AUSTRALIAN HAZARDOUS AREA SELECTION CHART

1 AUSTRALIAN HAZARDOUS AREA SELECTION CHART GASESZONE 0 Flammable atmosphere continuously present, or present for long periods (more than 1,000 hours per year)ZONE 1 Flammable atmosphere likely to occur in normal operation (more than 10 hours per year, but less than 1,000 hours per year)ZONE 2 Flammable atmosphere not likely to occur and if it occurs will exist only for a short time (less than 10 hours per year) SELECTION OF APPARATUSZONE 0Ex iaEx sIntrinsic safetySpecial protection (approved for Zone 0)ZONE 1Ex dEx ibEx pEx p1Ex mEx eEx vEx sZone 0 protection techniquesFlameproofIntrinsic safetyPressurisation for Zone 1 Purging for Zone 1 EncapsulationIncreased safetyVentilation for Zone 1 Special protection for Zone 1 ZONE 2Ex nEx pEx p1Ex vEx sZone 0 and Zone 1 protection techniquesNon incendivePressurisation for Zone 2 Purging for Zone 2 Ventilation for Zone 2 Special protection for Zone 2 GAS CLASSIFICATIONHYDROGENG roup IICETHYLENEG roup IIBPROPANEG roup IIAMETHANE (MINING)

2 Group I TEMPERATURE CLASSIFICATIONT CLASSM aximum Surface TemperatureT1450 CT2300 CT3200 CT4135 CT5100 CT685 C DUSTSZONE 20 Area in which combustible dust, as a cloud, is present continuously or frequently, during normal operationZONE 21 Area not classified as Zone 20 in which combustible dust, as a cloud, is likely to occur during normal operationZONE 22 Area not classified as Zone 21 in which combustible dust clouds may occur infrequently, and persist for only a short period DUST IGNITION TEMPERATURELAYERM inimum ignition temperature in CCLOUDM inimum ignition temperature in C DUST IGNITION ENERGYCLOUDM inimum energy in mJ SELECTION OF APPARATUSDIPDust-excluding ignition proofEx mEncapsulationEx ia or ibIntrinsic safety* IIA, IIB or IICAt least IP5 XEx pPressurisation* The minimum dust cloud ignition energy to which the equipment will be exposed is higher than 1mJCLASS I AREA CLASSIFICATION CLASS IIType of ProtectionCertification StandardInstallation StandardSAA Wiring Rules-AS 3000-2000 Area Classification-AS (Gases)

3 AS/NZS (Dust)AS (Specific Occupancies)General RequirementsAS d FlameproofAS e Increased SafetyAS i Intrinsic SafetyAS m EncapsulationAS 2431-1981No StandardType of ProtectionCertification StandardInstallation StandardEx n Non IncendiveAS o Oil immersionNo StandardNo StandardEx p PressurisationAS StandardEx q Powder/Sand FillingNo StandardNo StandardEx s Special ProtectionAS 1826-1983AS v VentilationAS 1482-1985No StandardInstrumentationNo StandardAS Dust Ignition ProofAS/NZS GlandsAS 1828-1984No StandardAUSTRALIAN STANDARDS REFERENCEE flare Corporation Pty Ltd Level 1, 222 St Kilda Road, St Kilda.

4 Victoria 3182 AustraliaPhone: +61 3 9525 3366 FREECALL: 1800 232 266 (AUSTRALIA ONLY) Email: EFLARE CERTIFICATIONEx n IIC T4 IP66 AUS EX 3783 XCertified to operate safely in Class I Zone 2 HAZARDOUS AreasComparison of Zone 2 and Division 2 TABLE 1 - AREA CLASSIFICATIONSD ivision 1: Where ignitable concentrations can exist all of the time or some of the time under normal operating 0: Where ignitable concentrations exist all of the time or for long periods of time under normal operating 1: Where ignitable concentrations exist some of the time under normal operating 2: Where ignitable concentrations are not likely to exist under normal operating 2.

5 Where ignitable concentrations are not likely to exist under normal operating of Group IIC and Groups ATABLE 2 - GAS GROUPSD ivision 1 and 2 Zone 0, 1 and 2A (acetylene)IIC (acetylene & hydrogen)B (hydrogen)C (ethylene)IIB (ethylene)D (propane)IIA (propane)Comparison of Temperature Class T6 and Temperature Class T6 TABLE 3 - TEMPERATURE CODESD ivision 1 and 2 Zone 0, 1 and 2T1 (<450 C)T1 (<450 C)T2 (<300 C)T2 (<300 C)T2A, B, C, D (<280 C, <260 C, <230 C, <215 C)----T3 (<200 C)T3 (<200 C)T3A, B, C (<180 C, <165 C, <160 C)----T4 (<135 C)T4 (<135 C)T4A (<120 C)----T5 (<100 C)T5 (<100 C)T6 (<85 C)T6 (<85 C)Eflare Corporation Pty Ltd Level 1, 222 St Kilda Road, St Kilda, Victoria 3182 AustraliaPhone: +61 3 9525 3366 FREECALL: 1800 232 266 (AUSTRALIA ONLY) Email.