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Atex Introductie Clemens Duyvesteijn ExxonMobil Chemical / Refining.

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Presentatie over: "Atex Introductie Clemens Duyvesteijn ExxonMobil Chemical / Refining."— Transcript van de presentatie:

1 Atex Introductie Clemens Duyvesteijn ExxonMobil Chemical / Refining

2 Δ H A C (substantial modi fication ATEX 137) New classified areas (NGG  zone) areas w/changed classification (zone, T, group) Substantial modification V V I s Unchanged area classification VVI issued after inspection Review against CENELEC / ATEX 95 standards modifications possible V V I s In zone 0,1 resp 20,21 immediate replacement review mainte- nance manage ment system (all zones) In zone 2, 22 immediate check electrical equipment In zone check marking

3 Non-electrical equipment H A C FMEAs based on EN 1127 and failure mode heuristic V V I s zone 2 zone 22 zone zone Generic IHAs for II A,B + T6 Check during maintenance V V I s FMEA for IIC Immediate Check V V I s

4 Portable equipment z o n e z o n e 0 becomes a temporary workplace J S A + foreseeable malfunctions no V V I review of spec + working / maintenance instructions against intended use by an Expert I no V V I ATEX Expert I Temporary EPD A V I E P D

5 Ignition Sources Hot surfaces Hot surfaces Flames and hot gases Flames and hot gases Mechanically generated sparks Mechanically generated sparks Stray Electrical currents Stray Electrical currents Static electricity Static electricity Lightning Lightning Radio frequency (RF) Ignition Radio frequency (RF) Ignition Ultrasonic Ultrasonic Adiabatic compression and shock waves Adiabatic compression and shock waves Exothermic reactions (incl. self ignition of dusts) Exothermic reactions (incl. self ignition of dusts) ATEX 137

6 Apparatuur indeling volgens OREDA Machinerie Machinerie Elektrische apparatuur Elektrische apparatuur Mechanische apparatuur Mechanische apparatuur Instrumentatie en beveiliging Instrumentatie en beveiliging

7 Generiek Machinerie volgens OREDA (zone 2) Soort ExxonMobil typical% Soort ExxonMobil typical% CompressorenReciprocating45 CompressorenReciprocating45 GasturbinesStoomturbine99 GasturbinesStoomturbine99 PompenCentifugaal66 PompenCentifugaal66 VerbrandingsmotorenGas91 VerbrandingsmotorenGas91 Turbo expanders Turbo expanders

8 Generiek Mechanische Apparatuur (zone 2) Warmtewisselaars Warmtewisselaars Leidingen Leidingen Filters Filters Reactoren Reactoren Destilatiekolommen Destilatiekolommen Tanks Tanks

9 Generieke overige apparatuur (zone 2) Afsluiters Afsluiters Mixers Mixers Centrifuges Centrifuges Hulpsystemen (voor pompen, compressoren etc) Hulpsystemen (voor pompen, compressoren etc)

10 Belangrijkste resultaten voor zone 2 equipment Nader onderzoek voor hete oppervlakken Nader onderzoek voor hete oppervlakken Confirm that diesel driven pumps are located in a Non Hazardous Area Confirm that diesel driven pumps are located in a Non Hazardous Area Anti static belts used to replace current belts. Confirm all belts are alredy replaced by anti-static type. Anti static belts used to replace current belts. Confirm all belts are alredy replaced by anti-static type. LP steam used for tracing. Electrical tracing is Ex certified LP steam used for tracing. Electrical tracing is Ex certified

11 Specific Ignition Hazard Assessment ROP 4 Items ROP 4 Items RAP 8 Items RAP 8 Items RAF 25 Items RAF 25 Items Mainly pumps in confined spaces (Waste Water Treatment Plant) Mainly pumps in confined spaces (Waste Water Treatment Plant)

12 Specific IHA Procedure Collect data (BOM) Collect data (BOM)

13 Identify Ignition sources

14 Identify Faulures

15 Evaluate Likelihood and Duration

16 Determine suitable zone

17


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