Table 3. Example of hazard matrix for hydropower plant showing hazards and required protective measures (Emergency classification: A: internal alert; B: developing situation; C: imminent situation)
HAZARDS |
Rehabi-litation |
Partial reservoir drawdown |
Full reservoir drawdown |
Evacuation |
Post-event evacuation |
Floods |
A |
B |
|
C |
|
Ice problems |
A |
|
|
|
|
Earthquake |
|
|
|
|
C |
Storm and lightning |
A |
|
|
|
|
Abnormal instrumentation readings |
A |
B |
|
C |
|
Spillway gates and equipment failure |
|
|
C |
C |
|
Joint failure |
A |
|
|
C |
|
Differential movement of structure |
A |
B |
C |
C |
|
Embankment piping or seepage |
A |
B |
C |
|
|
Electrical/mechanical failure and power plant shut-down |
A |
|
|
|
|
Fire |
A |
B |
|
|
|
Oil or hazardous material release |
A |
|
|
|
|
Criminal action, sabotage, terrorism, acts of war |
|
B |
|
|
C |
Human error |
A |
|
|
|
|