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EN 50303:2000
Current
The latest, up-to-date edition.
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Group I, Category M1 equipment intended to remain functional in atmospheres endangered by firedamp and/or coal dust
28-07-2000
Foreword
Introduction
1 Scope
2 Normative references
3 Definitions
4 General
5 Category M1 equipment having the requisite level of
protection in the event of two faults occurring
independently of each other
6 Category M1 equipment having the requisite level of
protection using a second independent means
7 Requirements for Category M1 flammable gas detectors
with hot wire or hot pellistor sensing heads
8 Requirements for Category M1 systems
9 Type testing
10 Marking requirements
11 Instructions
1.1This standard specifies the design, construction, testing and marking requirements for Group I, Category M1 equipment intended to remain functional in underground parts of mines, as well as those parts of surface installations of such mines endangered by firedamp and/or coal dust clouds under normal atmospheric conditions of pressures ranging from 0,8 bar to 1,1 bar and temperatures ranging from 20 °C to + 60 °C.
1.2It applies to all electrical and non-electrical equipment capable of causing an explosion through its own potential source of ignition.
1.3It also applies to cables, pipes and optical fibres, when such items are used to carry energy sources and form part of equipment intended to remain functional in an atmosphere endangered by firedamp and/or coal dust.
1.4It does not apply to category M1 Miners' Caplights, which are dealt with in prEN 62013-1 (in preparation).
NOTE 1As the energy needed to ignite a coal dust /air cloud is in excess of 600 times* that needed to ignite a firedamp /air mixture, this standard assumes that provided intrinsically safe 'ia' circuits are constructed to be safe in an explosive atmosphere of firedamp /air, then such circuits are not capable of directly igniting an explosive atmosphere of coal dust/air.
* Based on tests performed by several member state laboratories. Verified at the UK Health & Safety Laboratories, Buxton - Report by Dr P. Tolson, dated 9 August 1995 - "Ignition of coal dust/air mixtures using a modified IEC spark test apparatus".
NOTE 2In designing equipment for operation in explosive atmospheric conditions other than those given in 1.1 above, this standard may be used as a guide. In such cases, additional testing is recommended to allow the manufacturer to be able to demonstrate that the equipment is suitable for the exceptional conditions of use.
NOTE 3When an explosive firedamp atmosphere occurs in the underground workings of a mine, or at a surface installation, it is imperative that the ignition risk be kept to a minimum. Member State Governments may therefore prohibit the continued use of certain Category M1 equipment in an atmosphere endangered by firedamp and/or coal dust if it is not necessary for it to remain functional for the protection of workers**.
** This has its origin in clause 5.1 of the proposals to the Governments of members States adopted by the Safety and Health Commission for Mining and Other Extractive Industries (SHCMOEI) at its meeting on 29.10.1986. Document No 6374/13/82 - "Electrical apparatus and systems for use when the concentration of firedamp exceeds the statutory limit for electricity".
Committee |
CLC/TC 31
|
DocumentType |
Standard
|
PublisherName |
European Committee for Standards - Electrical
|
Status |
Current
|
Standards | Relationship |
NBN EN 50303 : 2001 | Identical |
VDE 0170-12-2 : 2001-05 | Identical |
I.S. EN 50303:2001 | Identical |
SN EN 50303 : 2000 | Identical |
NEN EN 50303 : 2000 | Identical |
GOST R EN 50303 : 2009 | Identical |
UNE-EN 50303:2001 | Identical |
DIN EN 50303 : 2001-05 | Identical |
CEI EN 50303 : 2001 | Identical |
BS EN 50303:2000 | Identical |
NF EN 50303 : 2000 | Identical |
PN EN 50303 : 2004 | Identical |
PREN 1127-1 : DRAFT 2017 | EXPLOSIVE ATMOSPHERES - EXPLOSION PREVENTION AND PROTECTION - PART 1: BASIC CONCEPTS AND METHODOLOGY |
17/30365866 DC : 0 | BS EN 1127-1 - EXPLOSIVE ATMOSPHERES - EXPLOSION PREVENTION AND PROTECTION - PART 1: BASIC CONCEPTS AND METHODOLOGY |
BS EN 13463-1:2009 | Non-electrical equipment for use in potentially explosive atmospheres Basic method and requirements |
UNE-EN 1127-1:2012 | Explosive atmospheres - Explosion prevention and protection - Part 1: Basic concepts and methodology |
BS EN 13463-3:2005 | Non-electrical equipment for use in potentially explosive atmospheres Protection by flameproof enclosure \'d\' |
DIN EN 1127-2:2002-07 | EXPLOSIVE ATMOSPHERES - EXPLOSION PREVENTION AND PROTECTION - PART 2: BASIC CONCEPTS AND METHODOLOGY FOR MINING |
EN 13463-1:2009 | Non-electrical equipment for use in potentially explosive atmospheres - Part 1: Basic method and requirements |
EN 13463-6:2005 | Non-electrical equipment for use in potentially explosive atmospheres - Part 6: Protection by control of ignition source 'b' |
EN 13463-3:2005 | Non-electrical equipment for use in potentially explosive atmospheres - Part 3: Protection by flameproof enclosure 'd' |
EN ISO 80079-37:2016 | Explosive atmospheres - Part 37: Non-electrical equipment for explosive atmospheres - Non-electrical type of protection constructional safety 'c', control of ignition sources 'b', liquid immersion 'k' (ISO 80079-37:2016) |
CEI EN 50394-1 : 2005 | ELECTRICAL APPARATUS FOR POTENTIALLY EXPLOSIVE ATMOSPHERES - GROUP 1 - INSTRINSICALLY SAFE SYSTEMS - PARTE 1: COSTRUZIONI E PROVE |
I.S. EN 13463-5:2011 | NON-ELECTRICAL EQUIPMENT INTENDED FOR USE IN POTENTIALLY EXPLOSIVE ATMOSPHERES - PART 5: PROTECTION BY CONSTRUCTIONAL SAFETY 'C' |
BS EN ISO 80079-37:2016 | Explosive atmospheres Non-electrical equipment for explosive atmospheres. Non-electrical type of protection constructional safety \'\'c\'\', control of ignition sources \'\'b\'\', liquid immersion \'\'k\'\' |
I.S. EN 13463-6:2005 | NON-ELECTRICAL EQUIPMENT FOR USE IN POTENTIALLY EXPLOSIVE ATMOSPHERES - PART 6: PROTECTION BY CONTROL OF IGNITION SOURCE 'B' |
12/30270980 DC : 0 | BS EN 1127-2 - EXPLOSIVE ATMOSPHERES - EXPLOSION PREVENTION AND PROTECTION - PART 2: BASIC CONCEPTS AND METHODOLOGY FOR MINING |
I.S. EN 50628:2016 | ERECTION OF ELECTRICAL INSTALLATIONS IN UNDERGROUND MINES |
BS EN 1127-1:2011 | Explosive atmospheres. Explosion prevention and protection Basic concepts and methodology |
I.S. EN 50020:2002 | ELECTRICAL APPARATUS FOR POTENTIALLY EXPLOSIVE ATMOSPHERES - INTRINSIC SAFETY "I" |
DIN EN 1127-1:2011-10 | EXPLOSIVE ATMOSPHERES - EXPLOSION PREVENTION AND PROTECTION - PART 1: BASIC CONCEPTS AND METHODOLOGY |
DIN EN 13463-5:2011-10 | NON-ELECTRICAL EQUIPMENT INTENDED FOR USE IN POTENTIALLY EXPLOSIVE ATMOSPHERES - PART 5: PROTECTION BY CONSTRUCTIONAL SAFETY 'C' |
I.S. EN 1127-2:2014 | EXPLOSIVE ATMOSPHERES - EXPLOSION PREVENTION AND PROTECTION - PART 2: BASIC CONCEPTS AND METHODOLOGY FOR MINING |
DIN EN 13463-5:2004-03 | NON-ELECTRICAL EQUIPMENT INTENDED FOR USE IN POTENTIALLY EXPLOSIVE ATMOSPHERES - PART 5: PROTECTION BY CONSTRUCTIONAL SAFETY 'C' |
DIN EN 13463-1:2009-07 | NON-ELECTRICAL EQUIPMENT FOR USE IN POTENTIALLY EXPLOSIVE ATMOSPHERES - PART 1: BASIC METHOD AND REQUIREMENTS |
DIN EN 13463-6:2005-07 | NON-ELECTRICAL EQUIPMENT FOR USE IN POTENTIALLY EXPLOSIVE ATMOSPHERES - PART 6: PROTECTION BY CONTROL OF IGNITION SOURCE 'B' |
BS EN 50394-1:2004 | Electrical apparatus for potentially explosive atmospheres. Group I. Intrinsically safe systems Construction and testing |
I.S. EN 13463-1:2009 | NON-ELECTRICAL EQUIPMENT FOR USE IN POTENTIALLY EXPLOSIVE ATMOSPHERES - PART 1: BASIC METHOD AND REQUIREMENTS |
DIN EN ISO 80079-37:2016-12 | Explosive atmospheres - Part 37: Non-electrical equipment for explosive atmospheres - Non-electrical type of protection constructional safety "c", control of ignition sources "b", liquid immersion "k" (ISO 80079-37:2016) |
I.S. EN 1127-1:2011 | EXPLOSIVE ATMOSPHERES - EXPLOSION PREVENTION AND PROTECTION - PART 1: BASIC CONCEPTS AND METHODOLOGY |
I.S. EN 50394-1:2004 | ELECTRICAL APPARATUS FOR POTENTIALLY EXPLOSIVE ATMOSPHERES - GROUP 1 - INTRINSICALLY SAFE SYSTEMS; PART 1: CONSTRUCTION AND TESTING |
DIN EN 1710:2008-08 | EQUIPMENT AND COMPONENTS INTENDED FOR USE IN POTENTIALLY EXPLOSIVE ATMOSPHERES IN UNDERGROUND MINES |
DIN EN 13463-3:2005-07 | NON-ELECTRICAL EQUIPMENT FOR USE IN POTENTIALLY EXPLOSIVE ATMOSPHERES - PART 3: PROTECTION BY FLAMEPROOF ENCLOSURE 'D' |
DIN EN 1127-2:2014-09 | EXPLOSIVE ATMOSPHERES - EXPLOSION PREVENTION AND PROTECTION - PART 2: BASIC CONCEPTS AND METHODOLOGY FOR MINING |
I.S. EN 13463-3:2005 | NON-ELECTRICAL EQUIPMENT FOR USE IN POTENTIALLY EXPLOSIVE ATMOSPHERES - PART 3: PROTECTION BY FLAMEPROOF ENCLOSURE 'D' |
UNE-EN 13463-5:2013 | Non-electrical equipment intended for use in potentially explosive atmospheres - Part 5: Protection by constructional safety 'c' |
UNI EN 13463-1 : 2009 | NON-ELECTRICAL EQUIPMENT FOR USE IN POTENTIALLY EXPLOSIVE ATMOSPHERES - PART 1: BASIC METHOD AND REQUIREMENTS |
UNI EN 13463-5 : 2011 | NON-ELECTRICAL EQUIPMENT INTENDED FOR USE IN POTENTIALLY EXPLOSIVE ATMOSPHERES - PART 5: PROTECTION BY CONSTRUCTIONAL SAFETY 'C' |
EN 50020:2002 | Electrical apparatus for potentially explosive atmospheres - Intrinsic safety 'i' |
UNI EN 1127-2 : 2014 | EXPLOSIVE ATMOSPHERES - EXPLOSION PREVENTION AND PROTECTION - PART 2: BASIC CONCEPTS AND METHODOLOGY FOR MINING |
UNI EN 1710 : 2008 | EQUIPMENT AND COMPONENTS INTENDED FOR USE IN POTENTIALLY EXPLOSIVE ATMOSPHERES IN UNDERGROUND MINES |
03/300203 DC : DRAFT FEB 2003 | EN 50394-1 - ELECTRICAL APPARATUS FOR POTENTIALLY EXPLOSIVE ATMOSPHERES - GROUP 1: INTRINSICALLY SAFE SYSTEMS - PART 1: CONSTRUCTION AND TESTING |
BS EN 50020:2002 | Electrical apparatus for potentially explosive atmospheres. Intrinsic safety \'i\' |
I.S. EN ISO 80079-37:2016 | EXPLOSIVE ATMOSPHERES - PART 37: NON-ELECTRICAL EQUIPMENT FOR EXPLOSIVE ATMOSPHERES - NON-ELECTRICAL TYPE OF PROTECTION CONSTRUCTIONAL SAFETY 'C', CONTROL OF IGNITION SOURCES 'B', LIQUID IMMERSION 'K' (ISO/DIS 80079-37:2014) |
UNE-EN ISO 80079-37:2018 | Explosive atmospheres - Part 37: Non-electrical equipment for explosive atmospheres - Non-electrical type of protection constructional safety 'c', control of ignition sources 'b', liquid immersion 'k' (ISO 80079-37:2016) |
BS EN 1127-1:2019 | Explosive atmospheres. Explosion prevention and protection Basic concepts and methodology |
BS EN 13463-5:2011 | Non-electrical equipment intended for use in potentially explosive atmospheres Protection by constructional safety \'c\' |
BS EN 50628:2016 | Erection of electrical installations in underground mines |
BS EN 13463-6:2005 | Non-electrical equipment for potentially explosive atmospheres Protection by control of ignition source \'b\' |
BS EN 1127-2:2014 | Explosive atmospheres. Explosion prevention and protection Basic concepts and methodology for mining |
ISO 80079-37:2016 | Explosive atmospheres Part 37: Non-electrical equipment for explosive atmospheres Non-electrical type of protection constructional safety 'c', control of ignition sources 'b', liquid immersion 'k' |
BS EN 1710 : 2005 | EQUIPMENT AND COMPONENTS INTENDED FOR USE IN POTENTIALLY EXPLOSIVE ATMOSPHERES IN UNDERGROUND MINES |
UNE-EN 13463-1:2011 | Non-electrical equipment for use in potentially explosive atmospheres - Part 1: Basic method and requirements |
EN 1710:2005+A1:2008/AC:2010 | EQUIPMENT AND COMPONENTS INTENDED FOR USE IN POTENTIALLY EXPLOSIVE ATMOSPHERES IN UNDERGROUND MINES |
DIN EN ISO 80079-37 E : 2016 | EXPLOSIVE ATMOSPHERES - PART 37: NON-ELECTRICAL EQUIPMENT FOR EXPLOSIVE ATMOSPHERES - NON-ELECTRICAL TYPE OF PROTECTION CONSTRUCTIONAL SAFETY 'C', CONTROL OF IGNITION SOURCES 'B', LIQUID IMMERSION 'K' (ISO 80079-37:2016) |
09/30199364 DC : 0 | BS EN 13463-5 - NON-ELECTRICAL EQUIPMENT INTENDED FOR USE IN POTENTIALLY EXPLOSIVE ATMOSPHERES - PART 5: PROTECTION BY CONSTRUCTIONAL SAFETY 'C' |
12/30243459 DC : 0 | BS ISO/IEC 80079-37 - EXPLOSIVE ATMOSPHERES - PART 37: NON-ELECTRICAL EQUIPMENT FOR USE IN EXPLOSIVE ATMOSPHERES - NON-ELECTRICAL TYPE OF PROTECTION CONSTRUCTIONAL SAFETY 'CH', CONTROL OF IGNITION SOURCES 'BH', LIQUID IMMERSION 'KH' |
07/30160767 DC : 0 | BS EN 13463-1 - NON-ELECTRICAL EQUIPMENT FOR USE IN POTENTIALLY EXPLOSIVE ATMOSPHERES - PART 1: BASIC METHOD AND REQUIREMENTS |
PREN 13463-5 : DRAFT 2009 | NON-ELECTRICAL EQUIPMENT INTENDED FOR USE IN POTENTIALLY EXPLOSIVE ATMOSPHERES - PART 5: PROTECTION BY CONSTRUCTIONAL SAFETY 'C' |
UNI EN 1127-1 : 2011 | EXPLOSIVE ATMOSPHERES - EXPLOSION PREVENTION AND PROTECTION - PART 1: BASIC CONCEPTS AND METHODOLOGY |
PREN 1127-2 : DRAFT 2012 | EXPLOSIVE ATMOSPHERES - EXPLOSION PREVENTION AND PROTECTION - PART 2: BASIC CONCEPTS AND METHODOLOGY FOR MINING |
EN 1127-2:2014 | Explosive atmospheres - Explosion prevention and protection - Part 2: Basic concepts and methodology for mining |
EN 50394-1:2004 | Electrical apparatus for potentially explosive atmospheres - Group I - Intrinsically safe systems - Part 1: Construction and testing |
EN 1127-1:2011 | Explosive atmospheres - Explosion prevention and protection - Part 1: Basic concepts and methodology |
EN 50628:2016 | Erection of electrical installations in underground mines |
EN 13463-5:2011 | Non-electrical equipment intended for use in potentially explosive atmospheres - Part 5: Protection by constructional safety 'c' |
EN 50020:2002 | Electrical apparatus for potentially explosive atmospheres - Intrinsic safety 'i' |
EN 50017:1998 | Electrical apparatus for potentially explosive atmospheres - Powder filling "q" |
EN 50019:2000/corrigendum Apr. 2003 | ELECTRICAL APPARATUS FOR POTENTIALLY EXPLOSIVE ATMOSPHERES - INCREASED SAFETY "E" |
EN 50018 : 2000 AMD 1 2002 | ELECTRICAL APPARATUS FOR POTENTIALLY EXPLOSIVE ATMOSPHERES - FLAMEPROOF ENCLOSURE "D" |
PREN 13463-3 : DRAFT 2002 | NON-ELECTRICAL EQUIPMENT FOR POTENTIALLY EXPLOSIVE ATMOSPHERES - PART 3: PROTECTION BY FLAMEPROOF ENCLOSURE 'D' |
PREN 13463-5 : DRAFT 2009 | NON-ELECTRICAL EQUIPMENT INTENDED FOR USE IN POTENTIALLY EXPLOSIVE ATMOSPHERES - PART 5: PROTECTION BY CONSTRUCTIONAL SAFETY 'C' |
EN 60529:1991/AC:2016-12 | DEGREES OF PROTECTION PROVIDED BY ENCLOSURES (IP CODE) (IEC 60529 EDITION 2.2 CORRIGENDUM 2:2015) |
EN 50016:2002 | Electrical apparatus for potentially explosive atmospheres - Pressurized apparatus "p" |
EN 50028:1987 | Electrical apparatus for potentially explosive atmospheres - Encapsulation 'm' |
EN 50014:1997/A2:1999 | ELECTRICAL APPARATUS FOR POTENTIALLY EXPLOSIVE ATMOSPHERES - GENERAL REQUIREMENTS |
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