Table 2.
Fault description.
| Fault index | Type | Time delay | Number of samples | Description |
|---|---|---|---|---|
| Fault1 | Step | None | 600 | A/C feed ratio, B composition constant |
| Fault2 | Step | None | 600 | B composition, A/C ratio constant |
| Fault3 | Step | None | 600 | D feed temperature |
| Fault4 | Step | 40 minutes | 600 | Reactor cooling water inlet temperature |
| Fault5 | Step | 40 minutes | 600 | Condenser cooling water inlet temperature |
| Fault6 | Step | 40 minutes | 600 | A feed loss |
| Fault7 | Step | 40 minutes | 700 | C header pressure loss-reduced availability |
| Fault8 | Random | 40 minutes | 600 | A, B, C feed composition |
| Fault9 | Random | 40 minutes | 600 | D feed temperature |
| Fault10 | Random | None | 600 | C feed temperature |
| Fault11 | Random | None | 600 | Reactor cooling water inlet temperature |
| Fault12 | Random | 50 | 700 | Condenser cooling water inlet temperature |
| Fault13 | Slow drift | None | 600 | Reaction kinetics |
| Fault14 | Sticking | 40 minutes | 600 | Reactor cooling water valve |
| Fault15 | Sticking | None | 600 | Condenser cooling water valve |
| Fault16 | Unknown | 40 minutes | 700 | Unknown |
| Fault17 | Unknown | 40 minutes | 600 | Unknown |
| Fault18 | Unknown | None | 600 | Unknown |
| Fault19 | Unknown | None | 600 | Unknown |
| Fault20 | Unknown | None | 600 | Unknown |
| Normal | — | — | 17700 | A/C feed ratio, B composition constant |