Process Safety Engineering

Fire & Explosion Protection Engineering

Engineered passive + active fire protection — FERA-driven, NFPA/API-compliant, FM-Global-aligned

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Technical overview

Fire & Explosion
Protection Engineering

Fire and explosion protection engineering converts FERA quantitative thermal radiation and overpressure outputs into deployed passive (PFP cementitious / intumescent / boards / blankets), active (water deluge, foam, gas suppression), and structural (blast-resistant module / blast walls / strengthened steel) protection scope. The discipline must balance API RP 2218 jet-fire thermal-load credit, UL 1709 vs ASTM E119 fire-curve appropriateness (hydrocarbon pool fire = UL 1709 1093°C/5min vs cellulosic = E119 538°C/5min), ISO 22899 jet-fire test fire-protection ratings, and FM Global Data Sheets (7-29 / 7-95 for refineries, 7-32 for chemical plants) for insurer-aligned design. Modern PFP work also navigates NFPA 286 fire-test methods, cryogenic spill protection per ISO 20088 (added in 2020 for LNG / LH₂), and the new generation of intumescent epoxies (Sherwin-Williams Firetex, AkzoNobel Chartek) replacing legacy cementitious / vermiculite-cement products. Active suppression design integrates NFPA 13 (sprinklers), NFPA 15 (water spray), NFPA 16 (foam-water), NFPA 17A (wet chemical), NFPA 2001 (clean agent), and increasingly water-mist per NFPA 750. The hardest decisions remain PFP scope-of-coverage envelope (which structural members and vessels), thermal-load duration (30-min / 60-min / 90-min / 120-min depending on emergency depressurisation), and FM Global Highly Protected Risk (HPR) qualification for premium savings.

Fire & Explosion Protection Engineering — Overview
Engineering process

Fire & Explosion Protection Engineering workflow

FERA Output Review & PFP Scope Brief

Review FERA thermal radiation contours, jet-fire exposure, and overpressure outputs to establish PFP scope envelope; identify structural members, vessel skirts, pipe supports, and valves requiring protection per API RP 2218; define jet-fire vs pool-fire scenario coverage.

Fire Test Curve & PFP Material Selection

Select fire-test curve per scenario — UL 1709 hydrocarbon pool fire (1093°C/5min) for refining/petrochem, ASTM E119 cellulosic for general structures, ISO 22899 jet-fire for high-velocity exposure; specify PFP material (cementitious, intumescent epoxy, board, blanket) with depressurisation-time-coordinated rating.

Active Suppression System Design

Design water-deluge per NFPA 15 (6.1–20.4 lpm/m² density); foam-water per NFPA 16/11 for tank-farm; clean-agent per NFPA 2001 (Novec 1230, FM-200) for control rooms; water-mist per NFPA 750 where water-supply is limited; coordinate with detection cause-and-effect activation.

Cryogenic Spill & Special Hazard Protection

Apply ISO 20088 cryogenic spill protection for LNG / LH₂ / NH₃ facilities; specify cold-spill-rated PFP and structural protection; design spill containment, drainage, and vapour-mitigation barriers per facility hazard profile.

ITM Programme & FM Global HPR Qualification

Develop NFPA 25 inspection, testing, maintenance procedures with frequency schedule; produce FM Global Data Sheet 7-29 / 7-32 / 7-95 alignment dossier for HPR (Highly Protected Risk) tier qualification; specify vetted-equipment list for premium savings eligibility.

Specification Package & Commissioning Support

Issue FEP design basis with FERA-output linkage; procurement specs for PFP applicator and suppression vendor; FAT/SAT acceptance criteria; commissioning hold-point register; integration with emergency response procedures and drill scenarios.

Fire & Explosion Protection Engineering — Scope
Scope of work

Every deliverable — from basis to handover

Complete Fire & Explosion Protection Engineering scope — every calculation, drawing, specification, and construction support activity.

FERA-output-driven PFP scope envelope — structural members, vessel skirts, valves, supports
Fire-test curve selection — UL 1709 hydrocarbon pool fire vs ASTM E119 cellulosic vs ISO 22899 jet fire
PFP material selection — cementitious vs intumescent epoxy vs board / blanket / spray-applied
Depressurisation-time-coordinated PFP duration (typically 30 / 60 / 90 / 120-min ratings)
API RP 2218 jet-fire thermal-load credit and J1 vs J2 jet-fire endpoint analysis
Water-deluge system design per NFPA 15 with discharge density (typically 6.1–20.4 lpm/m²)
Foam-water system design per NFPA 16/11 for tank-farm protection
Clean-agent suppression per NFPA 2001 for control rooms and electrical rooms (Novec 1230, FM-200)
Cryogenic spill protection per ISO 20088 for LNG / LH₂ / NH₃ facilities
FM Global HPR qualification with vetted equipment list for premium tier eligibility
Engineering outcomes

Outcomes of Fire & Explosion Protection Engineering

VCE & Fire Protection Effectiveness
  • Limits fire and explosion escalation envelope per FERA-quantified thermal load
  • Closes the silent under-protection of vessel skirts and pipe supports
  • Drives PFP duration matched to emergency depressurisation reality
  • Addresses cryogenic spill protection now mandatory for LNG / LH₂ / NH₃
API 2218 / NFPA / FM Global HPR Defence
  • NFPA suite + API RP 752 / 2218 audit-defensible design
  • FM Global Data Sheet HPR qualification
  • UL 1709 / ASTM E119 / ISO 22899 test-curve-appropriate selection
  • Withstands AHJ, insurer, and underwriter examination
PFP & Suppression Coverage Optimisation
  • Reduces business interruption from credible fire events
  • Drives realistic ITM (NFPA 25) scope and frequency
  • Sharpens coordination with emergency response procedures
  • Supports realistic drill scenarios
PFP Scope & Insurance Tier Efficiency
  • Avoids the 20–50% PFP over-specification common in legacy installations
  • Captures FM Global HPR insurance-tier savings (typical 30–50% premium reduction)
  • Right-sizes deluge and foam capacity to FERA-quantified scenarios
  • Defers structural upgrade where PFP-credited depressurisation duration is shorter
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