| | |
| |
|
|
An accident can be looked at as a chain of undesirable events (occurrences).
The presence of contributing factors will influence the course of the accident.
When there are no factors, the chain of events may stop (near miss).
Once the necessary factors have been triggered the accident, after some time 'the point of no return' is reached and the accident becomes inevitable.
The accident model, which is used for FACTS to code the collected accidents, is based on a chain of events (occurrences). This is a simplified scheme.
|
| Event 1: Occur Wrong- action → Typing error in recipe |
Eqinv: Reactor: Hp 1 diels-alders reaction
Eqappl: Resin polymerization (d.a.)
Press: Design pressure 2000/Kpa
Temp: Design temperature 315/c
Eqmade: L.qmc 52
Eqdate: 1959
Ect.
|
 |
| Event 2: Occur Pump- over → from tank nr. 634 to reactor
|
|
| ← Technical information ← |
|
| Event 3: Occur Wrong- composition → Too high concentration of DCPD
|
|
|
| Event 4: Occur Run- away- reaction, Occur Overheating |
Information about the equipment, chemicals and specific circumstances involved can be mentioned for each specific event.
Examples of accident abstracts that describe several events in an accident chronologically are presented in the FRIENDS accident information viewer
|
|
|
← Point of no return
|
|
| Event 5: Occur Overpressure |
|
|
| Event 6: Occur Explosion (several) |
|
|
Final: 3 Fatals (fireman), 11 Injuries (7 workers, 4 fireman)
Click here to see all properties and values with which the accidents are modeled.
|
| |
| | |