Beyond Compliance, Towards Certainty.
In high-hazard industries, ambiguity is the greatest risk. With ONR and HSE scrutiny intensifying under the BSA 2022 framework, and a 'good enough' fire strategy is a liability.
The Unseen Liabilities That Halt Production and Trigger Enforcement
The operational and regulatory complexity of nuclear, COMAH, and defence sites means fire risk is multi-dimensional. Standard risk assessments often miss the cascading failure points that attract regulator attention and lead to catastrophic business interruption.
Regulatory Non-Compliance
Failing to produce a 'suitable and sufficient' safety case for the ONR or HSE can lead to enforcement notices, project delays, and even prosecution under COMAH 2015. A full review is mandatory every 5 years.
Spiralling Insurance Premiums
Insurers like FM Global and Zurich are demanding engineering-led proof of resilience. Inadequate fire risk assessments can lead to 20-30% higher premiums, significant exclusions, or complete refusal to underwrite.
Failed Safety Cases & Audits
The ONR's 2025 enforcement notice at Hinkley Point C for fire compartmentation failings demonstrates zero tolerance for gaps between design and installation. Your safety case must be defensible under intense scrutiny.
Ageing Asset Integrity
Decommissioning Sellafield's legacy ponds or extending the life of AGR stations introduces complex, evolving fire hazards. Standard FRAs are insufficient for managing risk in these deteriorating, high-consequence environments.
Navigating the UK's High-Hazard Regulatory Maze
We provide clarity in the UK’s complex regulatory landscape. Our engineers work to the stated requirements and expectations of the ONR, HSE Competent Authority, Environment Agency, and the MOD's Defence Fire Risk Management Organisation (DFRMO).
Control of Major Accident Hazards Regulations
Requires upper-tier sites to produce a detailed safety report demonstrating 'all measures necessary' have been taken to prevent and mitigate major accidents, including fire and explosion.
ONR Safety Assessment Principles & Technical Assessment Guides
Mandates a robust 'safety case' where fire protection is integral to nuclear safety functions (LC 14). Requires evidence of resilience against internal hazards like fire (EHA.7).
Dangerous Substances & Explosive Atmospheres Regulations
Mandates risk assessment for materials like hydrogen, requiring hazardous area classification, ignition control, and selection of ATEX-certified equipment to prevent catastrophic explosions.
Defence Fire Safety and Fire Risk Management Policy
The mandatory MOD standard for the Defence Estate. It requires specific FRA protocols, training, and PEEP integration, with heightened controls for secure facilities and explosive stores.
The Magnus Opifex Certainty Principle™
Our proprietary four-step methodology moves beyond prescriptive code-ticking. We build a first-principles, evidence-based argument for safety that is technically robust, commercially viable, and defensible in front of any regulator.
Deep Regulatory Baseline
We don’t start with a generic template. We immerse ourselves in your specific operational context and regulatory environment—be it ONR SAPs, COMAH, or JSP 426—to identify the exact 'exam questions' your safety case must answer.
Quantitative Hazard Modelling
We simulate credible fire, smoke and explosion scenarios using recognised computational fire and explosion modelling methods. This allows us to quantify the threat to safety-critical systems, structures and personnel instead of relying on assumption. The modelling method, assumptions and limitations are agreed and stated in writing for each commission.
Performance-Based Engineering
Armed with data, we engineer the optimal solution. This could mean validating a more efficient PFP strategy, optimising suppression system design, or demonstrating that existing measures are sufficient, saving millions in unnecessary retrofits.
Safety Case Defence
We help author the fire safety chapters of your safety case, ensuring the argument is clear, logical, and directly addresses the regulator's concerns. We then provide technical support during regulatory review meetings to defend the strategy.
Secure Your Licence to Operate.
Capabilities for High-Consequence Environments
Our services are engineered for sectors where failure is not an option. Our scope covers the full lifecycle of high-hazard assets, from design and construction to lifetime extension and decommissioning.
Fire Hazard Analysis Input (Licensee-Owned Safety Case)
Fire hazard analysis input to a licensee-owned safety case, and probabilistic fire risk Assessment (PFRA), and demonstrating compliance with SAPs and TAGs for new build and legacy sites.
COMAH & DSEAR Assessment
Authoring and defending upper-tier COMAH safety reports, conducting DSEAR assessments, explosion modelling, and hazardous area classification for petrochemical and chemical processing plants.
Decommissioning Fire Safety
Developing dynamic fire strategies for high-hazard decommissioning projects, managing evolving risks in legacy facilities like those at Sellafield and Dounreay.
Energy Transition Hazards
Performance-based design for emerging risks including grid-scale Battery Energy Storage (BESS) fire spread and hydrogen production/storage explosion hazards (jet fire, VCE).
Defence Estate Compliance
Delivering fire engineering for secure MOD facilities, with sector-specific technical knowledge in JSP 426, JSP 482 (explosives), and navigating DIO procurement frameworks as SC/DV cleared partners.
Quantitative Hazard Analysis
Deterministic and probabilistic fire modelling methods applied to produce the quantitative, traceable evidence a safety case argument requires, with the analysis basis, assumptions and limitations stated in the report.
What makes industrial & warehousing fire safety different
Fire load in a warehouse is set by what is stored and how high it is stacked, so the same building changes risk class the moment the occupier changes commodity.
Compartment sizes routinely exceed prescriptive limits, which means the design has to be justified by analysis and by an explicit protection strategy.
Property and business-interruption exposure is often larger than the life-safety exposure, so insurer expectations sit alongside — and sometimes above — the statutory minimum.
Who we usually work with
- ·Developers and occupiers of logistics and manufacturing space
- ·Operations and HSE directors
- ·Insurance and risk managers
- ·Design and build contractors
Which requirements typically apply, and how
Regulatory Reform (Fire Safety) Order 2005, as amended by the Fire Safety Act 2021
Applies to industrial workplaces in England and Wales; the employer is normally the Responsible Person.
Building Regulations and Approved Document B
Applies to building work; large single-compartment buildings are normally justified through a performance-based route.
DSEAR (Dangerous Substances and Explosive Atmospheres Regulations 2002)
Applies where dangerous substances or explosive atmospheres are present. Applicability is confirmed against the actual process, not assumed from the building type.
Applicability is confirmed for the specific building. This is technical fire-safety consultancy and not legal advice; legal interpretation is a matter for your own advisers.
What you can instruct — and what is excluded
Scoped deliverables
- Fire strategy for warehousing, manufacturing and logistics buildings
- Large-compartment justification and protection strategy
- Storage-arrangement and commodity-change review
- Fire risk assessment for the operating facility
- Fire-safety input to insurer and risk-engineering queries
Boundaries of the work
- ·Sprinkler and suppression system design, hydraulic calculation and certification remain with the installing specialist; we define the required performance and review the proposal.
- ·Process safety, DSEAR zoning and chemical assessment are separate scopes undertaken only where separately agreed.
- ·This is technical fire-safety consultancy. Magnus Opifex Seven is not a building control authority, not the Building Safety Regulator, and not a certification body.
- ·We do not take on Responsible Person, Accountable Person, Principal Designer or Principal Contractor duties, and no approval outcome, programme or cost is guaranteed.
- ·British Standards and PAS documents are standards and guidance, not legislation; where they are referenced the statutory position is stated separately.
- ·We do not issue or sign EWS1 forms. EWS1 is a valuation-related form for lenders and is not a life-safety certificate or a fire risk assessment.
- ·Scope, fees and programme are confirmed in a written quotation once the building information is reviewed.
What we need to scope your enquiry
Information needed
- ·Building footprint, eaves height and compartment arrangement
- ·Commodity type and maximum storage height
- ·Whether racking, mezzanines or automation are present
- ·Any insurer requirement already issued
Relevant services
Useful reference
Scope your industrial building
Send the footprint, eaves height, commodity and storage arrangement. You get a written scope covering the compartment argument and the protection strategy it depends on.
Discuss an industrial buildingIndustrial & Nuclear Questions, Expert Answers
Direct answers from our fire engineering consultants — no jargon, no fluff.
How does your approach to a new nuclear build differ from an ageing one?
What's the single biggest mistake operators make in their COMAH safety reports?
How can we justify the cost of quantitative fire modelling (CFD) to our board?
We are developing a grid-scale BESS project. Can you help us get it through planning?
Our site is SC cleared. Are your engineers able to work on secure MOD projects?
Is our standard FRA under the RRO 2005 sufficient for our high-hazard site?
Secure Your Licence to Operate.
Don't let regulatory gaps or hidden risks jeopardise your project's future. Get a confidential assessment of your fire safety case from a UK fire engineer working in high-hazard environments.