Syncing HAZOPs with connected LOPAs

When a LOPA has been created and linked to a Consequence in a HAZOP, then the following will be synced:

• The Consequence and highest Risk (Severity*Likelihood) among the associated Consequence categories.
• The associated Cause(s) (HAZOP) with Initiating Event(s) (LOPA).
• The associated Existing safeguards (HAZOP) with Barriers (LOPA).
• The ALARP notes.

Synced Barriers and Existing safeguards

The Barriers and Existing safeguards will then be synced in the following way:

When HAZOP and LOPA in Draft

The Barriers and Existing safeguards will be synced while the HAZOP and LOPA are both in Draft. Thus, when changes are made in the HAZOP’s Existing safeguards, they will automatically be applied to the LOPA’s Barriers and vice versa. Also, when a new Existing safeguard is added to the Consequence in the HAZOP, a Barrier will automatically be added in the LOPA as well, and vice versa.

When the HAZOP is Approved, but the LOPA is in Draft

When the LOPA is in Draft (or put back in Draft) and Barriers are changed, then the HAZOP will show a warning and out of sync Existing safeguards will be indicated with. You can then put the HAZOP back into Draft and sync the elements individually with, or all at once with

When the LOPA is Approved, but the HAZOP is in Draft

When the HAZOP is in Draft (or put back in Draft), the LOPA will show a waning and out of sync Barriers will be indicated with. You can then put the LOPA back in Draft and Sync with the HAZOP.

The HAZOP is the Master

This means you can normally ONLY delete an Exiting Safeguard from the HAZOP and the Barrier will then be deleted in the LOPA. Only when the HAZOP and LOPA is not Synced can a Barrier be deleted from the LOPA, i.e., when the LOPA is put back in Draft while the HAZOP remains Approved. 

Synced Initiating Events and Causes

Similar to how Barriers and Existing Safeguards are synced, the Initiating Events and Causes will also be synced.

Synced ALARP notes

Similar to how Barriers and Existing Safeguards are synced, the ALARP notes will also be synced.

Synced Consequences

The Consequence and its highest Risk (Severity*Likelihood) among the associated Consequence categories will be synced to the Consequence of failure on demand in the LOPA. Highest Risk in synced.However the associated Severities for the Consequence categories are initially copied from the HAZOP, but not synced. Tolerability Criteria (TC) values shown in LOPA (Assessment Summary) result from these Severity values.