RISO labs (Riso National Laboratory: 307-312) developed CCA (Cause consequence analysis) which is essentially a fault tree based approach. It is commonly used for analysis of security and safety problems. CCA and fault trees can be easily applied to almost any technology or system (Keong, 2004).
The tree based approach involves the following steps:
- Identify an event
- Determine the underlying causes of the event.
- For each underlying cause identify the causes or initiating events.
- Repeat until the underlying cause becomes uncontrollable
The CCA process is repeated until the final underlying cause is beyond the organisation’s control (whether through cost or other factors).
Thus the process ends when there is no value in continuing to decompose the problem further.