Guide to Explosive Atmospheres & Hazardous Locations

1 Hazardous LocationseBookGuide to Explosive Atmospheres & Hazardous Locations2 Guide to Explosive Atmosheres and Hazardous Locations IntertekWe certify products for compliance with IECEX, the European Union s ATEX Directive, the National electrical Code (NEC) in the and the Canadian electrical Code (CEC) in Canada. Some of the standards we test to include those of CENELEC, CEN, IEC, ANSI, UL, CSA, MIL Specs and offer the Ex Mark and the CE Mark to show compliance with EU requirements for Explosive Atmosphere regulations. Conducting IECEx certification in parallel offers global access for countries outside of North America and Europe. In addition, when your product complies with North American product safety standards, it is eligible to bear our ETL Listed Mark that is fully accepted by Authorities Having Jurisdiction (AHJs) across North is one of only a handful of Notified Bodies that can offer the full scope of ATEX Certification, from large electrical machines to non- electrical approval for Zone 0.

2 We offer: ATEX Notified Body for product testing, assessment, inspection and certification for all equipment ( electrical and non- electrical ), Safety Systems, Components and Protective Devices UKAS Accredited ATEX Certificates IECEx Certificates of Conformity Quality Assurance Notification (ATEX Quality Modules) Quality Assurance Registration (IECEx QA Module) ATEX Technical file review and lodgingIntertek also offer full CE Marking testing and assessment at our in house accredited laboratories, minimising time and cost to market. Our knowledge of CENELEC, CEN, IEC, ANSI, ISA, CSA, MIL Specs and FM standards is second to none We are the Accepted Certification Body and Ex Testing Laboratory within the International IECEx Certification Scheme, which facilitates international trade by eliminating the need for multiple national certifications ETL and cETL Listing, Intertek s certification marks, which are accepted by Authorities Having Jurisdiction (AHJs)

3 Throughout North America, are available based on local testing Intertek s Global Market Access information is constantly being updated through our network of laboratories in over 100 countriesSite Safety ServicesIntertek is a leading expert in DSEAR and ATEX 137 compliance and explosion risk reduction with unique services and global blue-chip client base use Intertek s expertise to implement, train and verify that risk is reduced to acceptable levels and adequately managed thereafter. We provide: High level consultancy including writing specifications for suppliers and users Design control and management of Hazardous area projects Area Classification and DSEAR (ATEX) Risk Assessment Equipment and Plant Inspections Assistance in the design, supply and installation of safety and mitigation systems Full support, service levels agreements and ATEX 137 / DSEAR ComplianceTesting and CertificationFast ComplianceBeing able to test ATEX, CE and IECEx and certify at the same time is always the fastest and least expensive compliance Guide to Explosive Atmosheres and Hazardous Locations3 FAST: Our challenge is to get your products to market faster and safer!

4 We offer an industry busting 2 week pick up time to get your products into test with minimal delay. SPECIALIST: You need to work with a company that has the size, flexibility and credentials to provide you with everything you need in one seamless project. Intertek is here to partner with you from design to final certification. We share our expertise with you to deliver your product to the markets you require, on time and in budget, to train your people and to make your Hazardous Locations : Our Global Hazardous Locations solution has helped many product manufacturers understand the requirements needed to meet customer or market specifications. We have numerous test and assessment Locations world-wide and a large and experienced team with over 50 dedicated Hazardous Locations staff. We are one of the very few providers that can offer Global Access to all Hazardous Locations markets, including our unique GMAP services (Global Market Access Program) and full CE and performance testing has one of the largest dedicated teams of test and certification engineers in the USA and Europe.

5 We react quickly, quote competitively and deliver the highest levels of service is an ATEX Notified Body, DSEAR/ATEX 137 implementation specialist and CompEx Training Centre. We have the largest set of CompEx Training facilities in the UK and have a satellite training facility in Sasolburg South also offers a global training solution with the CompEx mobile facility, designed for our customers outside the UK, we bring the training to CompEx is a recognised qualification for ATEX and IEC electrical installation and inspection. It consists of practical training and assessment in a realistic working environment and is rapidly becoming a required qualification take great pride in the enthusiasm and knowledge of our trainers who can draw from practical experience at all times to keep the courses interesting, relevant and practical. TrainingIn addition to theoretical training, Intertek is the only ATEX Notified Body to also be a licensed CompEx Training Centre.

6 Through our mobile training rigs we can offer a truly global solution to your training to Explosive Atmosheres and Hazardous Locations IntertekTypical ATEX and IECEx Marking [*ATEX only]II 2 G Ex d IIC T4 Gb0359*Complies with European DirectiveEquipment Protection LevelType of ProtectionExplosion Protection*Environment*Equipment CategoryTemperature Class (T1-T6)(and/or T135 C)Group*Specific Marking for explosion Protection*Equipment Group*Notified Body NumberEquipment Group [ATEX and IECEx]Equipment GroupEquipment CategoryEPLA tmosphereProtection LevelRequired Protection Performance & OperationI (Mines with firedamp)M1 MaMethane & DustVery High Two Faults, Remain energised and functioningI (Mines with firedamp)M2 MbMethane & DustHigh Severe normal operation, De-energise in exp. (all other areas)1aGas, Vapour, Mist, DustVery High Two FaultsII (all other areas)2bGas, Vapour, Mist, DustHigh One FaultII (all other areas)3cGas, Vapour, Mist, DustLow Normal operationZoning DefinitionsEquipment Categories & Protection LevelsGasIEC 60079-10-1 DustIEC 60079-10-2 DefinitionsATEX CategoryEquipment Protection LevelsTypical Zone Suitability0A place in which an Explosive atmosphere is continually present1 GGaEquip.

7 Suitable for Zones 0,1,2201 DDaEquip. suitable for Zones 20,21,221A place in which an Explosive atmosphere is likely to occur in normal operation occasionally2 GGbEquip. suitable for Zones 1,2212 DDbEquip. suitable for Zones 21,222A place in which an Explosive atmosphere is not likely to occur in normal operation, but if it does only occus for short periods3 GGcEquip. suitable for Zone 2223 DDcEquip. suitable for Zone 22 Intertek Guide to Explosive Atmosheres and Hazardous Locations5 Protection Concepts [ATEX and IECEx]Type of ProtectionSymbolTypical IEC EPLT ypical Zone(s)IEC StandardBasic concept of protectionElectrical equipment for gases, vapours and mists (G)Optical RadiationOp prOp shOp isGb GaGa1,20,1,20,1,2 IEC 60079-28 IEC 60079-28 IEC 60079-28 Inherently safe protected by shutdownIncreased safetyType n (non-sparking)e nAGbGc1,22 IEC 60079-7 IEC 60079-15No arcs, sparks or hot surfaces.

8 Enclosure IP54 or betterFlameproofType n (enclosed break)dnCGbGc1,22 IEC 60079-1 IEC 60079-15 Contain the explosion , quench the flameQuartz/sand filledqGb1,2 IEC 60079-5 Quench the flameIntrinsic safetyIntrinsic safetyIntrinsic safetyia ib icGaGbGc0,1,21,22 IEC 60079-11 IEC 60079-11 IEC 60079-11 Limit the energy of sparks and surface temperaturesPressurisedPressurisedPressu risedType n (sealing & hermetic sealing)Type n (restricted breathing)EncapsulationEncapsulationEnca psulationOil immersionpx pypznCnRmambmcoGbGbGcGcGcGaGbGcGb1,21,22 220,1,21,221,2 IEC 60079-2 IEC 60079-2 IEC 60079-2 IEC 60079-15 IEC 60079-15 IEC 60079-18 IEC 60079-18 IEC 60079-18 IEC 60079-6 Keep the flammable gas outElectrical equipment for combustible dusts (D)EnclosuretDa20,21,22 IEC 60079-31 Standard protection for dusts, rugged tight enclosureIntrinsic safetyiDDa20,21,22 IEC 61241-11 Similar to t, but with some relaxations if circuit inside is intrinsically safeEncapsulationmaDDa20,21,22 IEC 61241-18 Protection by encapsulation of incendive partsmbDDb21,22 PressurisedpDDb21,22 IEC 61241-2 Protection by pressurisation of enclosureDc22 Non- electrical equipmentGeneral - - 0,1,2EN 13463-1 Low potential energyFlow restricted enclosure flameproof enclosurefr d - -2 1,2E N 1 3 4 6 3 - 2 EN 13463-3 Relies on tight seals, closely matched joints and tough enclosures to restrict the breathing of the enclosureConstructional safetyc - 0,1.

9 2EN 13463-5 Ignition hazards eliminated by good engineering methodsControl of ignition sourcesb - 0,1,2EN 13463-6 Control equipment fitted to detect malfunctionsPressurisationp - 1,2*EN 13463-7 withdrawn & replaced by use of IEC60079-2 Enclosure is purged and pressurised to prevent ignition sources from arisingLiquid immersionk - 0,1,2EN 13463-8 Enclosure uses liquid to prevent contact with Explosive atmosphere6 Guide to Explosive Atmosheres and Hazardous Locations IntertekTemperature ClassificationMax. Surface TemperatureNEC 500 CEC NEC 505 IEC - Group II450 C (842 F) T1T1T1300 C (572 F)T2T2T2280 C (536 F)T2A260 C (500 F)T2B230 C (446 F)T2C215 C (419 F)T2D200 C (392 F)T3T3T3180 C (356 F)T3A165 C (329 F)T3B160 C (320 F)T3C135 C (275 F)T4T4T4120 C (248 F)T4A100 C (212 F)T5T5T585 C (185 F)T6T6T6 Note: For Group I (CENELEC/IEC) applications, electrical apparatus has fixed temperature limits , 150 C and 450 StandardsTopicIEC StandardArea Classification - Gases, Vapours and MistsIEC 60079-10-1 Area Classification - Combustible DustsIEC 60079-10-2 electrical Equipment InstallationIEC 60079-14 electrical Equipment Inspection and maintenanceIEC 60079-17 electrical Equipment Repair and OverhaulIEC 60079-19 Groups [ATEX and IECEx]GroupEnvironmentLocationTypical SubstanceIGases, Vapours and Coal DustCoal MiningMethane (Fire damp)

10 IIAG ases, Vapours and MistsSurface and other locationsMethane, Propane , Acetylene DustsSurface and other locationsCombustible flyingsIIIBNon-conductiveIIICC onductiveIntertek Guide to Explosive Atmosheres and Hazardous Locations7 Typical NEC MarkingNEC 500 NEC 505 Class I, Zone 0, AEx ia IIC T4 Hazard ClassProtection Concept CodeArea ClassificationApproved to US StandardsClass I, Division 1, Groups A&B T4 Temperature ClassGas GroupHazard ClassArea ClassificationTemperature ClassGas GroupProtection Concepts [North America]Type of ProtectionUSAC anadaBasic Concept of ProtectionNEC 500 NEC 505 ExistingNewArea ClassificationCodeArea ClassificationCodeIncreased SafetyNon-IncendiveNADivision 2 Zone 1, 2 Zone 2 AEx eAEx nNADivision 2 Zone 1, 2 Zone 2Ex eEx nNo arcs, sparks, or hot surfacesFlameproofExplosionproofPowder FilledNADivision 1,2 NAZone 1, 2 NAZone 1, 2 AEx dNAAEx qNADivision 1,2 NAZone 1, 2 NAZone 1, 2Ex dNAEx qContain the explosion , prevent flame propagationIntrinsic SafetyDivision 1,2 NAZone 0,1,2 Zone 1, 2 AEx iaAEx ibDivision 1,2 NAZone 0,1,2 Zone 1, 2Ex iaEx ibLimit the spark energy and temperatures Pressurized (Purged)EncapsulationOil ImmersionDivision 1,2 NADivision 2 Zone 1, 2 Zone 1, 2 Zone 1, 2 AEx pAEx mAEx oDivision 1,2 NADivision 2 Zone 1, 2 Zone 1, 2 Zone 1, 2Ex pEx mEx oExclude gas from ignition sourcesNote.