The Criticality and Probability Default Values will be prepared for you by Cenosco, since a CSA role is required. To make changes to these settings please contact Support.
Setting up the Management Systems Factor (FMS)
The Management Systems Factor (FMS) can by calculate per Site/Plant/Unit in Settings\Maintenance\RBI 581Specific Data\Criticality and Probability Default Values.
For more information on the FMS see RBI 581 Methodology.
Specifying which Risk Calculation Method to use
Two Risk Calculation Methods are available for the RBI 581 assessment:
Risk Matrix (Balanced or Unbalanced).
To specify which to use:
Click the Edit button.
Select the Risk Calculation Method: “Risk Matrix” or “ISO Risk Plot”.
Select additional details:
In case the “Risk Matrix” is selected check Risk Matric Balanced in case the Balanced matrix is desired. If not checked, the Unbalanced matrix will be used for the site’s RBI 581 calculations. Also select the Risk Target Criteria.
Selecting “ISO Risk Plot” disables Risk Matrix Balanced and Risk Target Criteria fields, and instead requires defining: Area Acceptable Risk Target and Economic Acceptable Risk Target. These values will be used in ISO‑based MII and future‑risk calculations and will be shown in the assessment when ISO Risk Plot calculation method is enabled.
Click Save.
Caution
Only users with the CSA role can modify these settings.
Specifying the Risk Target Criteria
To specify which to use:
Click the Edit button.
In case the “Risk Matrix“ is selected, then select the relevant Risk Target Criteria. In case the “Iso Risk Plot“ is selected, specify the rea Acceptable Risk Target and Economic Acceptable Risk Target instead.
Click Save.
In addition to the above you can specify the Legal / Local Inspection Interval Target. This is specified per Analysis on the Risk Tab.