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Proactive Risk Analysis
Divide the process subprocesses
or steps
Describe each of the
steps/equipment
Select one subprocess
Define the failure mode that
can have that step or
subprocess
Examine the causes of the
failure mode
Evaluate the consequences
caused by the failure mode
Estimate Risk
Evaluate the
defences
that are in
place so that in case of failure the
security is not affected
Propose actions
Select another failure mode
and repeat the process
Select another step or
subprocess and repeat
Select another system or
process and repeat
Select one process
Simulation
Patient
immobilization:
head mask
Temperature of the bath
Two persons needed only one
present
Different position between
planning and treatment
delivery: Underdosing PTV
Verification of
immobilisation first day
Imaging
The mask is not
well done (does
not adapt well)