8/20/2019 Hazardous-Locations-Poster_2014.pdf
1/1
HZL 0314
ATEX & IECExNORTH AMERICA
Contact Intertek with questions about Hazardous Locations &
Explosive Atmospheres testing and [email protected]
1-800-WORLDLAB (967-5352) www.intertek.com/hazardous-locations
Hazardous Locations & Explosive AtmospheresGuide to
Equipment Certification Requirements
Typical North American MarkingemehcSenoZemehcSnoisiviD
Class I Zone 0 AEx ia IIC T4 Ga
HazardClass
ProtectionConcept
Code
AreaClassication
Approved toUS Standards
Class I Division 1 Groups A&B T4
Temperature Class
Gas Group
Hazard
Class
Area
ClassicationTemperature
Class
Gas
Group EquipmentProtection
Level
NORTH AMERICA and ATEX & IECEx
® ®
_
Protection Concepts [NEC & CEC ]
Electrical Equipment for Flammable Gas, Vapors and Mist - Class
I
GeneralRequirements AEx
Ex
USUSCA
Class IClass IClass I
Division 1 & 2Division 1 & 2Division 1 & 2
FM 3600ISA 60079-0CSA C22.2 No. 60079-0
IncreasedSafety
AEx e (Gb)Ex e (Gb)
USCA
Class IClass I
Zone 1Zone 1
ISA 60079-7CSA C22.2 No. 60079-7
No arcs, sparksor hot surfaces
Non-IncendiveNINI
USCA
Class IClass I
Division 2Division 2
ISA 12.12.01/FM 3611CSA C22.2 No. 213
Non-SparkingAEx nA (Gc)Ex nA (Gc)
USCA
Class IClass I
Zone 2Zone 2
ISA 60079-15CSA C22.2 No. 60079-15
Explosion-proof XPXP
USCA
Class IClass I
Division 1Division 1
UL 1203CSA C22.2 No. 30
Contain theexplosion andextinguish theame
Flame-proof AEx d (Gb)Ex d (Gb)
USCA
Class IClass I
Zone 1Zone 1
ISA 60079-1CSA C22.2 No. 60079-1
Powder FilledAEx q (Gb)
Ex q (Gb)
US
CA
Class I
Class I
Zone 1
Zone 1
ISA 60079-5
CSA C22.2 No. 60079-5
Enclosed Break AEx nC (Gc)Ex nC (Gc)
USCA
Class IClass I
Zone 2Zone 2
ISA 60079-15CSA C22.2 No. 60079-15
Intrinsic Safety
ISISAEx ia (Ga)AEx ib (Gb)AEx ic (Gc)Ex ia (Ga)Ex ib (Gb)
USCAUSUSUSCACA
Class IClass IClass IClass IClass IClass IClass I
Division 1Division 1Zone 0Zone 1Zone 2Zone 0Zone 1
UL 913 / FM 3610CSA C22.2 No. 157ISA 60079-11ISA 60079-11ISA
60079-11CSA C22.2 No. 60079-11CSA C22.2 No. 60079-11
Limit energy of sparks andsurfacetemperature
Limited Energy CSA C22.2 No. 60079-15
Pressurized
Type X Type X Type Y Type Y Type Z Type ZAEx px (Gb)Ex px
(Gb)AEx py (Gb)Ex py (Gb)AEx pz (Gc)Ex pz (Gc)
USCAUSCAUSCAUSCAUSCAUSCA
Class IClass IClass IClass IClass IClass IClass IClass IClass
IClass IClass IClass I
Division 1Division 1Division 1Division 1Division 2Division 2Zone
1Zone 1Zone 1Zone 1Zone 2Zone 2
NFPA 496 (FM 3620)NFPA 496NFPA 496 (FM 3620)NFPA 496NFPA 496 (FM
3620)NFPA 496ISA 60079-2CSA C22.2 No. 60079-2ISA 60079-2CSA C22.2
No. 60079-2ISA 60079-2CSA C22.2 No. 60079-2
Keepammable gasout
RestrictedBreathing
AEx nR (Gc)Ex nR (Gc)
USCA
Class IClass I
Zone 2Zone 2
ISA 60079-15CSA C22.2 No. 60079-15
Encapsulation
AEx ma (Ga)
AEx mc (Gc)Ex m
AEx mb (Gb)US
USCA
USClass I
Class IClass I
Class IZone 0
Zone 2Zone 1
Zone 1ISA 60079-18
ISA 60079-18CSA C22.2 No. 60079-18
ISA 60079-18
Oil ImmersionAEx o (Gb)Ex o (Gb)
USCA
Class IClass I
Zone 1Zone 1
ISA 60079-6CSA C22.2 No. 60079-6
Electrical Equipment for Combustible Dust - Class II & Class
III
GeneralRequirements
Ex
USCAUSUS
Class IIClass IIClass III
Division 1 & 2Division 1 & 2Division 1 & 2Zone 20,
21, 22
FM 3600CSA C22.2 No. 25FM 3600ISA 60079-0
Dust-Ignitionproof CA
Class IIClass II
Division 1Division 1
UL 1203CSA C22.2 No. 25
Keepcombustibledust out
Dust ProtectedCA
Class IIClass II
Division 2Division 2
ISA 12.12.01 / FM 3611CSA C22.2 No. 25
Enclosure AEx ta (Da)AEx tb (Db)AEx tc (Dc)
USUSUSCA
CA
Class II
Class III
Zone 20Zone 21Zone 22Division 1
Division 1
ISA 60079-31ISA 60079-31ISA 60079-31CSA C22.2 No. 60079-31
CSA C22.2 No. 60079-31
Fiber & FlyingProtection
USCA
Class IIIClass III
Division 1 & 2Division 1 & 2
UL 1203 / ISA 12.12.01CSA C22.2 No. 25
Encapsulation
AEx maD
AEx mbD
US
US
Zone 20
Zone 21
ISA 61241-18
ISA 61241-18
Pressurization
Type X Type X Type Y Type Y Type Z Type ZAEx pD
USCAUSCAUSCAUS
Class IIClass IIClass IIClass IIClass IIClass IIClass II
Division 1Division 1Division 1Division 1Division 2Division 2Zone
21
NFPA 496 (FM 3620)NFPA 496NFPA 496 (FM 3620)NFPA 496NFPA 496 (FM
3620)NFPA 496ISA 61241-2
Intrinsic Safety
ISAEx iaDAEx ibDIS
USUSUSUS
Class II
Class III
Division 1Zone 20Zone 21Division 1
UL 913 / FM 3610ISA 61241-11ISA 61241-11UL 913 / FM 3610
Limit energy of sparks andsurfacetemperature
Ex taEx ta
Division 2Division 2
Division 1
Ex tbClass IIClass III
Class IIICA CSA C22.2 No. 60079-31Ex tb CA Class II Division 1
CSA C22.2 No. 60079-31
Ex tc CA CSA C22.2 No. 60079-31CSA C22.2 No. 60079-31Ex tc
CA
2
2
2
1
Type ofProtection
Code (EPL) Country Class Division/Zone Standard Basic Conceptof
Protection
_
___
Class IIClass IIClass II
__
Ex ma CA
Class II
Class IIClass II Division 1
Ex ma
Ex mb
Ex mb
CA Class III Division 1CA Class II Division 1
CSA C22.2 No. 60079-18CSA C22.2 No. 60079-18CSA C22.2 No.
60079-18
CA Class III Division 1 CSA C22.2 No. 60079-18
Ex mc CA Class II Division 2 CSA C22.2 No. 60079-18Ex mc CA
Class III Division 2 CSA C22.2 No. 60079-18
Class IIClass II
ExnL(Gc) CA Class I Zone 2
Note1:
Forassociatedintrinsicallysafeapparatussuitableforinstallationina
hazardouslocation,thesymbolforthetypeofprotection“ia” or“ib”
areenclosedwithinsquarebracketson themarking,e.g.AEx d[ia]
IICT4.
Forintrinsicallysafeapparatusnotsuitable forinstallationina
hazardouslocation,both thesymbol“Ex” or“AEx”and thesymbolforthetype
ofprotection“ia”or “ib”are enclosedwithin thesamesquarebracketson
themarking,e.g.[AExia] IIC;inthis case,a temperatureclassis
notincluded.
Note2: Zones 20-22are not currently classied in theCanadian
Electric Code(CEC ).
_
Enclosure Type Ratings [NEC & CEC
]noitinifeDfeirBaerAepyT
1 Indoor General Purpose
2 Indoor Protection against angled dripping water
3, 3R, 3SIndoor /Outdoor
Protection against rain, snow
4, 4XIndoor /Outdoor
Protection against rain, snow, hose directed water and corrosion
(X only)
5 Indoor Protection against angled dripping water, dust, bers,
yings
6Indoor /Outdoor
Protection against temporary submersion
6PIndoor /Outdoor
Protection against prolonged submersion
12, 12K Indoor Protection against circulating dust, bers,
yings
13 Indoor Protection against circulating dust, bers, yings,
seepage
Note4: GroupEisappl icable toClass I I ,Div is ion1 only.Note5 :
Metane isaGroupIIAGasfornon-miningapplicat ions .Note6:
GroupsIIIA,IIIBand IIIChavenotbeenadoptedbythe
CanadianElectricalCode.
Atmosphere
GroupsspuorGenoZspuorGnoisiviDssalCdrazaHecnatsbuS
Acetylene
Class IFlammable Gases
Group A IIC
CIIBpuorGnegordyH
BIICpuorGenelyhtE
AIIDpuorGenaporP
AIIDpuorGenahteM
Combustible Metal Dusts
Class IICombustible Dusts
Group E IIIC
BIIIFpuorGstsuDsuoecanobraCelbitsubmoC
Combustible Dusts not in Group E or F(Flour, Grain, Wood,
Plastics, Chemicals) Group G IIIB
Combustible Fibers and FlyingsClass III
Fibers and FlyingsNot Applicable IIIA
4
5
6
6
6
6
Classication of Divisions and ZonesHazard Level Denitions
ContinuousHazard
Division 1Zone 0 / Zone 20
A place in which an explosive atmosphere iscontinually
present
IntermittentHazard
Zone 1 / Zone 21A place in which an explosive atmosphere
islikely to occur in normal operation
Hazard UnderAbnormalConditions
Division 2 Zone 2 / Zone 22A place in which an explosive
atmosphere isnot likely to occur in normal operation, butmay occur
for short periods
Zone SchemeDivision Scheme
Temperature ClassicationMax. Surface Temperature NEC ® 500 CEC ®
NEC® 505 / IEC - Group II
1T1T)Fº248(Cº054
2T2T)Fº275(Cº003
A2T)Fº635(Cº082
B2T)Fº005(Cº062
C2T)Fº644(Cº032
D2T)Fº914(Cº512
3T3T)Fº293(Cº002
A3T)Fº653(Cº081
B3T)Fº923(Cº561
C3T)Fº023(Cº061
4T4T)Fº572(Cº531
A4T)Fº842(Cº021
5T5T)Fº212(Cº001
6T6T)Fº581(Cº58
Note7: ForGroupI applications(ATEXand
IECExonly),electricalapparatushasxed temperaturelimitsof150ºC(where
layers of coal dust can form) and 450ºC(where coal dust is not
expected to form a layer).
7
Typical ATEX and IECEx Marking
II 2 G Ex d IIC T4 Gb0359Complies
withEuropeanDirective*
EquipmentProtection
Level
Type ofProtection
Environment*
EquipmentCategory*
TemperatureClass (T1-T6)
Gas GroupSpecic
Marking forExplosionProtection* Equipment
Group*Notied BodyNumber* *ATEX only
ExplosionProtection
(EPL)
Equipment Categories &Protection LevelsATEX
Category
EquipmentProtection
Levels
Typical EquipmentZone Suitability
1 G Ga Suitable for Zones 0,1,2
1 D Da Suitable for Zones 20,21,22
2 G Gb Suitable for Zones 1,2
2 D Db Suitable for Zones 21,22
3 G Gc Suitable for Zone 2
3 D Dc Suitable for Zone 22
ATEX Categories vs. Zonesof Use
EquipmentCategory
ATEX 94/9/EC
Zone of Use
Gas, Vapors,& Mist
Dust
C at eg or y 1 Z on e 0 , 1 & 2 Z on e 2 0, 21 & 2 2
Category 2 Zone 1 & 2 Zone 21 & 22
Category 3 Zone 2 Zone 22
Note 8: Unless the explosion protection risk assessment
statesotherwise.
8 8
Type of Protection SymbolTypicalIEC EPL
TypicalZone(s)
IEC StandardBasic Concept of
Protection
Electrical Equipment for Gases, Vapors and Mists (G)
General Requirements - - 0,1,2 IEC 60079-0
Optical RadiationOp prOp shOp is
GbGaGa
1,20,1,20,1,2
IEC 60079-28IEC 60079-28IEC 60079-28
Inherently safeprotected by shutdown
Increased SafetyType ‘n’ (Non-Sparking)
enA
GbGc
1,22
IEC 60079-7IEC 60079-15
No arcs, sparks or hotsurfacesEnclosure IP54 or better
1-97006CEI2,1bGd Contain the explosion,quench the ameType ‘n’
(Enclosed Break) nC Gc 2 IEC 60079-15
Quartz/Sand Filled q Gb 1,2 IEC 60079-5 Quench the ame
Intrinsic Safetyiaibic
GaGbGc
0,1,21,22
IEC 60079-11IEC 60079-11IEC 60079-11
Limit the energy ofsparks and surfacetemperatures
Pressurized
pxpy
pz
GbGb
Gc
1,21,2
2
IEC 60079-2IEC 60079-2
IEC 60079-2
Keep theammable gas out
Type ‘n’ (Sealing & HermeticallySealed)Type ‘n’ (Restricted
Breathing)
nC
nR
Gc
Gc
2
2
IEC 60079-15
IEC 60079-15
Encapsulationmambmc
GaGbGc
0,1,21,22
IEC 60079-18IEC 60079-18IEC 60079-18
Oil Immersion o Gb 1,2 IEC 60079-6
Electrical Equipment for Combustible Dusts (D)
General Requirements - - 20,21,22 IEC 60079-0
Enclosuretatbtc
DaDbDc
202122
IEC 60079-31Standard protectionfor dusts, rugged
tightenclosure
Intrinsic Safetyiaibic
DaDbDc
202122
IEC 60079-11
Similar to enclosure, butwith some relaxationsif circuit inside
isintrinsically safe
Encapsulationmambmc
DaDbDc
202122
IEC 60079-18Protection byencapsulation ofincendive parts
DpdezirusserPDb 21,22
IEC 61241-4Protection bypressurization ofenclosureDc 22
Non-Electrical Equipment
General Requirements - -0,1,2,
20,21,22 EN 13463-1 Low potential energy
Flow Restricted EnclosureFlame-proof Enclosure
frd
--
2,221,2,21,22
EN 13463-2EN 13463-3
Relies on tight seals,closely matched jointsand tough enclosures
torestrict the breathing ofthe enclosure
Constructional Safety c -0,1,2,
20,21,22EN 13463-5
Ignition hazardseliminated by goodengineering methods
Control of Ignition Sources b -0,1,2,
20,21,22EN 13463-6
Control equipmenttted to detectmalfunctions
1,2,21,22
EN 60079-2EN 61241-4
Enclosure is purged andpressurized to preventignition sources
fromarising
0,1,2,20,21,22
EN 13463-8Enclosure uses liquid toprevent contact withexplosive
atmosphere
Flame-proof
Protection Concepts [ATEX and IECEx]
Liquid Immersion k -
Purged /
p -PressurizedPurged /
Ingress Protection Codes[IEC 60529]
First Number (protectfrom solid bodies)
Second Number (protectfrom water)
0 No Pro tect io n 0 No pr ote cti on1 O bj ec ts > 5 0m m 1
Ve rt ic al dr ip
2 Objec ts > 12 .5mm 2 Angled drip
3 O bj ec ts > 2 .5 mm 3 S pr ay in g
4 O bj ec ts > 1 .0 mm 4 S pl as hi ng
5 Dus t- Pro tect ed 5 Je tt in g
6 Dust-Tight 6 Powerful j etting
7 Temporary immersion
8 Continuous immersion
Atmosphere Groups[ATEX & IECEx]
Group Environment Location Typical Substance
I
Gases,Vapors and
Mists
Coal
Mining
Methane
(Fire damp)
IIA Surfaceand
OtherLocations
Methane,Propane, etc.
enelyhtEBII
IICHydrogen,
Acetylene, etc.
IIIA
CombustibleDusts
Surfaceand
OtherLocations
Combustibleyings
evitcudnoc-noNBIII
IIIC Conductive
High pressure andtemperature water jet
9
Electromagnetic Compatibility (EMC)
Machinery
Pressure Equipment
Low Voltage (excludes equipment for use in explosive atmospheres
- seeATEX Annex II 1.2.7)
Radio Equipment and Telecommunications Terminal Equipment
(R&TTE)
Directive 2004/108/EC
Directive 2006/42/EC
Directive 97/23/EC
Directive 2006/95/EC
Directive 1999/5/EC
Other CE Directives That May Be Applicable
DIP US
NI US
Additional Market Access: IECEx Scheme
Manufacturers of Ex equipment can obtain certicates of
conformity that will beaccepted at a national level in all
countries that participate in the IECEx Scheme.
A certicate of conformity may be obtained from any certication
body accepted into the Scheme.The certicate will attest that (1)
the equipment design conforms to relevant IEC Standards and (2)
theproduct is manufactured under a quality plan assessed by an
Approved IECEx Certication Body (Ex CBs).
Manufacturers holding certicates of conformity may afx the IECEx
Mark of Conformity to equipmentthey have veried complies with the
certied design.
Intertek is an IECEx Testing Laboratory and has IECEx Accepted
Certication Body status. For moreinformation on the IECEx Scheme,
contact us at [email protected] or visit www.IECEx.com.
® ®
®
® ®
Equipment Groups [ATEX]
Equipment GroupATEX
EquipmentCategory
AtmosphereEquipmentProtectionLevel (EPL)
Required ProtectionPerformance & Operation
I (Mines withFiredamp) M1 Methane & Dust Very High Ma
Two faults, Remainenergized and functioning
I (Mines withFiredamp) M2 Methane & Dust High Mb
Severe normal operation,De-energize in exp. atm.
II (All Other Areas) 1G, 1D Gas, Vapor, Mis t, Dust Very High
Two fault s
II (All Other areas) 2G, 2D Gas, Vapor, Mist, Dust High One
fault
II (All Other Areas) 3G, 3D Gas, Vap or, Mis t, Du st Lo w Nor
mal op er at io n
Product Category Standard(s)
Standards by Product TypesClass & Division
Luminaires
CSA C22.2 No. 137 “Electricluminaires for use in
hazardouslocations”
Class I, Divisions 1 & 2Class II, Divisions 1 & 2
Motors andGenerators(Explosion-proof &Dust-ignition
proof)
UL 674 “Electric motors andgenerators for use in
hazardous(classied) locations”
Class I, Division 1, Groups B,C,DClass I, Zone 1, Groups IIA,
IIB, IIB+H2Class II, Division 1, Groups E,F,G
CSA C22.2 No. 145 “Electric motorsand generators for use in
hazardous(classied) locations”
Class II, Zones 20, 21
IndustrialControl Panels
UL 698A “Industrial control panelsrelating to hazardous
(classied)locations”
Associated apparatus for the followinghazardous (classied)
locations:Class I, Division 1Class I, Zone 0 and Zone 1Class II,
Division 1Class III, Division 1Class II, Zone 20 and Zone 21
CSA C22.2 No. 14 “Industrial controlequipment” Section 4.18
Control panels located in ordinarylocations with intrinsically
safe barriers:Class I, Division 1Class I, Zone 0 and Zone 1Class
II, Division 1
Flashlights UL 783 “Electric ashlights andlanterns for use in
hazardous(classied) locations”
Class I, Divisions 1 & 2Class II, Divisions 1 & 2Class
I, Zones 1 & 2
Heaters UL 823 “Electric heaters for use inhazardous (classied)
locations”
Class I, Divisions 1 & 2Class II, Divisions 1 & 2Class
III, Divisions 1 & 2Class I, Zone 1Class II, Zones 20, 21, and
22
Fuel DispensingEquipment
UL 87 “Power-operated dispensingdevices for petroleum
products”
Areas classied for fuel dispensingequipment per national and
local codes
UL 1238 “Control equipment for usewith ammable liquid
dispensingdevices”
CSA C22.2 No. 22 “Electricalequipment for ammable andcombustible
fuel dispensers”
UL 844 “Luminaires for use inHazardous (Classied) Locations”
Class I, Divisions 1 & 2Class II, Divisions 1 & 2Class
I, Zones 1 & 2Class II, Zones 20, 21, 22Class III
UL 87A Dispensers for gasoline andethonol blends, E0 to E85
UL 87B Dispensers for diesel fuel, biodiesel blends to B20,
kerosene andfuel oil
UL 87C Dispensers for diesel exhaustuids
3
3
Note3: UL674andCSA145 areharmonizedstandards.
