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Hazard Studies & Risk Assessment

Quantitative and qualitative studies — HAZOP, SIL, LOPA, QRA, FERA, consequence modelling — to drive informed risk decisions.

Strategic context

Why hazard studies & risk assessment matters

Hazard Studies & Risk Assessment is the engine that converts complex process hazards into defensible, decision-grade risk evidence. From IEC 61882 HAZOP at FEED through QRA, FERA, SIL allocation, LOPA, ALARP demonstration, and post-incident revalidation, our studies underpin every downstream investment, regulatory submission, and operating decision. The work is anchored by certified facilitators, tool-validated software (PHA-Pro, PHAST, exSILentia, BowTieXP, FLACS), and an action-traceability discipline that survives multi-year close-out cycles and statutory revalidation.

Hazard Studies & Risk Assessment
Engagement model

How we deliver

A phased, evidence-led delivery model — from discovery through close-out — built around your facility, regulatory context, and lifecycle stage.

Scope & Risk-Matrix Calibration
Define study boundaries, applicable codes, P&ID issue revision, and site-specific tolerable-frequency matrix; form multidisciplinary team with operations, engineering, and HSE.
HAZID / HAZOP Execution
Facilitator-led workshops per IEC 61882 / ISO 17776 — node-by-node guide-word review with rotating-discipline scrutiny.
Quantification — LOPA / SIL / QRA / FERA
Run downstream studies as required — LOPA IPL credit, SIL allocation, QRA IRPA/F-N, FERA thermal/overpressure, OBRA building risk.
Action Ranking & Defensible Trail
Risk-rank actions, assign ownership and target close-out, document evidence chain through PHA-Pro / BowTieXP / exSILentia audit trail.
Revalidation & MOC Integration
Embed 5-year revalidation cycle with MOC trigger criteria; provide regulator and underwriter examination dossier on demand.
Outcomes & value

What this service delivers

  • Risk-ranked action register with defensible regulator and underwriter trail
  • SIL-allocated SIF inventory hand-off to functional safety engineering
  • QRA evidence supporting permit, insurance, and project finance
  • Bow-Tie barrier register that drives ongoing operational discipline
  • Statutory 5-year revalidation framework integrated with site MOC
Why Arborion

Our differentiators

  • Certified facilitators across every study type — HAZOP, SIL, LOPA, FERA, QRA, OBRA
  • Tool-validated workflows — PHA-Pro, PHAST, exSILentia, BowTieXP, FLACS
  • Integrated study sequencing — HAZOP → LOPA → SIL → FERA in one engagement
  • COMAH / SEVESO / OSHA PSM / MSIHC defensibility built in
Get in touch

Talk to us about hazard studies & risk assessment.

Connect with our team for a consultation scoped to your facility, regulatory context, and lifecycle stage.