Transcription of ClassificationofChemicals - Protectoseal
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ClassificationofChemicals - Protectoseal
ClassificationofChemicalsFlame&Detonatio nArresterSpecificationsPROTECTOSEAL The Pr ote ctoseal Company recommend s that the NationalElectricCod e (NEC)Ar ticle 500,rankingsof var ious chemi-cals be used , wh enev er possible,to determinethe suitabilityof a det onat ion arr est er for use wit h a particularche no NECrat ing of the par ticularchemicalis available,the Int ern ation al Elect rote chnicalCommission(IEC ) classifica-tion (Gr oup s IIA, IIB and IIC ) is recommendedas a seco ndarysourceof information for det erminingthe sui tabi lity of an ar -res ter for it s int en ded serv ice. In general, the IEC GroupIIA isequivalen t to th e NEC GroupD; the IEC GroupII B is equiva-lent to the NEC Gr oup C; and the IEC GroupII C incl ud eschemicalsin the NECG roup s A and B.
Page6 ClassificationofChemicals Flame&DetonationArresterSpecifications CHEMICAL IEC GROUPING NEC GROUPING CONFLICT RESOLUTION MESG IEC 79-1 Methanol GroupIIA GroupD ...
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