WebTABLE 3-1 Maximum Surface Temperatures Equipment (e.g.' Motors or Power Transformers) Subject to Overloading Equipment Not Normal Abnormal Class II Subject to Overloading Operation Operation Group °C OF °C OF °C OF E 200 392 200 392 200 392 F 200 392 150 302 200 392 G 165 329 120 248 165 329 The method employed to measure dust … Web9 Mar 2012 · dust cloud likely to be present occasionally in normal operation: Zone 22: dust cloud unlikely to occur in normal operation, but if it does, will only exist for a short period ... Temperature Class IEC NEC/CEC; Inflammable material Zone Group Class Division Group; Gas and Vapours; Acetylene: 0,1 or 2: II C: I: 1 or 2: A: Hydrogen: 0,1 or 2: II ...
Dust explosion physical properties (ATEX) : overview
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EXPLOSION PROTECTION - TECHNICAL PRINCIPLES
WebDust tight enclosure, limited surface temperature Limit the potential ignition energy and surface temperatures. May add ingress requirements Keep the flammable dust out … WebTable 1 : ATEX dust zone classification chart. The zoning is fundamental to help the process operator to put in place the measures necessary to reduce the risks of inflammation of a … WebZone 0 (Gas) or Zone 20 (Dust): Very probable (Permanent or for long periods of time) Zone 1 (Gas) or Zone 21 (Dust): Probable (Occasional during normal operation) Zone 2 (Gas) or Zone 22 (Dust): Not probable (Very occasional and short-lived periods) zone 0 zone 1 zone 2 Cyclone Sleeve filter zone 22 zone 20 zone 21 teamcity signup