Why Fixed Gas Detectors Are Essential: The 24-Hour Threat of Flammable Gas
Flammable gases continue to leak through pipe cracks, valve failures, and flange defects even when workers have gone home. While portable detectors only function when personnel are on-site, fixed gas detectors provide 365-day, 24-hour surveillance—triggering immediate alarms and remote notifications even during unmanned night and weekend conditions.
💡 Key Point
Under Korea's Occupational Safety and Health Act Enforcement Rules, workplaces with flammable materials must install gas leak detection and alarm systems on equipment and piping. The FIX800 meets these legal requirements as a fixed 5-gas detector.
Health Impact Table by Flammable Gas Concentration
| Concentration (LEL%) | Status | Health/Environmental Effects | FIX800 Response |
|---|---|---|---|
| 0–10% | Caution | Low direct risk; leak ongoing | 1st alarm triggered; notification sent |
| 10–25% | Alarm | Fire risk with ignition source | Warning lights and siren activated |
| 25–100% | Danger | Explosion imminent; serious injury | 2nd alarm; interlock shutdown |
| ≥100% | Extreme | Autoignition; catastrophic explosion | Emergency cutoff + fire system link |
※ CH₄ LEL = 5%; LPG (propane) LEL = 2.1% (Source: KOSHA Safety Standards, 2023)
Real Incident: Nighttime Unmanned Flammable Gas Explosion
Case — 2020 Iksan Chemical Plant Explosion
In 2020, an LPG pipe at a chemical plant in Iksan, North Jeolla Province, corroded and leaked overnight, triggering an explosion that partially collapsed the building and forced the evacuation of nearby residents. The facility had no fixed gas detector installed, making early detection impossible during the unmanned night shift. (Source: Korea National Fire Agency Accident Statistics, 2021)
WANDI FIX800 — Fixed 5-Gas Simultaneous Detector
FIX800's 5-Gas Simultaneous Monitoring
A single FIX800 unit monitors up to EX (LEL), O₂, CO, H₂S, and CO₂ simultaneously. Since flammable gas leak sites often carry compounding hazards, 5-gas monitoring is the integrated solution for preventing explosion, asphyxiation, and poisoning accidents together.
Accident Prevention Scenario with the FIX800
- 124/7 Automated Surveillance: FIX800 continuously monitors flammable gas levels even when workers are off-site
- 210% LEL First Alarm: Warning lights and sirens activate immediately; supervisors receive smartphone notifications
- 3FIX-DS Display Board: Real-time concentration values shown on exterior LED board for rapid situational awareness
- 4Automatic Shutoff Interlock: At high concentrations, FIX800 triggers an automatic gas shutoff valve to stop further leakage
FIX800 Specifications — Flammable Gas Monitoring
| Item | Specification |
|---|---|
| Gases Measured | EX (LEL), O₂, CO, H₂S, CO₂ — up to 5 simultaneously |
| EX Range | 0–100% LEL |
| Installation Type | Wall-mounted fixed (continuous power) |
| Alarm Output | LED warning light, built-in siren, relay output (external device interlock) |
| Display Board | Compatible with FIX-DS gas concentration display |
| Power Supply | AC 220V or DC 24V |
| Operating Temperature | -20°C to +50°C |