About Integration Between Hazards Analysis and LOPA

Integration between Hazards Analysis and LOPA helps in analyzing the risk in a hazardous scenario, and developing appropriate Safeguards to mitigate the risk.

You can create or link a LOPA with a Consequence in Hazards Analysis (i.e., a HAZOP or a What If Analysis). When you create or link a LOPA with a Consequence, the following information are mapped from the Cause to the LOPA:

Cause Type: The value in the CCPS Cause Type field from the Hazards Cause is mapped to the Initiating Event Type field in the LOPA.
Cause Frequency: The value in the Cause Frequency (per year) field from the Hazards Cause is mapped to the Frequency of Initiating Event field in the LOPA.

Hence, though you create or link a LOPA from a Consequence, the LOPA is performed on a Cause-Consequence pair. For each Cause-Consequence pair, you can perform a LOPA.

Safeguard sharing between Hazards Analysis and LOPA

When you can create or link a LOPA with a Consequence in Hazards Analysis, the Safeguards that are associated with the LOPA are automatically linked to the Consequence for which you performed the LOPA. Similarly, the Safeguards that are associated with the Consequence are automatically linked to the LOPA.

You can modify a Safeguard only if the Hazards Analysis and the LOPA with which the Safeguard is associated are in the Planning state.

When you unlink a LOPA from the Consequence in Hazards Analysis, GE Digital APM system creates copies of the Safeguards associated with the LOPA, and then links them to the Consequence. The copied Safeguards appear in the Hazards Worksheet of the Hazards Analysis.

Illustration

The following image shows the data mapping between Hazards Analysis and LOPA.

Integration between Hazards Analysis and LOPA