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Create a Layer of Protection Analysis

This topic describes how to create a LOPA via the LOPA Overview page. You can also create a LOPA from a Consequence in Hazards Analysis, which is then automatically linked to the Consequence.

Steps

1. Access the LOPA Overview page.

2. On the LOPA Overview page, select the Under Review tab.

   A list of LOPAs appears.

   

3. In the upper-left corner of the Under Review section, select .

   A blank datasheet for LOPA appears, displaying the Definition section.

   

4. As needed, enter values in the available fields.

5. In the upper-right corner of the Definition section, select .

   The LOPA is created.

Results

• If you selected a value in the Risk Category and Risk Severity fields, then a Risk Assessment record is created and linked with the LOPA. The Risk Assessment record stores details about the unmitigated risk, which will be used for qualitative risk analysis of an Instrumented Function.

What's Next?

• Link the LOPA to a Consequence in Hazards Analysis

  -or-

• Assess the SIL value of an Instrumented Function using the LOPA

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