The PxD matrix

The matrix is a Cartesian grid:

• Damage (D) on the X axis — how severe the consequences are if the event happens;
• Probability (P) on the Y axis — how likely the event is to happen.

The scales

Both are rated from 1 to 9.

Axis	From	To
Probability	Unlikely	Very likely
Damage	Minor	Very severe

The colours

Each risk value carries a colour, which indicates the severity and therefore the priority for action.

Colour	Severity
Blue	very low
Green	low
Yellow	medium
Orange	high
Red	very high

The full legend, with the corresponding values and intervention priorities, is available by hovering the question mark icon next to Risk matrix.

The three values in the risks list

Value	Meaning
Initial risk	before the mitigation actions
Variation	the effect of the actions
Final risk	the residual risk, after the actions

All three are 0 for a risk that has been entered but not assessed.