WISERISE Clean Agent & Inert Gas Fire Protection

Fixed Inert Gas & Clean Agent Systems (IG-541 / IG-55 / IG-100 · HFC-227ea · FK-5-1-12)

Class-compliant, residue-free suppression for high-value and mission-critical spaces. Due to higher life-cycle cost, these systems are recommended for special applications such as ECR, control rooms, switchboard & server spaces, where downtime and contamination must be minimized.

IMO FSS Code Ch.5 Fixed gas system engineering & control

MSC.1/Circ.1267 Guidelines for non-CO₂ gas systems in machinery/pump rooms

ISO 14520 / NFPA 2001 Clean-agent design references

Applications

Residue-free total-flooding for sensitive electronics and control spaces; equivalent-gas options for machinery areas.

Control & ECR Rooms

Bridge comms, ECR, switchboard rooms, server/rack spaces—no clean-up, minimal downtime (FK-5-1-12 / HFC-227ea / IG).

Machinery & Pump Rooms

Where CO₂ is undesirable, approved equivalent gas systems may be applied with specific design and verification.

UPS / Nav & Comms Spaces

Protection of electronics and cable voids where water or foam residue is unacceptable.

Archives / Sensitive Stores

Low-residue, low-corrosivity agents reduce collateral damage in special rooms.

Hazard Enclosures / Cabinets

Local total-flooding for MCCs, switchgears, CNC/drive cabinets as per design standards.

Spaces with Critical Uptime

Where shutdown and clean-up costs are high—agents selected by toxicity limits and environmental rules.

Project Delivery Flow

From hazard study to class handover—aligned with IMO FSS Chapter 5 and MSC.1/Circ.1267 for equivalent systems.

Hazard & Scope Definition

Identify protected spaces and target agent (FK-5-1-12 / HFC-227ea / IG-541/55/100) based on toxicity, venting, and downtime impact.

Survey & Leakage/Vent Study

Enclosure integrity, hold time and pressure relief; machinery spaces assessed for equivalent-gas requirements.

Engineering & Class Submittal

Agent quantity calculations, nozzle layout, safety controls and interlocks; drawings and manuals for class approval.

Procurement & Fabrication

Cylinders, valves, manifolds, selector valves, nozzles, panels, release gear; FAT as required by class.

Installation & Commissioning

Pressure/leak tests, functional and alarm interlocks; agent discharge and door-fan tests where applicable.

Handover & Lifecycle

Class dossiers, crew training, refill/recert plans; periodic testing per ISO/NFPA practices.

Compliance & Classification

Engineered to IMO FSS Code Chapter 5; equivalent-gas approvals per MSC.1/Circ.1267; design references ISO 14520 / NFPA 2001. Environmental rules for HFCs apply in some flags.

FSS Code Chapter 5 — Fixed Gas Systems

Engineering & control, discharge, safety interlocks

MSC.1/Circ.1267 — Equivalent Gas

Approval guidance for machinery & cargo pump rooms

ISO 14520 / NFPA 2001

Clean-agent properties, design density & hold-time methods

Flag & Class (ABS • LR • DNV • CCS • BV)

Submission packages; FAT/SAT witnessing as required

HFC Environmental Controls

EU F-gas rules and other regional restrictions on HFCs

Recent FSS Updates

2024+ consolidations keep Ch.5 specifications current

Inventory Snapshot — Clean Agent & Inert Gas

Shanghai & Singapore stock for rapid repairs and retrofits—agent, hardware and commissioning kits.

Agent Cylinders & Valves

FK-5-1-12 / HFC-227ea cylinders, valve kits, pressure gauges, burst discs; recharge & recert support.

Inert Gas Cylinders (IG-541/55/100)

High-pressure cylinder banks, pressure-reducing valves, manifolds & racks.

Selector Valves & Manifolds

Main/sectional manifolds, selector & NRV sets, discharge hoses & fittings.

Nozzles & Piping

Total-flooding nozzles, orifice plates, stainless piping components, hangers.

Control & Release Hardware

Release panels, pilot lines, actuation heads, local indicators & alarms.

Test Tools & Integrity Kits

Room integrity/door-fan test gear, pressure relief devices, commissioning consumables.

Customer Guidance & Applications

How to start with WISERISE, what to send for quotation, and which spaces justify clean-agent/inert-gas protection.

Information Required for Quotation

Vessel/type & IMO; protected spaces & volumes; known leakage paths/ventilation details
Class/flag requirements; whether “equivalent to CO₂” is intended for machinery
Preferred agent (FK-5-1-12 / HFC-227ea / IG-541/55/100) & justification
Required interlocks: alarms, shutdowns, ventilation, door controls
Delivery schedule & port; refill/recert expectations

Engineering references applied: IMO FSS Ch.5, MSC.1/Circ.1267, ISO 14520 / NFPA 2001.

Where It Makes Sense (Cost-Justified)

Electronics & Control: ECR, switchboard rooms, bridge comms, server/UPS rooms
Special Machinery: When CO₂ is undesirable—apply equivalent-gas guidelines
High Downtime Cost: Spaces where residue/cleanup time from water/foam is unacceptable
Environmental/Flag Limits: Where HFC use is restricted—prefer IG or FK-5-1-12

Note: Clean agent & inert gas systems have higher CAPEX/OPEX—use selectively for high-value, residue-sensitive, mission-critical spaces.