LOPA Main Screen

The LOPA Main screen shows an overview grid, with a list of LOPAs.

Listing LOPAS (the Overview Grid)

To see the list of registered LOPAs:

• Go to the IMS SIS Main Menu.
• Click LOPA to go to the LOPA main screen.

Click on the LOPA Main menu, to list all LOPAs.

• Use the scoping bar, the filter, or the search functionality to list the desired LOPAs;

Find LOPAs using the scoping bar / filter / search functionality.

• Each record shows several fields, summarizing the LOPA (see Table ). To see more, click on the Settings icon in the toolbar and add additional fields.

Click on the settings icon to modify the grid. 

Default LOPA data in the LOPA record:

Field / Column	Description
Expand	Expand or collapse a LOPA record using respectively the  and  button. This will give you the SIL values.
Select	Check to select a LOPA.
Active	The Active flag shows for each LOPA whether it is active or inactive:  Active LOPA Inactive LOPA (All objects in SIS are Active by default at first)
Name	Name (ID) of the LOPA, click on the LOPA ID to open the LOPA details.
Description	Short Description for the selected LOPA.
HAZOP	If related to a HAZOP, the name ID is shown here.
Unit	Unit to which the LOPA is assigned to.
Plant	Plant to which the LOPA is assigned to.
Consequence	The Consequence description for the LOPA
HAZOP Scenario	The Scenario description.
Approved Date	The date when the LOPA was Approved.
Approved By	By whom the LOPA was Approved.
Approved Status	The Approval Status, e.g., Draft or “FINAL APPROVAL”.
Labels	Custom labels (to be added by users) for each record.
Number of “Not Valid Barriers”	Barriers can be set to be “Not Valid” (NV). The total number of Not Valid Barriers for the LOPA is shown here.

For more information see Navigating IMS Main Menu Items and IMS Main Screen (Grid List).

LOPA Menu Toolbar

There are several shortcuts or available features that the LOPA toolbar can be used for, e.g., to import LOPAs or create a Report. For more information see IMS Main Screen - Toolbar.

Take note:

• Normally a LOPA is active after the first Final Approval. 
• To delete a LOPA it must  be in Draft (and Inactive). Thus, Final Approved LOPAs cannot be deleted.
• You can use the calculate button to Calculate the SIL gap for selected LOPAs.

Copying and Pasting LOPAs

LOPAs can be copied and pasted via the LOPA Main Screen toolbar's Copy and Paste buttons. The data will be handled as follows:

• If the copied LOPA has a link to a HAZOP, the link will be severed, and any linked information will be removed from the common details of the new LOPA.

• If the copied LOPA includes a SIF, a duplicate of the SIF will be created as a standard barrier in the new LOPA. Additionally, the PFD values (L and H) will be reset to 1.00E+00, and the calculate button will turn red, indicating a recalculation is necessary.

• Initiating Events, Barriers, and Condition Modifiers in the copied LOPA will retain the same text, validity, frequencies, and PFDs as in the original LOPA.

• All notes, attachments, revisions, recommendations, SCEs, and actions will be removed.

The Copy and Paste functions in the LOPA Main Screen toolbar. 

Filtering LOPAs

From the LOPA overview page, several filters can be used to drill down the search results for the shown list of LOPAs. Filters include items such as:

• Date Range,
• Active,
• Approved Status,
• Has “Not Valid” Barriers,
• LOPA with SIF,
• Etc.

To filter a list:

• Click on the filter button.
• Check the filters that you want to use.
• Click Show ….
  Click the filter button, select the desired filters, and click Show….

  For more information see IMS Main Screen - Filters.