KBB Consulting R. Brownlee Pepperl + Fuchs Inc. D. Burns Shell P any IEC National Committee interested in the subject

30、dealt with may participate in this preparatory work. International, governmental and nongovernmental organizations liaising with the IEC also participate in this preparation. IEEE Standards documents are developed within IEEE Societies and Standards Coordinating Committees of the IEEE Standards Asso

31、ciation (IEEE-SA) Standards Board. IEEE develops its standards through a consensus development process, approved by the American National Standards Institute, which brings together volunteers representing varied viewpoints and interests to achieve the nal product. Volunteers are not necessarily memb

32、ers of IEEE and serve without compensation. While IEEE administers the process and establishes rules to promote fairness in the consensus development process, IEEE does not independently evaluate, test, or verify the accuracy of any of the information contained in its standards. Use of IEEE Standard

33、s documents is wholly voluntary. IEEE documents are made available for use subject to important notices and legal disclaimers (see http:/standards.ieee.org/IPR/ disclaimers.html for more information). IEC collaborates closely with IEEE in accordance with conditions determined by agreement between th

34、e two organizations. This Dual Logo International Standard was jointly developed by the IEC and IEEE under the terms of that agreement. 2) The formal decisions of IEC on technical matters express, as nearly as possible, an international consensus of opinion on the relevant subjects since each techni

35、cal committee has representation from all interested IEC National Committees. The formal decisions of IEEE on technical matters, once consensus within IEEE Societies and Standards Coordinating Committees has been reached, is determined by a balanced ballot of materially interested parties who indica

36、te interest in reviewing the proposed standard. Final approval of the IEEE standards document is given by the IEEE Standards Association (IEEE-SA) Standards Board. 3) IEC/IEEE Publications have the form of recommendations for international use and are accepted by IEC National Committees/IEEE Societi

37、es in that sense. While all reasonable efforts are made to ensure that the technical content of IEC/IEEE Publications is accurate, IEC or IEEE cannot be held responsible for the way in which they are used or for any misinterpretation by any end user. 4) In order to promote international uniformity,

38、IEC National Committees undertake to apply IEC Publications (including IEC/IEEE Publications) transparently to the maximum extent possible in their national and regional publications. Any divergence between any IEC/IEEE Publication and the corresponding national or regional publication shall be clea

39、rly indicated in the latter. 5) IEC and IEEE do not provide any attestation of conformity. Independent certication bodies provide conformity assessment services and, in some areas, access to IEC marks of conformity. IEC and IEEE are not responsible for any services carried out by independent certication bodies. 6) All users should ensure that they have the latest edition of this publication. MAY 5, 2017 UL 60079-30-1 9