Hi Eng's, I could need your help
Hi Eng's, I could need your help
(OP)
Hi Eng's,
I could need your help with finding standards/regulations about the classification of hazardous areas (WWTP, Sewers, Pumpstations etc.) in Canada and US - if there are differences. Just need to know which class/div applies to which area. Thanks!
I could need your help with finding standards/regulations about the classification of hazardous areas (WWTP, Sewers, Pumpstations etc.) in Canada and US - if there are differences. Just need to know which class/div applies to which area. Thanks!





RE: Hi Eng's, I could need your help
www.nfpa.org
The following are examples the hazardous locations.
CLASS I
(Gases and Vapors)
(examples) NEC 500-503 NEC 505
Acetylene Group A IIC
Hydrogen Group B IIC or IIB+H2
Ethylene Group C IIB
Propane Group D IIA
CLASS II
(Dusts)
(examples) NEC 505-503
Metal dust Group E
Coal dust Group F
Grain dust Group G
CLASS III
(Fibers & Flyings)
(examples) NEC 505-503
Wood,paper or
cotton processing. No sub-groups
RE: Hi Eng's, I could need your help
RE: Hi Eng's, I could need your help