International Iec Standard 60079 10-Books Pdf

INTERNATIONAL IEC STANDARD 60079 10
17 May 2020 | 46 views | 5 downloads | 7 Pages | 230.87 KB

Share Pdf : International Iec Standard 60079 10

Download and Preview : International Iec Standard 60079 10

Report CopyRight/DMCA Form For : International Iec Standard 60079 10



Transcription

This is a preview click here to buy the full publication. INTERNATIONAL IEC, STANDARD 60079 10, Fourth edition. Electrical apparatus for explosive gas, atmospheres. Classification of hazardous areas, IEC 2002 Copyright all rights reserved. No part of this publication may be reproduced or utilized in any form or by any means electronic or mechanical. including photocopying and microfilm without permission in writing from the publisher. International Electrotechnical Commission 3 rue de Varemb PO Box 131 CH 1211 Geneva 20 Switzerland. Telephone 41 22 919 02 11 Telefax 41 22 919 03 00 E mail inmail iec ch Web www iec ch. Com mission Electrotechnique Internationale, International Electrotechnical Com m ission. PRICE CODE XA, For price see current catalogue, This is a preview click here to buy the full publication.
60079 10 IEC 2002 3, FOREWORD 5, INTRODUCTION 7, 1 General 9. 1 1 Scope 9, 1 2 Normative references 11, 2 Definitions and terms 11. 3 Safety and area classification 19, 3 1 Safety principles 19. 3 2 Area classification objectives 19, 4 Area classification procedure 21. 4 1 General 21, 4 2 Sources of release 23, 4 3 Type of zone 23.
4 4 Extent of zone 25, 4 4 1 Release rate of gas or vapour 25. 4 4 2 Lower explosive limit LEL 27, 4 4 3 Ventilation 27. 4 4 4 Relative density of the gas or vapour when it is released 27. 4 4 5 Other parameters to be considered 29, 4 4 6 Illustrative examples 29. 5 Ventilation 31, 5 1 General 31, 5 2 Main types of ventilation 31. 5 3 Degree of ventilation 31, 5 4 Availability of ventilation 31.
6 Documentation 33, 6 1 General 33, 6 2 Drawings data sheets and tables 33. Annex A informative Examples of sources of release 35. Annex B informative Ventilation 39, Annex C informative Examples of hazardous area classification 71. Figure C 1 Preferred symbols for hazardous area zones 113. Figure C 2 Schematic approach to the classification of hazardous areas 115. This is a preview click here to buy the full publication. 60079 10 IEC 2002 5, INTERNATIONAL ELECTROTECHNICAL COMMISSION. ELECTRICAL APPARATUS FOR EXPLOSIVE GAS ATMOSPHERES. Part 10 Classification of hazardous areas, 1 The IEC International Electrotechnical Commission is a worldwide organization for standardization comprising. all national electrotechnical committees IEC National Committees The object of the IEC is to promote. international co operation on all questions concerning standardization in the electrical and electronic fields To. this end and in addition to other activities the IEC publishes International Standards Their preparation is. entrusted to technical committees any IEC National Committee interested in the subject dealt with may. participate in this preparatory work International governmental and non governmental organizations liaising. with the IEC also participate in this preparation The IEC collaborates closely with the International. Organization for Standardization ISO in accordance with conditions determined by agreement between the. two organizations, 2 The formal decisions or agreements of the IEC on technical matters express as nearly as possible an.
international consensus of opinion on the relevant subjects since each technical committee has representation. from all interested National Committees, 3 The documents produced have the form of recommendations for international use and are published in the form. of standards technical specifications technical reports or guides and they are accepted by the National. Committees in that sense, 4 In order to promote international unification IEC National Committees undertake to apply IEC International. Standards transparently to the maximum extent possible in their national and regional standards Any. divergence between the IEC Standard and the corresponding national or regional standard shall be clearly. indicated in the latter, 5 The IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any. equipment declared to be in conformity with one of its standards. 6 Attention is drawn to the possibility that some of the elements of this International Standard may be the subject. of patent rights The IEC shall not be held responsible for identifying any or all such patent rights. International Standard IEC 60079 10 has been prepared by subcommittee 31J Classification. of hazardous areas and installation requirements of IEC technical committee 31 Electrical. apparatus for explosive atmospheres, This fourth edition cancels and replaces the third edition published in 1995 and constitutes a. technical revision, The text of this standard is based on the following documents.
FDIS Report on voting, 31J 82 FDIS 31J 84 RVD, Full information on the voting for the approval of this standard can be found in the report on. voting indicated in the above table, This publication has been drafted in accordance with the ISO IEC Directives Part 3. Annexes A B and C are for information only, The committee has decided that the contents of this publication will remain unchanged. until 2007 At this date the publication will be, reconfirmed. replaced by a revised edition or, This is a preview click here to buy the full publication.
60079 10 IEC 2002 7, INTRODUCTION, In areas where dangerous quantities and concentrations of flammable gas or vapour may. arise protective measures are to be applied in order to reduce the risk of explosions This. part of IEC 60079 sets out the essential criteria against which the risk of ignition can be. assessed and gives guidance on the design and control parameters which can be used in. order to reduce such a risk, This standard can be used as a basis for the proper selection and installation of apparatus for. use in a hazardous area, This is a preview click here to buy the full publication. 60079 10 IEC 2002 9, ELECTRICAL APPARATUS FOR EXPLOSIVE GAS ATMOSPHERES. Part 10 Classification of hazardous areas, This part of IEC 60079 is concerned with the classification of hazardous areas where.
flammable gas or vapour risks may arise in order to permit the proper selection and. installation of apparatus for use in such hazardous areas. It is intended to be applied where there may be a risk of ignition due to the presence of. flammable gas or vapour mixed with air under normal atmospheric conditions see note 2. but it does not apply to, a mines susceptible to firedamp. b the processing and manufacture of explosives, c areas where a risk may arise due to the presence of ignitable dusts or fibres. d catastrophic failures which are beyond the concept of abnormality dealt with in this. standard see note 3, e rooms used for medical purposes. f areas where the presence of flammable mist may give rise to an unpredictable risk and. which require special consideration see note 5, g domestic premises. This standard does not take into account the effects of consequential damage. Definitions and explanations of terms are given together with the main principles and. procedures relating to hazardous area classification. For detailed recommendations regarding the extent of the hazardous areas in specific. industries or applications reference may be made to the codes relating to those industries or. applications, NOTE 1 For the purpose of this standard an area is a three dimensional region or space.
NOTE 2 Atmospheric conditions include variations above and below reference levels of 101 3 kPa 1 013 mbar. and 20 C 293 K provided that the variations have a negligible effect on the explosion properties of the. flammable materials, NOTE 3 Catastrophic failure in this context is applied for example to the rupture of a process vessel or pipeline. and events that are not predictable, NOTE 4 In any process plant irrespective of size there may be numerous sources of ignition apart from those. associated with electrical apparatus Appropriate precautions will be necessary to ensure safety in this context. This standard may be used with judgement for other ignition sources. NOTE 5 Mists may form or be present at the same time as flammable vapours This may affect the way flammable. material disperses and the extent of any hazardous areas The strict application of area classification for gases. and vapours may not be appropriate because the flammability characteristics of mists are not always predictable. Whilst it can be difficult to decide upon the type and extent of zones the criteria applicable to gases and vapours. will in most cases give a safe result However special consideration should always be given to the danger of. ignition of flammable mists, This is a preview click here to buy the full publication. 60079 10 IEC 2002 11, 1 2 Normative references, The following referenced documents are indispensable for the application of this document. For dated references only the edition cited applies For undated references the latest edition. of the referenced document including any amendments applies. IEC 60050 426 1990 International Electrotechnical Vocabulary IEV Chapter 426. Electrical apparatus for explosive atmospheres, IEC 60079 4 1975 Electrical apparatus for explosive gas atmospheres Part 4 Method of.
test for ignition temperature, IEC 60079 4A 1970 First supplement to IEC 60079 4 1966 Electrical apparatus for. explosive gas atmospheres Part 4 Method of test for ignition temperature. IEC 60079 20 1996 Electrical apparatus for explosive gas atmospheres Part 20 Data for. flammable gases and vapours relating to the use of electrical apparatus. 2 Definitions and terms, For the purpose of this part of IEC 60079 the following definitions and terms apply. NOTE Where a definition appears in this clause and in IEC 60050 426 the definition given in this clause is. applicable, explosive atmosphere, mixture with air under atmospheric conditions of flammable substances in the form of gas. vapour mist or dust in which after ignition combustion spreads throughout the unconsumed. IEV 426 02 02 modified, explosive gas atmosphere, mixture with air under atmospheric conditions of flammable substances in the form of gas or. vapour in which after ignition combustion spreads throughout the unconsumed mixture. IEV 426 02 03 modified, NOTE Although a mixture which has a concentration above the upper explosive limit UEL is not an explosive.
gas atmosphere it can readily become so and in certain cases for area classification purposes it is advisable to. consider it as an explosive gas atmosphere, hazardous area. area in which an explosive gas atmosphere is present or may be expected to be present in. quantities such as to require special precautions for the construction installation and use of. IEV 426 03 01 modified, non hazardous area, area in which an explosive gas atmosphere is not expected to be present in quantities such. as to require special precautions for the construction installation and use of apparatus. International Standard IEC 60079 10 has been prepared by subcommittee 31J Classification of hazardous areas and installation requirements

Related Books

Tension between Traditional and Modern Teaching Learning

Tension between Traditional and Modern Teaching Learning

Tension between Traditional and Modern Teaching Learning Approaches in Ethiopian Primary Schools Derebssa Dufera Serbessa Addis Ababa University Abstract Whether a particular education system is of high or low quality can be judged in terms of input output and process Until recently however much discussion of educational quality is centered on only system inputs in terms of the provision

AA A A t r s8

AA A A t r s8

Boys constitute about 47 and girls 53 of the student population The College has grown with many enrolments both in the Junior and Senior schools The College draws students from as far as inner city Melbourne and several families in significant numbers have settled locally The school zone is growing faster and due to this the College has drawn most of the enrolments from the local

Study the Relationship between Self Esteem and Academic

Study the Relationship between Self Esteem and Academic

and academic achievement at boys and girls at high schools in Lamerd Research Method The objective of this study was to investigate the relationship between self esteem and academic achievement in high school students atLamerd city Based on the nature and method this research can be located in a descriptive correlational research

DG American Promise

DG American Promise

step particularly for families raising black boys Our aim for American Promise is to galvanize a national conversation about what it takes for parents educators and the com munity to help further the academic success and bolster the socio emotional health of our African American boys and to pro mote individual behavior change We hope that you will join us on this journey toward making

From the mDGs to SUStaiNable DeveloPmeNt For all

From the mDGs to SUStaiNable DeveloPmeNt For all

Lessons from 15 Years of Pr ac tice From the mDGs to SUStaiNable DeveloPmeNt For all November 2016 United Nations Development Programme From the mDGs to SuStainable Development For all leSSonS From 15 YearS oF practice ii contentS boxeS BOx 1 1 ENtrEPrENEUrShIP AmONg POOr rUrAl wOmEN IN NEPAl ENhANCED wIth UNDP SUPPOrt 17 BOx 2 1 SOmE ImPOrtANt OUtCOmES Of mDg CAmPAIgNINg 27 BOx 2 2 mDg

Lei sagnarmat er m li

Lei sagnarmat er m li

Raising Boys Achievement leiddi m a lj s a g an rangur drengja Ardleigh Green sk lanum m tti fyrst og fremst rekja til kennslua fer a sk lans Morris hefur haldi fj lda n mskei a fyrir kennara og stj rnendur Reykjav k og veri nokkrum sk lum til r gjafar vi r un n ms og kennslu Auk ess hefur fj ldi reykv skra kennara heims tt Ardleigh Green

REVIEW OF BEST PRACTICE IN PARENTAL ENGAGEMENT

REVIEW OF BEST PRACTICE IN PARENTAL ENGAGEMENT

Review of best practice in parental engagement Janet Goodall and John Vorhaus with the help of Jon Carpentieri Greg Brooks Rodie Akerman and Alma Harris This research report was commissioned before the new UK Government took office on 11 May 2010 As a result the content may not reflect current Government policy and may make reference to the Department for Children Schools and Families

S120 STEREO SPEAKERS HAUT PARLEURS ST R O S120

S120 STEREO SPEAKERS HAUT PARLEURS ST R O S120

S120 STEREO SPEAKERS HAUT PARLEURS ST R O S120 Complete Setup Guide Guide d installation complet

Doing business in Portugal PKF International

Doing business in Portugal PKF International

Sale of property land 8 PKF Doing Business in Portugal The Portuguese Government is committed to meet the Maastricht Convergence Criteria inter alia by increasing the internal product Foreign investment is most welcomed by the Government that has created the Business Development Agency AICEP to negotiate the terms and tax benefits available for investments exceeding 5 million

Portugal PKF International

Portugal PKF International

Portugal PKF Worldwide Tax Guide 2016 17 1 FOREWORD Resident corporations are subject to Portuguese corporate income tax IRC on their worldwide income Non resident companies with a permanent establishment in Portugal are liable for IRC

NATIONAL INSTITUTE OF INDUSTRIAL PROPERTY PORTUGAL

NATIONAL INSTITUTE OF INDUSTRIAL PROPERTY PORTUGAL

PCT Applicant s Guide National Phase National Chapter PT Page 1 21 November 2019 NATIONAL INSTITUTE OF INDUSTRIAL PROPERTY PORTUGAL AS DESIGNATED OR ELECTED OFFICE CONTENTS THE ENTRY INTO THE NATIONAL PHASE SUMMARY THE PROCEDURE IN THE NATIONAL PHASE ANNEXES Fees Annex PT I Power of attorney Annex PT II Deed of assignment Annex PT III List of