MHI assessment and registration
Find out how to determine if your workplace is a Major Hazard Installation (MHI) and how to register to be one.
At a glance
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How to determine
To determine if your workplace is an MHI, you can:
- Use the MHI assessment form.
- Refer to the Guide to determine quantities of dangerous substances.
Where necessary, refer to the reference list of common dangerous substances hazard classification for additional information on the classification of the dangerous substances.
How to register
If your workplace is assessed to be an MHI, you need to apply for or renew your Certificate of MHI registration.
For new MHIs
For existing MHIs
For new MHIs
You need to submit your safety case to MHD at least 6 months before starting operations:
- Download and complete the MHI assessment form.
- Apply for Factory Notification or Registration to get your Certificate of MHI Registration.
For existing MHIs
You need to renew your Certificate of MHI Registration at least 6 months before its expiry:
- Download and complete the MHI assessment form.
- Renew your Factory Registration to renew your Certificate of MHI Registration.