| Fault Type | |||||
T1 | T2 | T3 | D1 | D2 | ||
Ratio Symbol | Gas Ratio | Thermal Fault <300˚C | Thermal Fault 300˚C - 700˚C | Thermal Fault >700˚C | Low Energy Discharge | High Energy Discharge |
Dornenburg Ratios | ||||||
R1 | CH4/H2 |
| 1.0 < R1 |
| R1 < 0.1 | 0.1 < R1 < 1.0 |
R2 | C2H2/C2H4 | R2 < 0.75 |
| 0.75 < R2 | ||
R3 | C2H2/CH4 | R3 < 0.3 | R3 < 0.3 | 0.3 < R3 | ||
R4 | C2H6/C2H2 | R4 < 0.4 | 0.4 < R4 | R4 < 0.4 | ||
Roger Ratios | ||||||
R1 | CH4/H2 | 1.0 < R1 | 1.0 < R1 | 1.0 < R1 | R1 < 0.1 | 0.1< R1 <1.0 |
R2 | C2H2/C2H4 | R2 < 0.1 | R2 < 0.1 | R2 < 0.1 | R2 < 0.1 | 1.0 < R2 < 3.0 |
R5 | C2H4/C2H6 | 1.0 < R5 < 3.0 | 1.0 < R5 < 3.0 | 3.0 < R5 | R5 < 1.0 | 3.0 < R5 |