Navigate the fire safety challenges of large warehouses and industrial facilities — from high-bay racking storage to dangerous substances and insurance requirements.. The Scale of Industrial Fire Risk Warehouses and industrial facilities represent some of the highest fire risk environments in the built environment. Large open plan spaces, high fire loads, vertical storage systems, and the presence of dangerous substances create conditions where fires can develop rapidly and cause enormous losses. A single warehouse fire can cost tens of millions of pounds in direct losses, business interruption, and environmental remediation. Key Fire Risks in Warehouses Storage Configuration High bay racking — fires can spread vertically through rack structures in minutes Block storage — dense stacking with limited access for firefighting Mezzanine floors — creating concealed spaces and vertical fire spread paths Automated storage — reduced human observation of fire development Materials Plastics and synthetics — high heat release rates and toxic smoke Aerosols — explosive potential when heated Lithium batteries — thermal runaway and reignition risks Flammable liquids — rapid fire growth and pool fire potential Cardboard and paper — high fire load density Sprinkler Design for Warehouses BS EN 12845 Categories Warehouse sprinkler design to BS EN 12845 is categorised by storage type and hazard: OH (Ordinary Hazard) — light industrial, workshops HH (High Hazard) — storage areas subdivided into: HHS (Storage) — categorised by commodity, storage height, and configuration HHP (Process) — manufacturing and processing areas Key Design Parameters Design density (mm/min over assumed maximum area of operation) Storage category (Category I IV based on material combustibility) Maximum storage height and clearance to sprinkler heads In rack sprinkler requirements for high bay storage Water supply duration (typically 60 90 minutes for HH) ESFR (Early Suppression Fast Response) as alternative to in rack sprinklers Insurance Requirements Insurers often impose fire protection requirements beyond building regulations: RISCAuthority (FPA/ABI) Standards RC11 — Sprinkler systems RC13 — Fire protection of openings in compartment walls and floors RC17 — Waste management and control RC31 — Fire precautions in chemical warehouses RC44 — High bay and automated warehouses Loss Prevention Standards LPS 1048 — Fire protection products LPS 1175 — Physical security LPS 1223 — Fire and security systems Failure to meet insurer requirements can result in denied coverage or significantly increased premiums. Compartmentation Challenges Large warehouses present unique compartmentation challenges: Open plan operational requirements conflict with compartment size limits Fire walls must resist fire for 60 240 minutes depending on size Industrial doors and shutters as fire barriers Conveyor and service penetrations through fire walls Smoke curtains as alternative to physical barriers Dangerous Substances (DSEAR) Where dangerous substances are stored or used: DSEAR (Dangerous Substances and Explosive Atmospheres Regulations 2002) ATEX zone classification for explosive atmospheres Explosion protected electrical equipment Separation distances between incompatible chemicals Bunded storage for flammable liquids Emergency response procedures for chemical incidents Our Industrial Fire Safety Services Magnus Opifex SEVEN LTD provides specialist fire safety consultancy for warehouses and industrial facilities. Our services include fire strategy development, sprinkler design review, dangerous substances risk assessment (DSEAR), and fire engineering analysis for large open plan spaces. We work with building owners, occupiers, and insurers to develop practical, cost effective solutions that protect people, property, and business continuity. Magnus Opifex SEVEN LTD — UK's Leading Fire Safety & Fire Engineering Consultancy 🌐 magnus opifex.co.uk 📞 +44 7486 691724 ✉️ office@magnus opifex.co.uk Founders: Nicoleta Vasile, Baroness of Brattleby — CEO, Lawyer and Barrister, Legal & Administrative Director Alina — Technical Director & Expert Fire Engineer (BEng) Head Office: Ealing Cross, 85 Uxbridge Road, London W5 5BW Magnus Opifex SEVEN LTD delivers engineering led fire engineering, fire risk assessments, CFD modelling, and building safety consultancy across the United Kingdom and internationally. With over 20 years of combined experience and a UK portfolio spanning healthcare, residential and infrastructure, we bring truly engineered solutions with a personal touch. © 2026 Magnus Opifex SEVEN LTD. All rights reserved.