Installation] FIX800 O2 installation in the protective area of ​​a building in Busan

FIX800 O₂ Fixed Gas Detector Installation in Commercial Building Protected Zones — Busan

In response to amended South Korean fire suppression regulations effective October 18, 2024, a Busan commercial building commissioned the installation of nine FIX800 O₂ fixed oxygen gas detectors across nine independent CO₂-protected zones. The project followed the same configuration successfully deployed at a prior Yongsan building installation and was carried out to ensure worker safety in the event of accidental CO₂ discharge from the building's fire suppression system.

Installation Specifications

CO₂ Discharge Hazard in Protected Zones: Why O₂ Monitoring Is Critical

• A protected zone (방호구역) is a designated area equipped with fire detection and automatic CO₂ suppression systems; accidental discharge can release CO₂ to a minimum concentration of 34% within 60 seconds.
• Exposure to CO₂ at such concentrations without immediate evacuation can result in asphyxiation and fatal poisoning, making real-time O₂ monitoring an essential life-safety measure.
• The October 18, 2024 legislative amendment to CO₂ fire suppression equipment management requirements mandates enhanced safety measures, including gas detection, in affected facilities.
• The FIX800 O₂ detector supports flexible sensor configurations — from a single O₂ sensor up to a 5-gas confined-space package (O₂, CO, H₂S, LEL, CO₂) — enabling site-specific solutions across building and industrial environments.
• Installing a dedicated O₂ detector at each protected zone entry point provides immediate alarm feedback, allowing workers to evacuate safely before oxygen levels reach dangerous thresholds.

Frequently Asked Questions

What is a "protected zone" (방호구역) in the context of building fire suppression?

A protected zone is a compartment within a facility that is continuously monitored by fire detection equipment and is connected to an automatic CO₂ fire suppression system. In the event of a fire, CO₂ is discharged to extinguish it. Because CO₂ displaces oxygen rapidly, these zones present a serious asphyxiation risk to personnel and require dedicated gas monitoring.

Why was the FIX800 O₂ model selected for this installation?

The FIX800 is a wall-mounted fixed gas detector designed for continuous monitoring. For this application, a single O₂ sensor configuration was chosen because the primary hazard is oxygen depletion caused by CO₂ discharge. The unit's single-channel LED display provides clear, real-time readings that workers can check immediately upon entering the zone.

How many units were installed, and how were they distributed?

A total of nine FIX800 O₂ detectors were installed — one per protected zone — across nine separate protected compartments in the building. Each zone also received a single-channel display panel (1CH), giving a complete 9-unit detector and 9-unit display system.

What regulatory change triggered this installation project?

South Korea's revised regulations on CO₂ fire suppression equipment management, which took effect on October 18, 2024, introduced stricter safety requirements for facilities using CO₂-based suppression systems. Building owners are now required to implement additional protective measures — including gas detection equipment — to safeguard personnel working in or near protected zones.

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