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Process Safety Engineering

Our engineers deliver the code compliant safety engineering that keeps your process protected, covering relief systems, flare studies, fire protection, hazardous area classification, safety instrumented system design and alarm rationalisation so that every layer of protection on your facility is sound and well documented.

Strategic context

Why process safety engineering matters

Process Safety Engineering converts hazard study output into engineered protection. Relief and flare systems, fire and explosion protection, firewater hydraulics, hazardous area classification, safety instrumented systems, emergency shutdown architectures, alarm rationalisation, loss prevention engineering and safety barrier management are each delivered to API, ASME, NFPA, IEC, PESO and OISD code with construction ready documentation. Our work translates FERA contours, QRA risk drivers and SIL targets into the specifications, drawings and procurement packages that an EPC can build without rework.

Process Safety Engineering
Engagement model

How we deliver

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

Design Basis and Code Selection
We review the FERA, QRA and SIL inputs, choose the applicable code suite across API, ASME, NFPA, IEC, OISD and PESO and map the regulatory requirements for your jurisdiction.
Calculation and Sizing
We engineer the relief loads, flare radiation contours, firewater hydraulic model, hazardous area classification drawings, SIS and ESD logic and passive fire protection scope envelope, all to the credible worst case.
Specification and Drawings
We prepare the P&ID mark up, equipment datasheets, system specifications and construction ready drawing packages with a constructability check.
Procurement and FAT Support
We evaluate technical bids, review vendor documents, manage deviation MOC and witness factory acceptance tests for safety critical equipment.
SAT, Commissioning and PSSR
We run the site acceptance test and the pre startup safety review per OSHA PSM clause (h) and prepare handover documentation aligned with your operations and maintenance teams.
Outcomes & value

What this service delivers

  • Code defensible relief, flare and protection design without over specification
  • FM Global HPR tier qualification that captures premium savings of 30 to 50 percent
  • A right sized SIS architecture that eliminates SIL inflation
  • A hydraulically validated firewater system with a credible demand basis
  • Construction ready drawings, specifications and procurement packages
Why Arborion

Our differentiators

  • Fluency across API, ASME, NFPA, IEC, OISD and PESO in one engagement
  • FERA, QRA and SIL input translated directly into engineered protection
  • FM Global HPR qualification experience across multiple sectors
  • Integration with your detailed engineering, EPC and commissioning teams

Standards we work to

API 520 Pt I (10th Ed., 2020) and Pt II (7th Ed., 2020)API 521 / ISO 23251 (8th Ed., 2024)API 526 / 527ASME Sec VIII Div 1 UG 125 to UG 140ASME B31.3 / B16.5DIERS Project ManualEnergy Institute HEM 3OSHA 29 CFR 1910.119(d)EPA 40 CFR Pt 68OISD STD 106 / 116 / 118 (Petroleum)PESO certification (India)CEA Regulations 2010 (India Electrical Safety)Indian Petroleum Rules 2002API 520 / 521 / 2000

Industries we serve

  • Refineries and Petrochemicals
  • Oil and Gas across Upstream and Offshore
  • LNG, Cryogenic and Hydrogen
  • Specialty Chemicals and Pharma
  • Power, Fertilizer and Hydrogen
  • Bulk Storage Terminals and Pipelines

Frequently asked questions

What is process safety engineering?

It is the discipline that converts hazard study output into engineered protection. We deliver relief and flare systems, fire and explosion protection, firewater hydraulics, hazardous area classification, safety instrumented systems, emergency shutdown architectures, alarm rationalisation and safety barrier management, translating FERA contours, QRA risk drivers and SIL targets into the specifications, drawings and procurement packages an EPC can build without rework.

Which codes and standards do you design to?

We design relief and flare systems to API 520, 521, 537 and 2000, fire protection across the NFPA suite and API RP 2218 and FM Global Data Sheets, hazardous area classification to IEC 60079, API RP 500 and IS 5572, and safety instrumented systems to IEC 61511 Edition 2 with IEC 62443 for cyber. For India we also work to OISD STD 106, 116, 117 and 118 and the PESO regime. Alarm rationalisation follows EEMUA 191 and ISA 18.2.

When is this engineering needed?

It is needed once your hazard studies have identified the protection your facility relies on, typically after HAZOP, LOPA, SIL allocation and FERA are complete and before procurement and construction. It is also triggered by a debottlenecking project, a relief system revalidation, an alarm flood problem or a finding that your hazardous area classification or firewater demand basis is out of date.

What deliverables do you provide?

You receive code defensible relief, flare and protection design without over specification, a right sized safety instrumented system architecture that eliminates SIL inflation, a hydraulically validated firewater system with a credible demand basis, hazardous area classification drawings and construction ready specifications and procurement packages. Where FM Global HPR qualification applies we target the premium savings that come with it.

Which industries do you serve?

We serve refineries and petrochemicals, oil and gas across upstream and offshore, LNG, cryogenic and hydrogen, specialty chemicals and pharma, power, fertilizer and hydrogen, and bulk storage terminals and pipelines. We work in one engagement across API, ASME, NFPA, IEC, OISD and PESO and integrate with your detailed engineering, EPC and commissioning teams.

Get in touch

Talk to us about process safety engineering.

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