IEC_60079-2-2014_cor1-2015.pdf

IEC 60079-2:2014/COR1:2015 1 IEC 2015 INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION LECTROTECHNIQUE INTERNATIONALE _ IEC 60079-2 Edition 6.0 2014-07 Explosive atmospheres Part 2:Equipment protection by pressurized enclosure p IEC 60079-2 dition 6.0 2014-07 Atmosphres explosives Partie 2:Protection du matriel par enveloppe surpression interne p C O R R I G E N D U M 1 Corrections to the French version appear after the English text.Les corrections la version franaise sont donnes aprs le texte anglais.Foreword Add the following new table and text after the first table explaining the significance of changes between IEC 60079-2,Edition 6.0,2014 and IEC 60079-2,Edition 5.0,2007:The significance of changes between IEC 60079-2,Edition 6.0,2014 and IEC 61241-4,Edition 5.0,2007 are as listed below:Type Changes Clause in 61241-4 Minor and Editorial Changes Extension Major Technical Changes Removed type of protection“pD”.Included in 3.20,3.21 and 3.22 3.1 X Definition of pressurization now accommodates both gas and dust 3.3 X Definition of protective gas now accommodates both gas and dust 3.4 X Removed definition for an enclosure.Defined in IEC 60079-0 3.5 X Removed note in definition for pressurized enclosure.3.6 X Replaced definition of static pressurization with 60079-2 definition 3.7 X Removed definition for“pressurization with continuous flow of the protective gas”.Term not used in 61241-4 3.9 X Removed definition for“electrical apparatus”.Definition is covered in IEV 3.10 X Definition of ignition-capable apparatus now accommodates both gas and dust 3.11 X Removed definition for“self-revealing fault”.Term not used in 61241-4 3.12 X Removed definition for“opening”.Term not used in 61241-4 3.13 X Removed definition for“protective device”.These are mostly referred to as a“safety device”throughout 61241-4.3.14 X IEC 60079-2:2014-07/COR1:2015-07(en-fr)2 IEC 60079-2:2014/COR1:2015 IEC 2015 Type Changes Clause in 61241-4 Minor and Editorial Changes Extension Major Technical Changes Removed definition for“protected apparatus”.This was only used to address batteries which are now covered in Annex G and Annex H.3.17 X Replaced definition of“pressurization system”with 60079-2 definition 3.18 X Removed definition for“alternate(or auxiliary)source of supply of protective gas”.Term used is“second source of Supply.This is now addressed in 60079-2,9.1 3.19 X Removed definition for“zones in Area Classification”This definition is provided in 60079-10-2.3.20 X Removed definition for“zone 20 in Area Classification”.See above 3.21 X Removed definition for“zone 21 in Area Classification”.See above 3.22 X Removed definition for“zone 22 in Area Classification”.See above 3.23 X Removed Clause on“Pressurization principle”including sub-clauses.This information is covered by the definition of“Pressurization”,see 3.13 and other clauses in the standard.4 X Removed Clause on“Electrical performance of apparatus”.Safe performance of equipment is addressed by 60079-0,6.1 b)5.1 X Removed note about equipment with large surface areas subjected to pressures 1kPa may be subject to pressure vessel legislation.5.2 X Text on apertures is equivalently covered by 5.5 and 5.6 5.3 X Text on electrical connections is equivalently covered in 60079-0,clause 14.5.4 X Text on delaying opening of an enclosure because of internal hot surface is equivalently covered in clause 15.5.5 X Removed text on providing suitable amount of doors or covers to provide for effective removal of dust from the enclosure.The text in 61241-4 would not lend itself to consistent assessments from different CBs.5.5 X Text on temperature limits is equivalently covered in clause 6 and 60079-0,26.5.1.3.6 X Removed text on the responsibility of the manufacturer.Addressed in 60079-0.7.1 X Removed text on the responsibility of the user.Addressed in 60079-14.7.1 X Removed text that manufacturer shall provide instructions for cleaning the enclosure.Addressed in 60079-14.7.1 X Removed text requiring a safety device to operate when the pressure within the enclosure exceeds the permitted maximum pressure.It is the user responsibility to not exceed the rated maximum pressure.7.2 X Removed text requiring the isolation of the neutral conductor.Addressed in 60079-14.7.4 X Text on failure of pressurization is equivalently covered by clause 7&13.3.7.5 X Removed text on location of visible or audible alarms.Addressed in 60079-14.7.5.1 X Removed text requiring both disconnection and alarming for Zone 21 Db.Addressed in 60079-14.7.5.1.1 X Text on warning marking on doors and covers is equivalently covered in 5.3.6.7.5.1.2 X Removed text about providing means for removing oil or moisture.Addressed in 60079-14,13.1.6.9.1 X Removed text requiring the minimum overpressure be verified over a 5 minute period.It is not considered that this measurement is time dependent.10.4.1 X Removed text requiring the minimum overpressure be verified with 10.4.2 X IEC 60079-2:2014/COR1:2015 3 IEC 2015 Type Changes Clause