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Process Safety Engineering

Loss Prevention Engineering

We deliver loss expectancy driven prevention engineering to the underwriter grade expected by FM Global, Marsh and Lloyd's

Technical overview

Loss Prevention
Engineering

Loss prevention engineering is the discipline of designing high hazard facilities to minimise probable maximum loss, maximum foreseeable loss and business interruption exposure. This is the language of underwriters and CFO risk committees rather than only HSE managers. The field operates at the intersection of process safety through CCPS RBPS and OSHA PSM, fire and explosion engineering through fire and explosion risk assessment outputs, FM Global Data Sheets and NFPA standards, and insurance industry frameworks including Highly Protected Risk qualification, the Marsh probable maximum loss methodology and the Lloyd's London property markets. Mature practice treats every Tier 1 process safety event as a financial event with quantifiable impact, on the order of 100 million to over 1 billion US dollars for a refinery or petrochemical Tier 1 fire, drives protection capital against marginal loss reduction logic, and produces insurer dialogue evidence that can move premium tiers, typically a reduction of 30 to 50 percent between an IRMI HPR qualified site and an unprotected one. The 2020s have added climate physical risk exposure from extreme weather, flood and wildfire, cyber physical risk and supply chain business interruption to the traditional scope of fire, explosion and mechanical breakdown.

Loss Prevention Engineering Overview
Engineering process

Loss Prevention Engineering workflow

Loss Prevention Scope & Inventory Review

Establish loss prevention scope per CCPS RBPS and OSHA PSM Engineering element, build loss inventory by unit (asset value, business interruption exposure, environmental sensitivity), align with insurer (FM Global, AXA XL, Lloyd's) data requirements.

Inherent Safety & Layer Hierarchy Review

Apply CCPS Inherently Safer Design hierarchy, minimise, substitute, moderate, simplify, review engineering controls (BPCS, alarms, relief, SIS, passive), identify high leverage prevention opportunities at FEED stage where cost multiplier is 10, 100× lower.

Engineered Loss Prevention Design

Specify engineered loss prevention measures, secondary containment per SPCC, blast walls per API 752, fire suppression per NFPA, gas/fire detection per ISA TR84.00.07, integrate with FERA output and facility siting study findings.

MOC & Engineering Change Discipline

Design MOC (Management of Change) programme per OSHA PSM (1) covering process, equipment, organisational, and procedural changes, specify PSSR (Pre Startup Safety Review) gate criteria, integrate with PHA revalidation triggers.

Insurer & Underwriter Engagement

Develop FM Global HPR tier qualification dossier with site walk down photos, equipment registers, and protection documentation, engage AXA / Lloyd's underwriters with engineered loss prevention narrative, capture premium tier savings opportunities.

Loss Prevention Programme Governance

Issue loss prevention programme charter with KPIs (loss incident rate, MOC closure cycle, near miss reporting), specify annual audit programme and management review cadence, integrate with API RP 754 PSE indicators.

Loss Prevention Engineering Scope
Scope of work

Every deliverable from basis to handover

Complete Loss Prevention Engineering scope covering every calculation, drawing, specification, and construction support activity.

We calculate probable maximum loss, maximum foreseeable loss and estimated maximum loss
We quantify business interruption exposure across direct, contingent and supply chain
We apply the hierarchy of protection driven by fire and explosion risk assessment, putting prevention ahead of control and control ahead of mitigation
We align the design with FM Global Data Sheets for HPR qualification
We scope passive protection covering passive fire protection, spacing and blast resistance per the fire and explosion risk assessment thermal load and overpressure
We integrate active suppression with detection per NFPA 13, 15, 16 and 750
We strengthen procedural barriers through management of change, permit to work and contractor management
We overlay climate physical risk from extreme weather, flood, wildfire and sea level rise
We treat cyber physical risk per IEC 62443 with its insurance implications
We run the underwriter dialogue with quantitative evidence covering probable maximum loss reduction and HPR tier qualification
Engineering outcomes

Outcomes of Loss Prevention Engineering

Loss Event Prevention and Inventory Control
  • We limit the credible fire, explosion and toxic release loss envelope
  • We drive capital to the protection that genuinely has the highest impact
  • We integrate passive and active layers into coherent defence in depth
  • We anchor operational discipline through the strength of procedural barriers
API 14C and OSHA PSM Engineering Defence
  • We deliver design aligned to FM Global Data Sheets for HPR
  • We produce work defensible under NFPA and API RP 752 754
  • We withstand OSHA NEP and EPA RMP inspection
  • We align with the COMAH and Seveso ALARP demonstration
Management of Change and Engineering Change Discipline
  • We reduce business interruption exposure across direct, contingent and supply chain
  • We drive inspection, testing and maintenance discipline per NFPA 25 through risk prioritisation
  • We strengthen the dialogue across Operations, Engineering, Insurance and Finance
  • We anchor realistic emergency response drill scenarios
Capital, Business Interruption and Insurance Loss Reduction
  • We help you capture the HPR insurance tier premium reduction, typically 30 to 50 percent against an unprotected site
  • We reduce underwriter loadings through quantified loss expectancy evidence
  • We optimise capital sequencing against marginal loss reduction
  • We help you pre empt post loss recovery and litigation cost
Standards & references

Codes & standards we work to

FM Global Data Sheets (7 to 29 refinery, 7 to 32 chemical, 7 to 95 storage)NFPA 30, 13, 15 and 25API RP 752, 753 and 754CCPS LOPA GuidelinesMarsh, Aon and Lloyd's PML methodologyIRMI Highly Protected Risk criteriaISO 13702 (fire protection)CCPS RBPSOISD STD 106, 116 and 118 (Petroleum)PESO certification (India)CEA Regulations 2010 (India Electrical Safety)Indian Petroleum Rules 2002API 2000 (Tank Venting)API 2003 (Static Electricity)
When to engage

Triggers that signal the need

FM Global or insurer assessment or HPR applicationPost loss review or near loss investigationMajor capital programme planningRisk based portfolio review of the facilityInsurance renewal cycleProperty and casualty integration for a merger or acquisitionBaselining of climate physical risk exposureCyber physical risk integration
Industries served

Where Loss Prevention Engineering applies

Oil & Gas, Upstream

Wellheads, separators, gas compression, FPSO topsides, produced water systems.

UpstreamOffshoreFPSO
Refineries & Petrochemicals

Distillation columns, reactors, heat exchangers, storage spheres, LPG handling.

RefiningPetrochemical
LNG & Gas Processing

Cryogenic exchangers, liquefaction trains, BOG compressors, storage and sendout.

LNGCryogenic
Specialty Chemicals

Reactive systems, batch reactors, solvent handling, runaway reaction scenarios.

ReactiveBatch
Power Generation

Boilers, HRSGs, steam headers, hydrogen systems, ammonia SCR units.

PowerHydrogen
Pharma & Food

Sterile vessels, CIP/SIP, pressure fermenters, solvent recovery, spray dryers.

PharmaFood & Bev
What we deliver

Tangible deliverables

  • Loss prevention engineering strategy document
  • Quantification of probable maximum loss, maximum foreseeable loss and estimated maximum loss per major accident hazard
  • Business interruption exposure analysis
  • Protection hierarchy mapping
  • Capital prioritisation register ranked by marginal loss reduction
  • FM Global Data Sheet alignment dossier
  • Climate physical risk overlay
  • Cyber physical risk treatment
  • Insurer and underwriter dialogue pack
Get Started

Ready to start your project?

Speak with our team to scope an engagement tailored to your facility, regulatory context, and lifecycle stage.