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LOPA Checklist

This LOPA checklist ensures that a LOPA study is compliant with company procedures and considers all relevant scenarios, barriers, and risk mitigation measures. It requires independent verification that identified event scenarios lead to the consequences, barriers are properly defined and independent, and any actions over $25k are justified. It also ensures exclusion of unlikely events and confirmation that operator observation is not used as a risk barrier.

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SumitAggarwal
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473 views2 pages

LOPA Checklist

This LOPA checklist ensures that a LOPA study is compliant with company procedures and considers all relevant scenarios, barriers, and risk mitigation measures. It requires independent verification that identified event scenarios lead to the consequences, barriers are properly defined and independent, and any actions over $25k are justified. It also ensures exclusion of unlikely events and confirmation that operator observation is not used as a risk barrier.

Uploaded by

SumitAggarwal
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
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LOPA Checklist

Check Facilitator Independent


check (Y/N) check (Y/N)

It is compliant with the Company LOPA procedure and data usage.

The scenarios are well defined and all IEs chosen lead to the
consequence, not different (e.g. small LoC vs large LoC)

IEs and IPLs from HAZOP have been considered for suitability to the
LOPA process

All IPLs are Independent of IEs and other IPLs. (e.g. BPCS function to
appear only once in a threat line)

Response & action to an alarm is independent of the IE and other


IPLs (including the equipment in the operator

There are no CMs or EEs with a value < 0.1

Mitigation IPLs have not been credited


All IEs and Barriers have tag names.

There are no IEs that are without IPLs (eg corrosion, pipe leak,
vehicle impact etc, earthquake) - these are to be excluded.

Actions & recommendations > $25k have been internally discussed


(with a peer) and verified as good practice for the sector.

Where barriers are suspected to be not effective. This is clearly


documented in the facilitators comments with clear justification

Operator observation does not appear as an IPL

IEs < 0.001/ year are excluded.

External impact IEs are excluded – earthquakes, impact, corrosion

Comments:
Date:

By:

Position and
Qualifications

Independence: Independent person to that which carried out the hazard, risk assessment

Signed:

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