Guide to Equipment Certification Requirements for ... · PDF fileGuide to Equipment...
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Guide to Equipment Certification Requirements for Hazardous Locations Quality Assurance Quality Assurance is concerned with the continued monitoring of systems and processes in relation to manufacturers of Ex products, and is concerned mainly with post-compliance activities. CSA Group offers the full range of QA services including ATEX & IECEx Product & Production Quality Assurance, Certification of Service Facilities involved in repair and overhaul of Ex Equipment and technical auditing services. The routes to market for ATEX and IECEx: • ATEX QAN (Quality Assurance Notification): Quality system certification for the manufacture of category 1 and category 2 electrical equipment (refer IEC/ISO 80079-34 and ATEX Directive Annexes IV / VII). • IECEx QAR (Quality Assessment Report): Required together with the ExTR (test report) to enable issue of an IECEx Certificate of Conformity (refer IEC/ISO 80079-34 and IECEx Scheme Rules). • ATEX Conformity-to-Type Notification: Certification for the manufacture of category 2 electrical equipment (refer ATEX Directive Annexes VI). • ATEX Product Verification: Certification for the manufacture of category 1 equipment - 100% verification by the Notified Body (refer ATEX Directive Annexes V). • ATEX or IECEx Unit Verification: Certification covering design and manufacture of equipment - 100% verification by the Notified Body (refer ATEX Directive Annexes IX and IECEx Scheme Rules). ATEX & IEC Training & Competence CSA Group has been at the forefront of hazardous area training for over 25 years, utilising the skills and experience of our highly specialised engineers and lecturers to ‘transfer knowledge’. This detailed knowledge and vast experience allows us to offer a comprehensive range of training courses and competence schemes that can be delivered as part of our ‘open’ training programme or tailored to your needs and delivered on-site at your premises. • Hazardous Area Training (ATEX, DSEAR & IEC) • Functional Safety Training • Environmental & MCERTS Training • Competence Certification (CoPC) - IECEx Certification of Personnel Competence Scheme - MCERTS Personnel Competence Scheme For further details please contact CSA Group on: + 44 1244 670 900 or Email: [email protected] Functional Safety CSA Group is a leading provider of functional safety certification. IEC 61508 is the international standard for electrical, electronic and programmable electronic safety (E/E/PE) related systems. It sets out the requirements for ensuring that systems are designed, implemented, operated and maintained to provide the required safety integrity level (SIL). Four SILs are defined according to the risks involved in the system application, with SIL4 being used to protect against the highest risks. The standard specifies a process that can be followed by all links in the supply chain so that information about the system can be communicated using common terminology and system parameters. The standard consists of the following parts: IEC 61508-1 General requirements. IEC 61508-2 Requirements for E/E/PE safety-related systems. IEC 61508-3 Software requirements. IEC 61508-4 Definitions and abbreviations. IEC 61508-5 Examples and methods for the determination of safety integrity levels. IEC 61508-6 Guidelines on the application of IEC 61508-2 and IEC 61508-3. IEC 61508-7 Overview of techniques and measures. Sector specific standards related to IEC 61508 include: IEC 61511 Process industries. IEC 61513 Nuclear power plants. IEC 62061 Machinery sector and ISO 13849. IEC 61800-5-2 Power drive systems. EN 50272 and EN 50402 Functional safety requirements for portable and fixed gas detection systems. EN 50495 safety devices requirements for safe operation of equipments with respect to explosion risks. www.csagroup.org www.siracertification.com CSA Group Hazardous Location Certification Offices Chester, UK: + 44 1244 670 900 Cleveland, OH, USA: + 1 877 235 9791 Dallas, TX, USA: + 1 817 652 9600 Edmonton, AB, CDN: + 1 780 450 2111 Toronto, ON, CDN: + 1 416 747 4000 ATEX & IECEx Certificate Number 700º 600º 500º 400º 300º 200º 100º T6 85º T5 100º T4 135º T3 200º T2 300º T1 450º Protection Concepts Type of Protection Code Country Class Division / Zone Standard Basic Concept of Protection Electrical Equipment for Flammable Gas, Vapors and Mists - Class I General Requirements AEx Ex US CA US CA Class I Class I Class I Class I Division 1 & 2 Division 1 & 2 Zone 1 & 2 Zone 1 & 2 FM 3600 - ISA 60079-0 CSA 60079-0 Increased Safety AEx e Ex e US CA Class I Class I Zone 1 Zone 1 ISA 60079-7 CSA C22.2 No. 60079-7 No arcs, sparks or hot surfaces Non-Incendive (NI) (NI) US CA Class I Class I Division 2 Division 2 ISA 12.12.01 / FM 3611 C22.2 No. 213 Non-Sparking AEx nA Ex nA US CA Class I Class I Zone 2 Zone 2 ISA 60079-15 CSA C22.2 No. 60079-15 Explosion Proof (XP) (XP) US CA Class I Class I Division 1 Division 1 UL 1203 / FM 3615 C22.2 No. 30 Contain the explosion and extinguish the flame Flameproof AEx d AEx d Ex d US US CA Class I Class I Class I Zone 1 Zone 1 Zone 1 ISA 60079-1 UL 1203 / FM 3615 CSA 60079-1 Powder Filled AEx q Ex q US CA Class I Class I Zone 1 Zone 1 ISA 60079-5 CSA C22.2 No. 60079-5 Enclosed Break AEx nC Ex nC US CA Class I Class I Zone 2 Zone 2 ISA 60079-15 CSA C22.2 No. 60079-15 Intrinsic Safety (IS) (IS) AEx ia AEx ib EX ia Ex ib US CA US US CA CA Class I Class I Class I Class I Class I Class I Division 1 Division 1 Zone 0 Zone 1 Zone 0 Zone 1 UL 913 / FM 3610 C22.2 No. 157 ISA 60079-11 / FM 3610 ISA 60079-11 / FM 3610 CSA C22.2 No. 60079-11 CSA C22.2 No. 60079-11 Limit energy of sparks and surface temperature Limited Energy AEx nC Ex nL US CA Class I Class I Zone 2 Zone 2 ISA 60079-15 CSA C22.2 No. 60079-15 Pressurised Type X Type X Type Y Type Y Type Z Type Z AEx px Ex px AEx py Ex py AEx pz Ex pz US CA US CA US CA US CA US CA US CA Class I Class I Class I Class I Class I Class I Class I Class I Class I Class I Class I Class I Division 1 Division 1 Division 1 Division 1 Division 2 Division 2 Zone 1 Zone 1 Zone 1 Zone 1 Zone 2 Zone 2 NFPA 496 (FM 3620) NFPA 496 NFPA 496 (FM 3620) NFPA 496 NFPA 496 (FM 3620) NFPA 496 ISA 60079-2 CSA C22.2 No. 60079-2 ISA 60079-2 CSA C22.2 No. 60079-2 ISA 60079-2 CSA C22.2 No. 60079-2 Keep flammable gas out Restricted Breathing AEx nR Ex nR US CA Class I Class I Zone 2 Zone 2 ISA 60079-15 CSA C22.2 No. 60079-15 Encapsulated AEx ma AEx m Ex m AEx mb US US CA US Class I Class I Class I Class I Zone 0 Zone 1 Zone 1 Zone 1 ISA 60079-18 ISA 60079-18 CSA C22.2 No. 60079-18 ISA 60079-18 Oil Immersion AEx o Ex o US CA Class I Class I Zone 1 Zone 1 ISA 60079-6 CSA C22.2 No. 60079-6 Electrical Equipment for Combustible Dust and Fibres - Class II / Class III General Requirements Ex US CA US CA US Class II Class II Class III Class III - Division 1 & 2 Division 1 & 2 Division 1 & 2 Division 1 & 2 Zone 20, 21, 22 FM 3600 CSA C22.2 No.0 FM 3600 CSA C22.2 No.0 ISA 60079-0 Dust Ignition Proof - US CA Class II Class II Division 1 Division 1 UL 1203 / FM 3616 CSA C22.2 No. 25 Keep combustible dust out Dust Protected - US CA Class II Class II Division 2 Division 2 ISA 12.12.01 / FM 3611 CSA C22.2 No. 25 Protection by Enclosure AEx ta AEx tb AEx tc Ex ta Ex tb Ex tc US US US CA CA CA Class II Class II Class II Class II Class II Class II Zone 20 Zone 21 Zone 22 Zone 20 Zone 21 Zone 22 ISA 60079-31 ISA 60079-31 ISA 60079-31 CSA C22.2 No. 60079-31 CSA C22.2 No. 60079-31 CSA C22.2 No. 60079-31 Fiber & Flying Protection - - US CA Class III Class III Division 1 & 2 Division 1 & 2 UL 1203 / ISA 12.12.01 CSA C22.2 No. 25 Encapsulation AEx maD AEx mbD US US - - Zone 20 Zone 21 ISA 60079-18 ISA 60079-18 Pressurisation (PX) (PX) (PY) (PY) (PZ) (PZ) AEx pD US CA US CA US CA US Class II Class II Class II Class II Class II Class II - Division 1 Division 1 Division 1 Division 1 Division 2 Division 2 Zone 21 NFPA 496 (FM 3620) NFPA 496 NFPA 496 (FM 3620) NFPA 496 NFPA 496 (FM 3620) NFPA 496 ISA 61241-2 Intrinsic Safety (IS) (IS) AEx iaD AEx ibD (IS) (IS) US CA US US US CA Class II Class II - - Class III Class III Division 1 Division 1 Zone 20 Zone 21 Division 1 Division 1 UL 913 / FM 3610 CSA C22.2 No. 157 ISA 60079-11 ISA 60079-11 UL 913 / FM 3610 CSA C22.2 No. 157 Limit energy of sparks and surface temperature Note: For associated intrinsically safe apparatus suitable for installation in a hazardous location, the symbol for the type of protection “ia” or “ib” are enclosed within square brackets on the marking, e.g. AEx d [ia] IIC T4. Note: For intrinsically safe apparatus not suitable for installation in a hazardous location, both the symbol “Ex” or “AEx” and the symbol for the type of protection “ia” or “ib” are enclosed within the same square brackets on the marking, e.g. [AEx ia] IIC; in this case, a temperature class is not included. Protection Concepts [ATEX and IECEx] Type of Protection Symbol Typical IEC EPL Typical Zone(s) IEC Standard Basic Concept of Protection Electrical equipment for Gases, Vapours and Mists (G) General Requirements - - - IEC 60079-0 - Optical Radiation Op pr Op sh Op is Gb Ga Ga 1,2 0,1,2 0,1,2 IEC 60079-28 Protection against ignitions from optical radiation Increased Safety Type ‘n’ (non-sparking) e nA Gb Gc 1,2 2 IEC 60079-7 IEC 60079-15 No arcs, sparks or hot surfaces. Enclosure IP54 or better Flameproof d Gb 1,2 IEC 60079-1 Contain the explosion, quench the flame Type ‘n’ (enclosed break) nC Gc 2 IEC 60079-15 Quartz / Sand Filled q Gb 1,2 IEC 60079-5 Quench the flame Intrinsic Safety ia ib ic Ga Gb Gc 0,1,2 1,2 2 IEC 60079-11 Limit the energy of sparks and surface temperatures Pressurised px py pz Gb Gb Gc 1,2 1,2 2 IEC 60079-2 Keep the flammable gas out Type ‘n’ (sealing & hermetic sealing) Type ‘n’ (restricted breathing) nC nR Gc Gc 2 2 IEC 60079-15 Encapsulation ma mb mc Ga Gb Gc 0,1,2 1,2 2 IEC 60079-18 Oil Immersion o Gb 1,2 IEC 60079-6 Electrical equipment for Combustible Dusts (D) General Requirements - - - IEC 60079-0 - Enclosure ta tb tc Da Db Dc 20 21 22 IEC 60079-31 Standard protection for dusts, rugged tight enclosure Intrinsic Safety ia ib ic Da Db Dc 20 21 22 IEC 60079-11 Limit the energy of sparks and surface temperatures Encapsulation ma mb mc Da Db Dc 20 21 22 IEC 60079-18 Protection by encapsulation of incendive parts Pressurised pD Db 21,22 IEC 61241-4 Protection by pressurisation of enclosure Dc 22 Non-Electrical equipment General Requirements - - - EN 13463-1 Low potential energy Flow Restricted Enclosure Flameproof Enclosure fr d - - 2,22 1,2,21,22 EN 13463-2 EN 13463-3 Relies on tight seals, closely matched joints and tough enclosures to restrict the breathing of the enclosure Constructional Safety c - All, See EPL EN 13463-5 Ignition hazards eliminated by good engineering methods Control of Ignition Sources b - All, See EPL EN 13463-6 Control equipment fitted to detect malfunctions Pressurisation p - 1,2, 21,22 EN 60079-2 EN 61241-4 Enclosure is purged and pressurised to prevent ignition sources from arising Liquid Immersion k - All, See EPL EN 13463-8 Enclosure uses liquid to prevent contact with explosive atmosphere Apparatus Groups [ATEX and IECEx] Group Environment Location Typical Substance I Gases, Vapours Coal Mining Methane (Fire damp) IIA Surface and other locations Acetic acid, Acetone, Ammonia, Butane, Cyclohexane, Gasoline (petrol), Kerosene, Methane (natural gas) (non-mining), Metha- nol (methyl alcohol), Propane, Propan-2-ol (iso-propyl alcohol), Toluene, Xylene IIB Di-ethyl ether, Ethylene, Methyl ethyl ketone (MEK), Propan-1-ol (n-propyl alcohol), Ethanol (ethyl alcohol) IIC Acetylene, Hydrogen, Carbon disulphide IIIA Combustible Dusts Surface and other locations Combustible flyings IIIB Non-conductive IIIC Conductive Classification of Divisions and Zones Type of Area NEC and CEC* ATEX and IEC Definitions Continous hazard Division 1 Zone 0 / Zone 20 Cat 1 A place in which an explosive atmosphere is continuously present Intermittent hazard Division 1 Zone 1 / Zone 21 Cat 2 A place in which an explosive atmosphere is likely to occur in normal operation Hazard under abnormal conditions Division 2 Zone 2 / Zone 22 Cat 3 A place in which an explosive atmosphere is not likely to occur in normal operation, but may occur for short periods * On occasion the ATEX and IEC Zones may be used in the corresponding NEC and CEC system Enclosure Type Ratings (NEMA / CSA / UL) Type Area Brief Definition 1 Indoor General purpose 2 Indoor Protection against angled dripping water 3, 3R, 3S Indoor / Outdoor Protection against rain, snow 4, 4X Indoor / Outdoor Protection against rain, snow, hose directed water 5 Indoor Protection against angled dripping water, dust, fibers, flyings 6 Indoor / Outdoor Protection against temporary submersion 6P Indoor / Outdoor Protection against prolonged submersion 12, 12K Indoor Protection against circulating dust, fibers, flyings 13 Indoor Protection against circulating dust, fibers, flyings, seepage Dusts Typical Ignition Temperatures (°C) Dusts Cloud Layer Aluminium Coal dust (lignite) Flour Grain dust Methyl cellulose Phenolic resin Polythene PVC Soot Starch Sugar 590 °C 380 °C 490 °C 510 °C 420 °C 530 °C 420 °C 700 °C 810 °C 460 °C 490 °C >450 °C 225 °C 340 °C 300 °C 320 °C >450 °C (melts) °C >450 °C 570 °C 435 °C 460 °C Apparatus Groups (US / CAN) Substance Hazard Class NEC 500 NEC 505 Acetylene Class I Flammable Gases Group A IIC Hydrogen Group B IIC Ethylene Group C IIB Propane Group D IIA Methane (mining) Group D - Combustible Metal Dusts Class II Combustible Dusts Group E - Combustible Carbonaceous Dusts Group F - Combustible Dusts not in Group E or F (Flour, Grain, Wood, Plastics, Chemicals) Group G - Combustible Fibers and Flyings Class III Fibers and Flyings - - Equipment Groups [ATEX and IECEx] Equipment Group Equipment Category Equipment Protection Level Atmosphere Protection Level Required Protection Performance & Operation I (Mines with firedamp) M1 Ma Methane & Dust Very High Two Faults, Remain energised and functioning I (Mines with firedamp) M2 Mb Methane & Dust High Severe normal operation, De-energise in explosive atmosphere II (all other areas) 1 Ga / Da Gas, Vapour, Mist, Dust Very High Two Faults II (all other areas) 2 Gb / Db Gas, Vapour, Mist, Dust High One Fault II (all other areas) 3 Gc / Dc Gas, Vapour, Mist, Dust Low Normal operation Typical ATEX & IECEx Marking [*ATEX only] Typical North American Marking (CSA) Reference to ATEX 95 Directive Serial Number Year of Certification Name of Notified Body performing EC-type examination SIRA 13 ATEX 1234 Gas Group Dust Group Temperature Class Area Classification Area Classification Hazard Class Hazard Class Class I, Division 1, Groups A,B,C,D T4 Class II, Division 1, Groups E,F,G II 2 G *Specific Marking for Explosion Protection *Equipment Group *Equipment Category *Environment *Complies with European Directives *Notified Body Number Gas Group Protection Concept Code Approved to US Standards Temperature Class Area Classification Hazard Class Class I, Zone 0, AEx ia IIC T4 Equipment Protection Level (EPL) Temperature Class (T1-T6) Gas Group Type of Protection Explosion Protection Ex d IIC T4 Gb Equipment Protection Level Temperature Class (°C) Dust Type Type of Protection Explosion Protection Ex tb IIIC T135°C Db Serial Number Year of Certification Name of Body Performing IECEx Certification Reference to IECEx Scheme IECEx CSA 13.1234 Temperature Classification Classification of maximum surface temperatures for Group II Electronic Equipment (T Class). IIA T1 Ammonia 630° IIC T1 Hydrogen 560° IIA T1 Methane 537° IIA T1 Propane 470° IIB T2 Ethylene 425° IIA T2 Butane 372° IIC T2 Acetylene 305° IIA T3 Cyclohexane 259° IIA T3 Kerosene 210° IIB T4 Di-ethyl Ether 160° IIC T6 Carbon Disulphide 95° CCSAUS ATEX & IECEx Suffixes: U – component certification X – special conditions for safe use apply Ingress Protection Codes First Number (protect from solid bodies) Second Number (protect from water) 0 No protection 0 No protection 1 Objects > 50mm 1 Vertical drip 2 Objects > 12.5mm 2 Angled drip 3 Objects > 2.5mm 3 Spraying 4 Objects > 1.0mm 4 Splashing 5 Dust-protected 5 Jetting 6 Dust-tight 6 Powerful jetting 7 Temporary immersion 8 Continuous immersion °C CSA Group has provided the technical information for this publication. CSA Group retains all intellectual property including copyright in its work. Issued October 2013
Transcript of Guide to Equipment Certification Requirements for ... · PDF fileGuide to Equipment...
Guide to Equipment Certification Requirements for Hazardous Locations
Quality AssuranceQuality Assurance is concerned with the continued monitoring of systems and processes in relation to manufacturers of Ex products, and is concerned mainly with post-compliance activities.
CSA Group offers the full range of QA services including ATEX & IECEx Product & Production Quality Assurance, Certification of Service Facilities involved in repair and overhaul of Ex Equipment and technical auditing services.
The routes to market for ATEX and IECEx:
• ATEXQAN(QualityAssuranceNotification):Qualitysystemcertificationforthemanufactureof category1andcategory2electricalequipment(referIEC/ISO80079-34andATEXDirective AnnexesIV/VII).
• IECExQAR(QualityAssessmentReport):RequiredtogetherwiththeExTR(testreport)toenable issueofanIECExCertificateofConformity(referIEC/ISO80079-34andIECExSchemeRules).
• ATEXConformity-to-TypeNotification:Certificationforthemanufactureofcategory2 electricalequipment(referATEXDirectiveAnnexesVI).
• ATEXProductVerification:Certificationforthemanufactureofcategory1equipment -100%verificationbytheNotifiedBody(referATEXDirectiveAnnexesV).
• ATEXorIECExUnitVerification:Certificationcoveringdesignandmanufactureofequipment -100%verificationbytheNotifiedBody(referATEXDirectiveAnnexesIXandIECExSchemeRules).
ATEX & IEC Training & CompetenceCSAGrouphasbeenattheforefrontofhazardousareatrainingforover25years,utilisingtheskills and experience of our highly specialised engineers and lecturers to ‘transfer knowledge’.
This detailed knowledge and vast experience allows us to offer a comprehensive range of trainingcoursesandcompetenceschemesthatcanbedeliveredaspartofour‘open’trainingprogramme or tailored to your needs and delivered on-site at your premises.
• HazardousAreaTraining(ATEX,DSEAR&IEC)
• FunctionalSafetyTraining
• Environmental&MCERTSTraining
• CompetenceCertification(CoPC)
- IECEx Certification of Personnel Competence Scheme
- MCERTSPersonnelCompetenceScheme
ForfurtherdetailspleasecontactCSAGroupon:+441244670900orEmail:[email protected]
Functional SafetyCSAGroupisaleadingprovideroffunctionalsafetycertification.IEC61508istheinternationalstandardforelectrical,electronicandprogrammableelectronicsafety(E/E/PE)relatedsystems.It sets out the requirements for ensuring that systems are designed, implemented, operated and maintainedtoprovidetherequiredsafetyintegritylevel(SIL).FourSILsaredefinedaccordingtotherisksinvolvedinthesystemapplication,withSIL4beingusedtoprotectagainstthehighestrisks.Thestandardspecifiesaprocessthatcanbefollowedbyalllinksinthesupplychainsothatinformationaboutthesystemcanbecommunicatedusingcommonterminologyandsystemparameters.
The standard consists of the following parts:
IEC 61508-1 General requirements. IEC 61508-2RequirementsforE/E/PEsafety-relatedsystems.IEC 61508-3 Software requirements. IEC 61508-4 Definitionsandabbreviations.IEC 61508-5 Examples and methods for the determination of safety integrity levels.IEC 61508-6 GuidelinesontheapplicationofIEC61508-2andIEC61508-3.IEC 61508-7 Overviewoftechniques and measures.
Sector specific standards related to IEC 61508 include:
IEC 61511 Process industries. IEC 61513Nuclearpowerplants.IEC 62061MachinerysectorandISO13849.IEC 61800-5-2 Power drive systems. EN 50272 and EN 50402 Functional safety requirementsforportableandfixedgasdetectionsystems.EN 50495 safety devices requirements for safe operation of equipments with respect to explosion risks.
www.csagroup.orgwww.siracertification.com
CSA Group Hazardous Location Certification Offices
Chester, UK: + 44 1244 670 900 Cleveland, OH, USA: + 1 877 235 9791 Dallas, TX, USA: + 1 817 652 9600 Edmonton, AB, CDN: + 1 780 450 2111 Toronto, ON, CDN: + 1 416 747 4000
ATEX & IECEx Certificate Number
700º
600º
500º
400º
300º
200º
100ºT6 85º
T5 100º
T4 135º
T3 200º
T2 300º
T1 450º
Protection ConceptsType ofProtection
Code Country Class Division / Zone StandardBasic Conceptof Protection
Electrical Equipment for Flammable Gas, Vapors and Mists - Class I
General
Requirements
AEx
Ex
US
CA
US
CA
Class I
Class I
Class I
Class I
Division1&2
Division1&2
Zone 1 & 2
Zone 1 & 2
FM3600
-
ISA60079-0
CSA60079-0
Increased
Safety
AEx e
Ex e
US
CA
Class I
Class I
Zone 1
Zone 1
ISA60079-7
CSAC22.2No.60079-7
Noarcs,sparks
or hot surfacesNon-Incendive
(NI)
(NI)
US
CA
Class I
Class I
Division2
Division2
ISA12.12.01/FM3611
C22.2No.213
Non-SparkingAEx nA
Ex nA
US
CA
Class I
Class I
Zone 2
Zone 2
ISA60079-15
CSAC22.2No.60079-15
Explosion Proof(XP)
(XP)
US
CA
Class I
Class I
Division1
Division1
UL1203/FM3615
C22.2No.30
Contain the
explosion and
extinguish the
flame
Flameproof
AEx d
AEx d
Ex d
US
US
CA
Class I
Class I
Class I
Zone 1
Zone 1
Zone 1
ISA60079-1
UL1203/FM3615
CSA60079-1
Powder FilledAEx q
Ex q
US
CA
Class I
Class I
Zone 1
Zone 1
ISA60079-5
CSAC22.2No.60079-5
EnclosedBreakAEx nC
Ex nC
US
CA
Class I
Class I
Zone 2
Zone 2
ISA60079-15
CSAC22.2No.60079-15
Intrinsic Safety
(IS)
(IS)
AEx ia
AExib
EX ia
Exib
US
CA
US
US
CA
CA
Class I
Class I
Class I
Class I
Class I
Class I
Division1
Division1
Zone0
Zone 1
Zone0
Zone 1
UL913/FM3610
C22.2No.157
ISA60079-11/FM3610
ISA60079-11/FM3610
CSAC22.2No.60079-11
CSAC22.2No.60079-11
Limitenergy
of sparks
and surface
temperature
LimitedEnergyAEx nC
ExnL
US
CA
Class I
Class I
Zone 2
Zone 2
ISA60079-15
CSAC22.2No.60079-15
Pressurised
Type X
Type X
Type Y
Type Y
Type Z
Type Z
AEx px
Ex px
AEx py
Ex py
AExpz
Expz
US
CA
US
CA
US
CA
US
CA
US
CA
US
CA
Class I
Class I
Class I
Class I
Class I
Class I
Class I
Class I
Class I
Class I
Class I
Class I
Division1
Division1
Division1
Division1
Division2
Division2
Zone 1
Zone 1
Zone 1
Zone 1
Zone 2
Zone 2
NFPA496(FM3620)
NFPA496
NFPA496(FM3620)
NFPA496
NFPA496(FM3620)
NFPA496
ISA60079-2
CSAC22.2No.60079-2
ISA60079-2
CSAC22.2No.60079-2
ISA60079-2
CSAC22.2No.60079-2
Keep
flammable
gas out
Restricted
Breathing
AExnR
ExnR
US
CA
Class I
Class I
Zone 2
Zone 2
ISA60079-15
CSAC22.2No.60079-15
Encapsulated
AEx ma
AEx m
Ex m
AExmb
US
US
CA
US
Class I
Class I
Class I
Class I
Zone0
Zone 1
Zone 1
Zone 1
ISA60079-18
ISA60079-18
CSAC22.2No.60079-18
ISA60079-18
OilImmersionAEx o
Ex o
US
CA
Class I
Class I
Zone 1
Zone 1
ISA60079-6
CSAC22.2No.60079-6
Electrical Equipment for Combustible Dust and Fibres - Class II / Class III
General
RequirementsEx
US
CA
US
CA
US
Class II
Class II
Class III
Class III
-
Division1&2
Division1&2
Division1&2
Division1&2
Zone20,21,22
FM3600
CSAC22.2No.0
FM3600
CSAC22.2No.0
ISA60079-0
DustIgnition
Proof-
US
CA
Class II
Class II
Division1
Division1
UL1203/FM3616
CSAC22.2No.25
Keep
combustible
dust out
DustProtected -US
CA
Class II
Class II
Division2
Division2
ISA12.12.01/FM3611
CSAC22.2No.25
Protectionby
Enclosure
AEx ta
AExtb
AEx tc
Ex ta
Extb
Ex tc
US
US
US
CA
CA
CA
Class II
Class II
Class II
Class II
Class II
Class II
Zone20
Zone 21
Zone 22
Zone20
Zone 21
Zone 22
ISA60079-31
ISA60079-31
ISA60079-31
CSAC22.2No.60079-31
CSAC22.2No.60079-31
CSAC22.2No.60079-31
Fiber&Flying
Protection
-
-
US
CA
Class III
Class III
Division1&2
Division1&2
UL1203/ISA12.12.01
CSAC22.2No.25
EncapsulationAExmaD
AExmbD
US
US
-
-
Zone20
Zone 21
ISA60079-18
ISA60079-18
Pressurisation
(PX)
(PX)
(PY)
(PY)
(PZ)
(PZ)
AExpD
US
CA
US
CA
US
CA
US
Class II
Class II
Class II
Class II
Class II
Class II
-
Division1
Division1
Division1
Division1
Division2
Division2
Zone 21
NFPA496(FM3620)
NFPA496
NFPA496(FM3620)
NFPA496
NFPA496(FM3620)
NFPA496
ISA61241-2
Intrinsic Safety
(IS)
(IS)
AExiaD
AExibD
(IS)
(IS)
US
CA
US
US
US
CA
Class II
Class II
-
-
Class III
Class III
Division1
Division1
Zone20
Zone 21
Division1
Division1
UL913/FM3610
CSAC22.2No.157
ISA60079-11
ISA60079-11
UL913/FM3610
CSAC22.2No.157
Limitenergy
of sparks
and surface
temperature
Note:Forassociatedintrinsicallysafeapparatussuitableforinstallationinahazardouslocation,thesymbolforthetype
ofprotection“ia”or“ib”areenclosedwithinsquarebracketsonthemarking,e.g.AExd[ia]IICT4.
Note:Forintrinsicallysafeapparatusnotsuitableforinstallationinahazardouslocation,boththesymbol“Ex”or“AEx”
andthesymbolforthetypeofprotection“ia”or“ib”areenclosedwithinthesamesquarebracketsonthemarking,
e.g.[AExia]IIC;inthiscase,atemperatureclassisnotincluded.
Protection Concepts [ATEX and IECEx]Type ofProtection
SymbolTypicalIEC EPL
TypicalZone(s)
IEC StandardBasic Conceptof Protection
Electrical equipment for Gases, Vapours and Mists (G)
GeneralRequirements - - - IEC60079-0 -
OpticalRadiationOpprOpshOpis
GbGaGa
1,20,1,20,1,2
IEC60079-28Protection against ignitions from optical radiation
Increased SafetyType‘n’(non-sparking)
enA
GbGc
1,22
IEC60079-7IEC60079-15
Noarcs,sparksorhotsurfaces.EnclosureIP54orbetter
Flameproof d Gb 1,2 IEC60079-1 Contain the explosion, quench the flameType‘n’(enclosedbreak) nC Gc 2 IEC60079-15
Quartz/SandFilled q Gb 1,2 IEC60079-5 Quench the flame
Intrinsic Safetyiaibic
GaGbGc
0,1,21,22
IEC60079-11Limittheenergyofsparksand surface temperatures
Pressurisedpxpypz
GbGbGc
1,21,22
IEC60079-2
Keeptheflammablegas out
Type‘n’(sealing&hermeticsealing)Type‘n’(restrictedbreathing)
nCnR
GcGc
22
IEC60079-15
Encapsulationmambmc
GaGbGc
0,1,21,22
IEC60079-18
OilImmersion o Gb 1,2 IEC60079-6
Electrical equipment for Combustible Dusts (D)
GeneralRequirements - - - IEC60079-0 -
Enclosuretatbtc
DaDbDc
202122
IEC60079-31Standard protection for dusts, rugged tight enclosure
Intrinsic Safetyiaibic
DaDbDc
202122
IEC60079-11Limittheenergyofsparksand surface temperatures
Encapsulationmambmc
DaDbDc
202122
IEC60079-18Protectionbyencapsulationof incendive parts
Pressurised pDDb 21,22
IEC61241-4Protectionbypressurisationof enclosureDc 22
Non-Electrical equipment
GeneralRequirements - - - EN13463-1 Lowpotentialenergy
FlowRestrictedEnclosureFlameproof Enclosure
frd
--
2,221,2,21,22
EN13463-2EN13463-3
Reliesontightseals,closelymatched joints and tough enclosures to restrict the breathingoftheenclosure
Constructional Safety c -All,SeeEPL
EN13463-5Ignitionhazardseliminatedbygoodengineeringmethods
Control of Ignition Sources b -All,SeeEPL
EN13463-6Control equipment fitted to detect malfunctions
Pressurisation p -1,2,21,22
EN60079-2EN61241-4
Enclosure is purged andpressurised to prevent ignition sources from arising
LiquidImmersion k -All,SeeEPL
EN13463-8Enclosure uses liquid to prevent contact with explosive atmosphere
Apparatus Groups [ATEX and IECEx]Group Environment Location Typical Substance
I
Gases, Vapours
CoalMining Methane(Firedamp)
IIA
Surface
and other
locations
Aceticacid,Acetone,Ammonia,Butane,
Cyclohexane,Gasoline(petrol),Kerosene,
Methane(naturalgas)(non-mining),Metha-
nol(methylalcohol),Propane,Propan-2-ol
(iso-propylalcohol),Toluene,Xylene
IIB
Di-ethylether,Ethylene,Methylethylketone
(MEK),Propan-1-ol(n-propylalcohol),Ethanol
(ethylalcohol)
IIC Acetylene,Hydrogen,Carbondisulphide
IIIA
CombustibleDusts
Surface
and other
locations
Combustibleflyings
IIIB Non-conductive
IIIC Conductive
Classification of Divisions and ZonesType of Area NEC and CEC* ATEX and IEC Definitions
Continous
hazardDivision1
Zone0/Zone20
Cat 1
A place in which an explosive atmosphere is
continuously present
Intermittent
hazardDivision1
Zone1/Zone21
Cat 2
A place in which an explosive atmosphere is
likely to occur in normal operation
Hazardunder
abnormalconditionsDivision2
Zone2/Zone22
Cat3
A place in which an explosive atmosphere is
notlikelytooccurinnormaloperation,but
may occur for short periods
*OnoccasiontheATEXandIECZonesmaybeusedinthecorrespondingNECandCECsystem
Enclosure Type Ratings (NEMA / CSA / UL)Type Area Brief Definition
1 Indoor General purpose
2 Indoor Protection against angled dripping water
3,3R,3S Indoor/Outdoor Protection against rain, snow
4,4X Indoor/Outdoor Protection against rain, snow, hose directed water
5 Indoor Protectionagainstangleddrippingwater,dust,fibers,flyings
6 Indoor/Outdoor Protectionagainsttemporarysubmersion
6P Indoor/Outdoor Protectionagainstprolongedsubmersion
12, 12K Indoor Protectionagainstcirculatingdust,fibers,flyings
13 Indoor Protectionagainstcirculatingdust,fibers,flyings,seepage
Dusts Typical Ignition Temperatures (°C)Dusts Cloud Layer
Aluminium
Coaldust(lignite)
Flour
Grain dust
Methylcellulose
Phenolic resin
Polythene
PVC
Soot
Starch
Sugar
590°C
380°C
490°C
510°C
420°C
530°C
420°C
700°C
810°C
460°C
490°C
>450°C
225°C
340°C
300°C
320°C
>450°C
(melts)°C
>450°C
570°C
435°C
460°C
Apparatus Groups (US / CAN)Substance Hazard Class NEC 500 NEC 505
Acetylene
Class I
FlammableGases
Group A IIC
Hydrogen GroupB IIC
Ethylene Group C IIB
Propane GroupD IIA
Methane(mining) GroupD -
CombustibleMetalDusts
Class II
CombustibleDusts
Group E -
CombustibleCarbonaceousDusts Group F -
CombustibleDustsnotinGroupEorF
(Flour,Grain,Wood,Plastics,Chemicals)Group G -
CombustibleFibersandFlyingsClass III
FibersandFlyings- -
Equipment Groups [ATEX and IECEx]
Equipment GroupEquipmentCategory
EquipmentProtectionLevel
AtmosphereProtectionLevel
Required ProtectionPerformance & Operation
I(Mineswithfiredamp) M1 Ma Methane&Dust VeryHighTwoFaults,Remain
energised and functioning
I(Mineswithfiredamp) M2 Mb Methane&Dust High
Severe normal operation,
De-energiseinexplosive
atmosphere
II(allotherareas) 1 Ga/Da Gas,Vapour,Mist,Dust VeryHigh Two Faults
II(allotherareas) 2 Gb/Db Gas,Vapour,Mist,Dust High OneFault
II(allotherareas) 3 Gc/Dc Gas,Vapour,Mist,Dust Low Normaloperation
Typical ATEX & IECEx Marking [*ATEX only]
Typical North American Marking (CSA)
Reference toATEX 95 Directive
Serial NumberYear ofCertification
Name of Notified Body performing EC-type examination
SIRA 13 ATEX 1234Gas
Group
DustGroup
TemperatureClass
AreaClassification
AreaClassification
Hazard Class
Hazard Class
Class I, Division 1, Groups A,B,C,D T4
Class II, Division 1, Groups E,F,G
II 2 G*Specific
Marking forExplosionProtection
*EquipmentGroup
*EquipmentCategory
*Environment*Complieswith European
Directives
*NotifiedBody
Number
GasGroup
ProtectionConcept
Code
Approved toUS Standards
TemperatureClass
AreaClassification
Hazard Class
Class I, Zone 0, AEx ia IIC T4
EquipmentProtection Level (EPL)
TemperatureClass (T1-T6)
Gas GroupType ofProtection
ExplosionProtection
Ex d IIC T4 Gb
EquipmentProtection Level
TemperatureClass (°C)
Dust TypeType ofProtection
ExplosionProtection
Ex tb IIIC T135°C Db
Serial NumberYear ofCertification
Name of Body PerformingIECEx Certification
Reference toIECEx Scheme
IECEx CSA 13.1234
Temperature Classification
Classification of maximum surface temperatures
forGroupIIElectronicEquipment(TClass).
IIA T1 Ammonia 630°
IIC T1 Hydrogen 560°
IIA T1 Methane 537°
IIA T1 Propane 470°
IIB T2 Ethylene 425°
IIA T2 Butane 372°
IIC T2 Acetylene 305°
IIA T3 Cyclohexane 259°
IIA T3 Kerosene 210°
IIB T4 Di-ethylEther 160°
IIC T6 CarbonDisulphide 95°
CCSAUS ATEX & IECEx
Suffixes: U – component certification X – special conditions for safe use apply
Ingress Protection CodesFirst Number (protect from solid bodies) Second Number (protect from water)
0 Noprotection 0 Noprotection
1 Objects>50mm 1 Vertical drip
2 Objects>12.5mm 2 Angled drip
3 Objects>2.5mm 3 Spraying
4 Objects>1.0mm 4 Splashing
5 Dust-protected 5 Jetting
6 Dust-tight 6 Powerful jetting
7 Temporary immersion
8 Continuous immersion
°CCSAGrouphasprovidedthetechnicalinformationforthispublication.CSAGroupretainsallintellectualpropertyincludingcopyrightinitswork.
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