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Hazardous Locations Classifications Descriptions
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Class
1, Div. 1 - Where ignitable concentrations of flammable gases,
vapors or liquids can exist all of the time or some of the time
under normal operation conditions. |
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Class
1, Div. 2 - Where ignitable concentrations of flammable gases,
vapors, or liquids are not likely to exist under normal operating
conditions. |
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Class
2, Div. 1 - Where ignitable concentrations of combustible
dusts can exist all of the time or some of the time under normal
operation conditions. |
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Class
2, Div. 2 - Where ignitable concentrations of combustible dust
are not likely to exist under normal operating conditions. |
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Class
3, Div. 1 - Where easily ignitable fibers or materials
producing combustible flyings are handled, manufactured or used. |
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Class
3, Div. 2 - Where easily ignitable fibers are stored and
handled. |
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Groups:
A (acetlyene), B (hydrogen), C (ethylene), D (propane) |
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Groups:
E (metals - div. 1 only), F (coal), G (grain). |
| Product |
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Groups |
| Emergency
Units |
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| Z |
Class 1, Division 2 |
A,
B, C, D |
| ZX |
Class 1,
Division 1 |
C,
D |
| ZX |
Class 1,
Division 2 |
C,
D |
| ZX |
Class 2,
Division 2 |
F,
G |
| ELA
ZX |
Class 1,
Division 1 |
C,
D |
| ELA
ZX |
Class 1,
Division 2 |
C,
D, F, G |
| ELA
ZX |
Class 2,
Division 1 |
E,
F, G |
| ELA
ZCD |
Class 2,
Division 1 |
E,
F, G |
| Exit
Units |
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| LZ |
Class 1,
Division 2 |
A,
B, C, D |
| LZ |
Class 2,
Division 2 |
F,
G |
| LHZ |
Class 1,
Division 2 |
A,
B, C, D |
| LHZ |
Class 2,
Division 2 |
F,
G |
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