Loss Scenario Table

This is the table to analyze the HCF (Hazard Causal Factor) related to a specific UCA. The Loss Scenario Table is created under the project.

Loss Scenario Table

Creating the Loss Scenario Table

To create an Loss Scenario table, specify the analysis target UCA.

When the menu [Diagram] - [STAMP/STPA] - [Loss Scenario Table] is selected, or the menu [STPA Analysis Procedure] - [STEP 4 Identify Loss Scenario] - [Loss Scenario] is double-clicked, specify the UCA in the Select UCA dialog.

On the left of the UCA which created the Loss Scenario Table, the circle symbol is displayed.

Specifying the UCA

Hint Word Set

Select the Hint Word Set from the drop-down list of the Hint Word Set.

The specified Hint Word Set will be reflected in all the HCF Tables corresponding to the same control loop. Hint Words in the HCF Table whose Hint Word Set has been changed will be cleared.

Selecting the Hint Word Set

Hint Word Set

To display the Hint Word Set for Loss Scenario dialog, click on [Hint Word Set].

Refer to Hint Word Set for details on the Hint Word Set.

Hint Word Set for HCF dialog

Editing the Loss Scenario Table

Adding an Loss Scenario

Right-click on a blank column of the Loss Scenario Table or ID/HCF cell and click on [Add HCF] on the context menu.

HCF ID is automatically numbered.

Adding an HC

Editing the HCF

Double-click on the cell of the HCF to edit it. Multi-line input is enabled in the HCF columns.

Delete HCF

Right-click on the ID/HCF cell and click on [Delete HCF] on the context menu.

Delete HCF

Editing the Hint Word

Double-click on the cell of the Hint Word to select a Hint Word from among the candidates.

Selecting the Hint Word

Editing the Scenario

Double-click on the cell of the Scenario to display the HCF dialog.

Adding the Scenario

Click on [Add] in the HCA dialog to add Scenario.

Adding a Scenario

Editing the Scenario

Double-click on the cell of the Scenario to edit it. Multi-line input is enabled in the Scenario columns.

Deleting a Scenario

Select a scenario in the HCF dialog, and click on the [Delete] button.

Changing the Order of Scenarios

Select a scenario in the HCF dialog, and change the order using the up arrow or down arrow button.

Changing the order of Scenarios

Changing the Order of HCF

The order of the HCF in the Loss Scenario Table can be changed by dragging and dropping the row in the table.

Changing the order of HCF

Outputting the Loss Scenario Table to an excel file

To output the Loss Scenario Table to an excel file, click on the [Output to the Excel File] button at top right in the Loss Scenario Table.

Excel Output