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Legislation, Audits & Inspections15 min read•Published 12 August 2026

Major Hazard Installation (MHI) Regulations 2022: Compliance & Risk

Authoritative compliance guide for chemical plants, fuel storage depots, and gas facilities under the Major Hazard Installation (MHI) Regulations (2022), detailing Quantitative Risk Assessments (QRA) and municipal emergency planning.

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Diba Process Safety PracticeLead Major Hazard Installation Specialists
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Petrochemical storage terminal and industrial chemical processing facility under Major Hazard Installation compliance auditQuantitative risk assessment and off-site emergency planning under MHI Regulations 2022.

1. Statutory Overview of the MHI Regulations 2022

The updated Major Hazard Installation Regulations place significant accountability on industrial operators to prevent catastrophic industrial fires, vapor cloud explosions, and toxic releases.

Frequently Asked Questions

What is the threshold quantity for LPG to be classified as an MHI?

Under MHI Regulations 2022, bulk LPG storage exceeding 10 tonnes requires a full QRA by an Approved Inspection Authority.

DP
Written by Diba Process Safety PracticeVerified by Orlinda Pieterson
Lead Major Hazard Installation Specialists • Pr.Eng (Chemical), AIA

Diba BES is a 100% Black Women-Owned, Level 1 B-BBEE provider delivering occupational health & safety consulting, accredited workplace training, and commercial workplace services across South Africa since 2003.

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