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:training@siraconsulting.com

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

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

Class I

Division1&2

Zone 1 & 2

FM3600

ISA60079-0

CSA60079-0

Increased

Safety

Class I

Zone 1

ISA60079-7

CSAC22.2No.60079-7

Noarcs,sparks

or hot surfacesNon-Incendive

Class I

Division2

ISA12.12.01/FM3611

C22.2No.213

Non-SparkingAEx nA

Class I

Zone 2

ISA60079-15

CSAC22.2No.60079-15

Explosion Proof(XP)

Class I

Division1

UL1203/FM3615

C22.2No.30

Contain the

explosion and

extinguish the

Flameproof

Class I

Zone 1

ISA60079-1

UL1203/FM3615

CSA60079-1

Powder FilledAEx q

Class I

Zone 1

ISA60079-5

CSAC22.2No.60079-5

EnclosedBreakAEx nC

Class I

Zone 2

ISA60079-15

CSAC22.2No.60079-15

Intrinsic Safety

AEx ia

Class I

Division1

Zone 1

UL913/FM3610

C22.2No.157

ISA60079-11/FM3610

CSAC22.2No.60079-11

Limitenergy

of sparks

and surface

temperature

LimitedEnergyAEx nC

Class I

Zone 2

ISA60079-15

CSAC22.2No.60079-15

Pressurised

Type X

Type Y

Type Z

AEx px

AEx py

Class I

Division1

Division2

Zone 1

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

flammable

gas out

Restricted

Breathing

Class I

Zone 2

ISA60079-15

CSAC22.2No.60079-15

Encapsulated

AEx ma

Class I

Zone 1

ISA60079-18

CSAC22.2No.60079-18

ISA60079-18

OilImmersionAEx o

Class I

Zone 1

ISA60079-6

CSAC22.2No.60079-6

Electrical Equipment for Combustible Dust and Fibres - Class II / Class III

General

RequirementsEx

Class II

Class III

Division1&2

Zone20,21,22

FM3600

CSAC22.2No.0

FM3600

CSAC22.2No.0

ISA60079-0

DustIgnition

Proof-

Class II

Division1

UL1203/FM3616

CSAC22.2No.25

combustible

dust out

DustProtected -US

Class II

Division2

ISA12.12.01/FM3611

CSAC22.2No.25

Protectionby

Enclosure

AEx ta

AEx tc

Class II

Zone20

Zone 21

Zone 22

Zone20

Zone 21

Zone 22

ISA60079-31

CSAC22.2No.60079-31

Fiber&Flying

Protection

Class III

Division1&2

UL1203/ISA12.12.01

CSAC22.2No.25

EncapsulationAExmaD

AExmbD

Zone20

Zone 21

ISA60079-18

Pressurisation

Class II

Division1

Division2

Zone 21

NFPA496(FM3620)

NFPA496

NFPA496(FM3620)

NFPA496

NFPA496(FM3620)

NFPA496

ISA61241-2

Intrinsic Safety

AExiaD

AExibD

Class II

Class III

Division1

Zone20

Zone 21

Division1

UL913/FM3610

CSAC22.2No.157

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)

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)

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

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

Gases, Vapours

CoalMining Methane(Firedamp)

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

Di-ethylether,Ethylene,Methylethylketone

(MEK),Propan-1-ol(n-propylalcohol),Ethanol

(ethylalcohol)

IIC Acetylene,Hydrogen,Carbondisulphide

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

A place in which an explosive atmosphere is

continuously present

Intermittent

hazardDivision1

Zone1/Zone21

likely to occur in normal operation

Hazardunder

abnormalconditionsDivision2

Zone2/Zone22

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)

Grain dust

Methylcellulose

Phenolic resin

Polythene

Starch

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

DustGroup

TemperatureClass

AreaClassification

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

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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