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Industrial Controls & Process Equipment

Fire suppression for automation, control, and process equipment

Automation and control rooms, PLC and DCS spaces, instrumentation areas, and machine or process equipment enclosures require project-specific evaluation of the fire hazard, equipment, enclosure conditions, occupancy, process shutdown sequence, ventilation, piping constraints, and approval requirements.

Application principle

The equipment type is not the design basis

An industrial control room or process-equipment designation does not determine the final suppression system. Selection depends on the specific fire hazard, combustible materials, equipment arrangement, process conditions, enclosure characteristics, occupancy, operating sequence, storage-space limitations, piping routes, applicable standards, system configuration, approval status, and Authority Having Jurisdiction requirements.

Choosing the right suppression approach
Protected environments

Environments that may require special-hazard protection

Automation and control rooms
PLC and DCS spaces
Remote I/O and marshalling rooms
Instrumentation rooms
Operator control rooms
Drive and motor-control rooms
Machine enclosures
Process equipment enclosures
Enclosed equipment housings
Industrial communication rooms

These examples are illustrative. The final protection approach depends on the specific hazard, equipment, enclosure, occupancy, operating requirements, system configuration, and project approvals.

Project considerations

Information that supports a suppression-system review

Fire hazard and combustible materials
Process fluids, lubricants, or hydraulic fluids present
Energized equipment and operating voltage
Equipment arrangement and clearances
Enclosure integrity and leakage
Room or enclosure volume and geometry
Occupancy and egress
Pre-discharge alarms and time delay
Process and equipment shutdown sequence
HVAC, ventilation, and exhaust shutdown
Doors, dampers, penetrations, and openings
Hot surfaces and reignition sources
Pressure-relief requirements
Available cylinder-storage space
Piping routes and hydraulic limitations
Post-discharge ventilation and recovery
Inspection and maintenance access
Applicable standards, approvals, and AHJ requirements
This website provides general application information and does not perform project-specific hazard analysis or system design. Final design requires current controlled system documentation, approved design methods, qualified system design, and project acceptance by the Authority Having Jurisdiction.
Process equipment

Process and equipment shutdowns require coordinated review

Fire protection for process and machine equipment must be coordinated with the process, equipment interlocks, fuel and energy isolation, shutdown requirements, owner procedures, and applicable fire-protection requirements.

The suppression system does not replace process safety systems, equipment guarding, electrical protection, fault detection, equipment maintenance, or other required safeguards.

Enclosure & ventilation

Enclosure and ventilation conditions matter

Total-flooding protection depends on the ability of the protected room or enclosure to establish and maintain the required agent concentration for the applicable design period. Openings, conveyor or product penetrations, exhaust and ventilation systems, doors, access panels, pressure effects, and leakage paths must be evaluated as part of the project design.

HVAC and exhaust shutdown, damper operation, door and access-panel position, pressure-relief venting, equipment shutdowns, and post-discharge ventilation must be coordinated with the system operating sequence and applicable requirements.

Occupancy & sequence

Occupancy and operating sequence require project review

Pre-discharge alarm
Time delay
Egress
Manual release
Abort provisions where permitted
Process and equipment shutdowns
HVAC and exhaust shutdown
Door and damper coordination
Emergency procedures
Warning signs
Post-discharge ventilation
Re-entry requirements
Occupied-space suitability depends on the design concentration, exposure duration, operating sequence, applicable personnel-safety requirements, system approval, and AHJ acceptance.
Operating continuity

Protection must support the facility’s operating objectives

Suppression-system design should be coordinated with the owner’s production, shutdown, restart, recovery, ventilation, inspection, maintenance, and post-discharge response requirements.

FK-5-1-12 leaves no agent residue after discharge, reducing cleanup associated with the suppression agent.

Available system

Where FK-5-1-12 may be considered

FK-5-1-12 is an engineered total-flooding clean-agent system that may be considered for industrial control and process-equipment spaces where electrically non-conductive protection, no suppression-agent residue, available storage space, enclosure conditions, the fuels present, design criteria, operating requirements, and configuration-specific approval requirements support its use.

FK-5-1-12 suppresses fire primarily through chemical interference with the combustion process, combined with heat absorption.

Review FK-5-1-12

Final suitability requires project-specific review using the current controlled system documentation.

Approval & documentation

Approval status varies by configuration

Approval & certification

Approval and certification status varies by system configuration, including container size, working pressure, component, arrangement, and jurisdiction. Approval of one configuration does not automatically extend to another.

Approval & certification status Document library
Discuss your industrial controls or process equipment project
Share the hazard, equipment, process fluids, room or enclosure dimensions, enclosure details, occupancy, ventilation and exhaust conditions, shutdown requirements, storage-space limitations, piping information, operating objectives, and approval requirements with the DueNorth team.