Non-Cost Impact Scales
A non-cost impact scale consists of a series of situational descriptions You use it to convert the expected impact of a risk into a simple numerical scale value. A numerical scale value is required if you want to display the risk on a risk matrix.
The number of levels in your scale is determined by the risk matrix size.
Constructing a Scale
When constructing a non-cost impact scale, start at the upper and lower limits of the scale. The upper limit should be defined as the smallest impact which would be considered catastrophic. The lower limit should be defined as the smallest effect which would be noticeable. Intermediate scale definitions can then be filled in as appropriate.
It is strongly recommended that your scales consist of situational descriptions relevant to each particular impact. Using a non-specific scale such as high/medium/low is likely to lead to inconsistent assessments.
Mandrel provides several examples of impact assessment scales which are available via a drop-down list on the form. These scales may be used as given, or they may be edited to suit your own requirements. Sample scales are only available for 6-level scales or smaller.
Associated Cost Scales
All non-cost impact scales can have an associated cost scale.
You may change any non-numeric scale at any time. However, if you do so after making any risk assessments, and the new scale materially alters some of those assessments, you will have to change the affected assessments manually via the Cost Data Entry form to comply with the new scale.