General Reference

The values that appear on the baseline Risk Matrix come from values that are stored in records in the following families:

• Risk Matrix
• Risk Category
• Consequence
• Probability
• Risk Threshold
• Protection Level

The following diagram illustrates the families that are used to create a Risk Matrix and how they are related to one another in the baseline Predix Essentials database. Predix Essentials leverages its fundamental entity and relationship family infrastructure to store data about the Risk Matrix.

Site Filtering helps users who are assigned to specific sites find relevant records more easily by preventing users from viewing records associated with sites with which they are not associated. Site Filtering uses a Site Reference Key on families that have site filtering enabled.

Entity families in Predix Essentials, including Equipment and Functional Locations, store the Site Reference Key in the system field MI_SITE_KEY. In the following image, you can see that entity families are related to a Site Reference via the MI_SITE_KEY system field. Each Site Reference is related to a Risk Matrix by the Has Risk Matrix relationship family.

Suppose the internal matrix that your company uses to evaluate safety risk looks like this:

You want to begin using Predix Essentials Asset Strategy Management to create Asset Strategies and evaluate risk, and the baseline Predix Essentials Risk Matrix that will be used in ASM looks like this:

You could modify the baseline Risk Matrix so that the probability and consequence labels more closely resemble the Risk Matrix that you are familiar with.

To do so, in the Risk Matrix record, you would need to:

• Select the Hide Numeric Risk Rank check box, which hides the probability values 0.0001 through 1 and consequence values 1 through 1000 from the Risk Matrix.
• Select the Use Maximum Risk Rank check box, which causes the total risk rank value to be the maximum risk rank across all categories (tabs) versus the sum of all risk rank values.
• Select the Use Aliases check box, which allows you to define your own custom labels.
• Type the text {r}{c} in the Alias Format Mask text box.

Then, in the Probability and Consequence records that are linked to the Safety Risk Category record, you would need to create aliases to specify the labels that you want to see in the Risk Matrix. Specifically, you would need to:

• Specify the probability values A through E in the Alias field in the Probability records. For example, in the Unlikely Probability record with the Probability value 0.0001, you would type A in the Alias text box.

  If you were to view the Risk Matrix, you would see a row with the label Unlikely A, as shown in the following image.

  

  In each remaining Probability record, you would specify the aliases B, C, D, and E.

• Specify the consequence values 1 through 5 in the Alias field in the Consequence records. For example, in the Very High Consequence record with the Consequence value 1000, you would type 5 in the Alias box.

  If you were to view the Risk Matrix, you would see a column with the label Very High 5, as shown in the following image.

  

  In each remaining Consequence record, you would specify the aliases 2, 3, 4, and 5.

When you finished defining the aliases, the completed Safety section in the Risk Matrix would look like this:

When you create or modify certain records linked to a Risk Matrix record, the values that you can select in the Name and Description lists are defined by System Code Tables. The following table lists these records and the corresponding tables.

You can modify or add new entries to these System Code Tables via the System Codes and Tables page within the Risk Matrix Admin section of the application.

For each entry in a System Code Table that defines the Name list, there must be a corresponding entry (i.e., an entry with the same ID) in the System Code Table that defines the Description list. After you select a value in the Name box, the Description box is populated automatically with the value defined by the corresponding system code.

Example

When you create a new Probability record, suppose that the following list appears in the Name box.

These values are defined in the MI_RISK_PROBABILITY System Code Table, where the values that appear in the Name list are the Descriptions for each System Code.

Further, after you select a value in the Name box, the Description box is populated automatically. The value that is populated is specified by the entry in the MI_RISK_PROBABILITY_DESC table that contains the same ID as the selected entry in the MI_RISK_PROBABILITY System Code Table, where the value populated is stored in the Description field of the System Code.

For example, suppose you create a new Probability record and select Frequent in the Name box. The Description box is populated automatically with the text Likely to occur more frequent than mission time.

The following System Code in the MI_RISK_PROBABILITY System Code Table represents the value Frequent.

The following System Code in the MI_RISK_PROBABILITY_DESC System Code Table has the same ID. The value from this System Code is used to populate the Description box for the Probability record with the text Likely to occur more frequent than mission time.

You can configure each Risk Matrix to display values in certain places to guide users in selecting the appropriate risk values.

Values in a Risk Matrix are determined as follows:

• The Risk Matrix as a whole that appears in the Risk Assessment window is specified by a Risk Matrix record. Risk Matrix records store the values that determine how the Risk Matrix looks. Some of the values in a Risk Matrix record are also used to filter the values that you can select in other records in the Risk Matrix data model.
• Each tab in the Risk Assessment window is specified by a Risk Category record linked to the Risk Matrix record.
• Within the Risk Matrix that appears upon selecting given tab, each row identifies a probability level associated with the matrix. Each probability level is specified by a Probability record. The Risk Category record to which the Probability record is linked determines the section in which the row will appear.
• Within the Risk Matrix that appears upon selecting a given tab, each column identifies a consequence level associated with the matrix. Each consequence level is specified by a Consequence record. The Risk Category record to which the Consequence record is linked determines the section in which the column will appear.
• Within each Risk Matrix, each cell contains a color and a tooltip that explains the threshold within which the risk value falls. The threshold values and corresponding colors are specified by Risk Threshold records that are linked to the Risk Matrix record.

Example

Consider the following Risk Matrix.

The values shown in this Risk Matrix are determined by the following records:

• Risk Matrix records: Determines the look of the Risk Matrix, such as the appearance, order, and axis on which the probability and consequence values appear.
• Risk Category records: There are 4 Risk Category records linked to the Risk Matrix record shown: Safety, Environment, Operations, and Financial. Each Risk Category record corresponds to one tab within the Risk Assessment window. The image shown above displays the values in Probability and Consequence records that are linked to the Safety Risk Category record.
• Probability records: There are 5 Probability records linked to the Environment Risk Category record. Each Probability record corresponds to one row in the Risk Matrix.

  The Probability record for the first row shown in this example contains the following values:

  • Name: Probable
  • Value: 1

  • Description: Likely to occur the same as mission time

    Note: This value appears as a tooltip when you pause over the row heading.

• Consequence records: There are 5 Consequence records linked to the Environment Risk Category record. Each Consequence record corresponds to one column in the Risk Matrix.

  The Consequence record for the first column shown in this example contains the following values:

  • Name: Very Low
  • Value: 1

  • Description: None to minor first-aid

    Note: This value appears as a tooltip when you pause over the column heading.

• Risk Threshold records: There are 5 Risk Threshold records linked to this Risk Matrix record. Each Risk Threshold record corresponds to a range of values that are represented with the same color in the matrix, as well as the risk threshold value that appears when you pause on a cell in the matrix.

  The Risk Threshold record representing the cell in this example contains the following values:

  • Description: Medium
  • Value: 1
  • Color: PaleGoldenrod
    Note: Risk Threshold records represent a range of values. Refer to the topic About Risk Threshold Records for more information about how Risk Threshold records are used.

Each Risk Matrix is linked to multiple Risk Threshold records, where each Risk Threshold record corresponds to a range of values that are represented with the same color in the matrix, as well as the risk threshold value that appears when you pause on a cell in the matrix.

When you select a tab on the Risk Matrix, the cells in the matrix are shaded according to the value in that cell and where it falls within the ranges as they are defined in the Risk Threshold records. For example, in the following image, you can see that the cells contain in the number 0.1 and 0.01 are colored LightGreen. If you pause on the cell, the tooltip says Low.

The following Risk Threshold records are provided in the baseline Predix Essentials database to support the baseline Risk Matrix.

From the values in these records, we can determine that the following criteria will be applied to numbers that appear on the baseline Risk Matrix:

• Any number greater than or equal to 0 and less than 1 will be considered low risk. Cells in the matrix that contain numbers greater than or equal to 0 and less than 1 will be shaded LightGreen.
• Any number greater than or equal to 1 and less than 10 will be considered medium risk. Cells in the matrix that contain numbers within this range will be shaded PaleGoldenrod.
• Any number greater than or equal to 10 and less than 100 will be considered high risk. Cells in the matrix that contain numbers within this range will be shaded LightSalmon.
• Any number greater than or equal to 100 and less than 1000 will be considered very high risk. Cells in the matrix that contains numbers within this range will be shaded Salmon.
• Any number greater than or equal to 1000 will be considered extreme risk. Cells in the matrix that contains numbers greater than or equal to 1000 will be shaded IndianRed.

The baseline Predix Essentials database contains two Risk Matrices:

• Standard Practice
• Default

The following image shows the Standard Practice Risk Matrix.

The Standard Practice Risk Matrix consists of a Risk Matrix record and the following additional records:

• 4 Risk Category records: Safety, Environment, Operations, and Financial.
• 5 Consequence records: Very Low, Low, Medium, High, and Very High.

  In the baseline Predix Essentials database, each Consequence record is linked to the following Risk Category records: Environment, Operations, Safety. The Risk Category record Financial is not linked to a Consequence record.

• 8 Probability records: Frequent, Probable, Likely, Credible, Remote, Possible, Improbable, Unlikely.

  5 of these Probability records are linked to each Risk Category record, as shown in the following table.

  Safety	Environment	Operations	Financial
  Probable	Probable	Frequent	Frequent
  Credible	Credible	Probable	Probable
  Remote	Remote	Likely	Likely
  Improbable	Improbable	Credible	Credible
  Unlikely	Unlikely	Possible	Possible

• 5 Risk Threshold records: Low, Medium, High, Very High, and Extreme.