Table 1.
Typical faults and their occurrence probabilities in the system.
| Faults | Description | Consequences | Probabilities |
|---|---|---|---|
| F2 | Steam drum full of water | Inlet reduced heavily | 0.1 |
| F3 | Lack of water in steam drum | Water level decreases gradually | 0.05 |
| F4 | Fire extinguishment | All the gas muzzles are extinguished; pressure and temperature of the stream decrease | 0.01 |
| F5 | Power off | A series of complex phenomenon | 0.001 |
| F6 | Failure in the cooler | Temperature of overheated steam reduces; cooling water reduces abnormally, etc. | 0.001 |