1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULNational Differences ForUL 60079-17Explosive Atmospheres Part 17: Electrical Installations Inspection and MaintenanceUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION
2、 WITHOUT PERMISSION FROM ULNational Differences ForUL 60079-17Explosive Atmospheres Part 17: Electrical Installations Inspection and MaintenanceFifth EditionEdition Date: MAY 12, 2017Adoption of IEC 60079-17, Explosive Atmospheres Part 17: Electrical Installations Inspectionand Maintenance (fifth ed
3、ition issued by IEC November 2013) as a new IEC-based UL standard,UL 60079-17 (IEC 60079-17:2013) with US Differences.This document provides a single listing of the National Differences included in the UL adoption ofthe corresponding IEC standard.All rights reserved. No part of this publication may
4、be reproduced, stored in a retrieval system, ortransmitted in any form by any means, electronic, mechanical photocopying, recording, or otherwisewithout prior permission of UL.UL provides this standards document as is without warranty of any kind, either expressed or implied,including but not limite
5、d to, the implied warranties of merchantability or fitness for any purpose.In no event will UL be liable for any special, incidental, consequential, indirect or similar damages,including loss of profits, lost savings, loss of data, or any other damages arising out of the use of or theinability to us
6、e this standards document, even if UL or an authorized UL representative has been advisedof the possibility of such damage. In no event shall ULs liability for any damage ever exceed the pricepaid for this standards document, regardless of the form of the claim.Users of the electronic versions of UL
7、s Standards for Safety agree to defend, indemnify, and hold ULharmless from and against any loss, expense, liability, damage, claim, or judgment (including reasonableattorneys fees) resulting from any error or deviation introduced while purchaser is storing an electronicStandard on the purchasers co
8、mputer system.Copyright 2017 Underwriters Laboratories Inc.MAY 12, 2017NATIONAL DIFFERENCES FOR UL 60079-172UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULPrefaceThis document provides a single listing of the technical National Differences in
9、cluded in the UL adoptionof the corresponding IEC standard.In its IEC-based standards, UL uses the notations indicated below to identify national difference type, andthese types are additionally noted in this document. The standard may not use all types of thesedeviations.D1 - These are deviations w
10、hich are based on basic safety principles and requirements, elimination ofwhich would compromise safety for U.S. consumers and users of products.D2 - These are deviations based on safety practices. These are deviations for IEC requirements that maybe acceptable, but adopting the IEC requirements wou
11、ld require considerable retesting or redesign on themanufacturers part.DC - These are deviations based on the component standards and will not be deleted until a particularcomponent standard is harmonized with the IEC component standard.DE - These are deviations based on editorial comments or correc
12、tions.DR - These are deviations based on the national regulatory requirements.Each national difference contains a description of what the national difference entails. Typically one of thefollowing words is used to explain how the text of the national difference is to be applied to the base IECtext:A
13、ddition / Add - An addition entails adding a complete new numbered clause, subclause, table, figure,or annex. Addition is not meant to include adding select words to the base IEC text.Deletion / Delete - A deletion entails complete deletion of an entire numbered clause, subclause, table,figure, or a
14、nnex without any replacement text.Modification / Modify - A modification is an altering of the existing base IEC text such as the addition,replacement or deletion of certain words or the replacement of an entire clause, subclause, table, figure,or annex of the base IEC text.MAY 12, 2017 NATIONAL DIF
15、FERENCES FOR UL 60079-17 3UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULNational Differences1DV DR Modification of Clause 1 to replace with the following:This part of the IEC 60079 standard series applies to users and covers factors directly
16、related to the inspection and maintenance of electrical installations within hazardous areasonly, where the hazard may be caused by flammable gases, vapours, mists, dusts, fibresor flyings.It does not include:other fundamental installation and inspection requirements for electrical installations;the
17、 verification of electrical equipment;the repair and reclamation of explosion protected equipment (see IEC 60079-19).This standard supplements the requirements of IEC 60364-6 NFPA 70B.In the case of dusts, fibres or flyings the level of housekeeping may influence theinspection and maintenance requir
18、ements.This standard is intended to be applied where there can be a risk due to the presence ofexplosive gas or dust mixtures with air or combustible dust layers under normalatmospheric conditions. It does not apply to:underground mining areas,dusts of explosives that do not require atmospheric oxyg
19、en for combustion,pyrophoric substances.Where references are made to other IEC 60079 standards, the reference requirementsfound in these standards apply as modified by any applicable U.S. National Differences.2DV DR Modification of Clause 2 references to replace with the following:IEC 60079-0, Explo
20、sive atmospheres Part 0: Equipment General requirementsIEC 60079-1, Explosive atmospheres Part 1: Equipment protection by flameproof enclosures dIEC 60079-2, Explosive atmospheres Part 2: Equipment protection by pressurized enclosurespIEC 60079-7, Explosive atmospheres Part 7: Equipment protection b
21、y increased safety “e”IEC 60079-10-1, Explosive atmospheres Part 10-1: Classification of areas Explosive gasatmospheresMAY 12, 2017NATIONAL DIFFERENCES FOR UL 60079-174UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULIEC 60079-10-2, Explosive a
22、tmospheres Part 10-2: Classification of areas Combustible dustatmospheresIEC 60079-11, Explosive atmospheres Part 11: Equipment protection by intrinsic safety iIEC 60079-14, Explosive atmospheres Part 14: Electrical installations design, selection anderectionIEC 60079-15, Explosive atmospheres Part
23、15: Equipment protection by type of protection nIEC 60079-19, Explosive atmospheres Part 19: Equipment repair, overhaul and reclamationIEC 60079-31, Explosive atmospheres Part 31: Equipment dust ignition protection by enclosuretIEC 60364-6, Low-voltage electrical installations Part 6: VerificationIE
24、C 61241-4, Electrical apparatus for combustible dust atmospheres Part 4: Type of protectionpDISA 60079-10-1, Explosive atmospheres Part 10-1: Classification of areas Explosive gasatmospheresISA 60079-10-2, Explosive atmospheres Part 10-2: Classification of areas Combustible dustatmospheresISA 60079-
25、29-1 (12.13.01), Explosive atmospheres Part 29-1: Gas Detectors PerformanceRequirements for Detectors for Flammable GasesNFPA 70, National Electrical CodeNFPA 70B, Recommended Practice for Electrical Equipment MaintenanceNFPA 70E, Standard for Electrical Safety in the WorkplaceUL 121203 Portable Ele
26、ctronic products suitable for use in Class I and II, Division 2, Class I, Zone2 and Class III, Division 1 and 2 hazardous (classified) locationsUL 60079-0 Explosive atmospheres Part 0: Equipment General requirementsUL 60079-1 Explosive atmospheres Part 1: Equipment protection by flameproof enclosure
27、s dUL 60079-2 Explosive atmospheres Part 2: Equipment protection by pressurized enclosures pUL 60079-7 Explosive atmospheres Part 7: Equipment protection by increased safety eUL 60079-11 Explosive atmospheres Part 11: Equipment protection by intrinsic safety iUL 60079-15 Explosive atmospheres Part 1
28、5: Equipment protection by type of protection nUL 60079-31 Explosive atmospheres Part 31: Equipment dust ignition protection by enclosuretMAY 12, 2017 NATIONAL DIFFERENCES FOR UL 60079-17 5UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM UL3DV DR
29、 Modification of the first paragraph and NOTE, to replace with the following:For the purposes of this document, the terms and definitions given in IEC 60079-0 UL60079-0 and the following apply.NOTE Additional definitions applicable to explosive atmospheres can be found in IEC 60050-426.3.4DV DR Modi
30、fication of Clause 3.4 to add the following Note 2 after Note 1:Note 2 to entry: The National Electrical Code defines hazardous areas as hazardous (classified) locations.3.9DV DR Modification of Clause 3.9 to add the following Note:Note to entry: The National Electrical Code refers to non-hazardous
31、areas as unclassified locations.3.15ADV D1 Addition of Clause 3.15:gas free work permit (GFWP)permit, resulting from approval by an authorized person under the application of a defineddocumented management work process, stating that work involving potential ignitionsources may be performed in a haza
32、rdous (classified) location by ensuring that theatmosphere is free of ignitable concentrations of flammable gases or vapors4.1DV DE Modification of Clause 4.1 to replace with the following:For the purposes of inspection and maintenance, up-to-date documentation (verificationdossier) including any mo
33、dification records, of the following items shall be available:a) zone classification of areas and, if included, the equipment protection level (EPL)required for each location (see IEC ISA 60079-10-1 and IEC ISA 60079-10-2),b) for gases: equipment group (IIA, IIB or IIC) and temperature class require
34、ments,c) EPL (equipment protection level), when provided,c d) for dusts: equipment group (IIIA, IIIB or IIIC) and maximum surface temperaturerequirements,d e) equipment characteristics e.g. temperature ratings, type of protection, IP rating,corrosion resistance,e f) records sufficient to enable the
35、explosion protected equipment to be maintained inaccordance with its type of protection (see IEC 60079-14 NFPA 70), (for example list andlocation of equipment, spares, certificates, technical information),f g) copies of previous inspection records,g h) copy of the additional initial inspection recor
36、ds as detailed in IEC 60079-14.NOTE The EPL (or Equipment Protection Level) may appear in the product marking and documentation. EPLs aredesignated as G for gas, D for dust, or M for mining and are then followed by a letter (a, b, or c) to give the usera better understanding as to whether the equipm
37、ent provides either (a) a very high, (b) a high, or (c) anMAY 12, 2017NATIONAL DIFFERENCES FOR UL 60079-176UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULenhanced level of protection against ignition of an explosive atmosphere. For example, a
38、n Class I, Zone 1 AExd IIC T3 luminaire (which is suitable by protection concept for an application in Zone 1) may additionally bemarked with an EPL or Gb to indicate that it was provided with a high level of protection, such as Class I, Zone1 AEx d IIC T3 Gb.Requirements for other documentation tha
39、t may be necessary are provided in IEC60079-14 and IEC 60079-19.4.2DV D2 Modification of Clause 4.2 to replace with the following:The inspection and maintenance of installations covered by this standard shall should becarried out only by experienced personnel, whose training has included instruction
40、 on thevarious types of protection and installation practices, the requirements of this standard,the relevant national regulations/company rules applicable to the installation and on thegeneral principles of area classification (see Annex B). Appropriate continuing educationor training shall should
41、be undertaken by personnel on a regular basis. Evidence of therelevant experience and training claimed shall should be documented and available.4.3.1.1DV.1 DE Modification of Clause 4.3.1.1, first paragraph to replace with thefollowing:4.3.1.1DV.1.1 Before a plant also referred to as facility or equ
42、ipment is brought intoservice, it shall be given an initial inspection. As part of the plant commissioning and startup procedures, initial inspection and other additional requirements are provided in IEC60079-14.4.3.1.2DV.1 D2 Modification of Clause 4.3.1.2, second paragraph to replace with thefollo
43、wing:4.3.1.2DV.1.1 The inventory and identification tagging method used for managingexplosion protected equipment shall should be capable of tracking the replacement ofequipment with replacement or repaired equipment, which may have different certificationmarkings and details to the original equipme
44、nt.4.3.1.3DV DR Modification of Clause 4.3.1.3, NOTE to replace with the following:NOTE This assessment is intended to apply to items in an installation that predate any requirement for the useof certified identified (see NFPA 70) electrical equipment in hazardous areas.MAY 12, 2017 NATIONAL DIFFERE
45、NCES FOR UL 60079-17 7UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM UL4.3.3DV.1 D1 Modification of Clause 4.3.3, first paragraph to replace with the following:4.3.3DV.1.1 Types of inspections include:a) Initial inspections used to check that t
46、he selected type of protection and its installationare appropriate based on detailed inspections. The requirements are covered in IEC60079-14. They are to be detailed inspections in accordance with Tables 1, 2, and 3 ormodified tables in accordance with 5.7 as appropriate.NOTE A full initial inspect
47、ion is not required if an equivalent inspection has been performed by the manufacturerand it is unlikely that the installation process will have affected those items inspected by the manufacturer. Forexample, an initial detailed inspection of internal flamepaths of a flameproof motor or the internal
48、 joints of a Zone21 AEx tb motor is not required; however, the terminal housing cover, which would have been removed tofacilitate connection of the field wiring, should be inspected after as part of the installation process.b) Periodic inspections which may be visual, close or detailed in accordance
49、 with Tables1, 2 and 3, or modified tables in accordance with 5.7, as appropriate.c) Sample inspections which may be visual, close or detailed in accordance with Tables 1,2 and 3, or modified tables in accordance with 5.7, as appropriate. The size andcomposition of all samples shall be determined with regard to the purpose of theinspection.Sample inspections should not be expected to reveal faults of a random nature,such as loose connections, but should be used to monitor the ef
