Confined Space Safety: Why Portable Gas Detectors Are Essential



Working in confined spaces such as manholes, pipelines, and utility tunnels is one of the most dangerous tasks in industrial environments. The risks are invisible—oxygen deficiency or the sudden presence of toxic gases can occur without warning, leaving workers with little chance to escape. Ensuring confined space safety requires preparation, monitoring, and the use of reliable gas detection equipment.

The Situation in Korea: A Critical Warning

According to official statistics, Korea has recorded 298 confined space accidents over the past decade, resulting in 126 fatalities. In manhole work, the fatality rate exceeds 50%. These numbers highlight one clear fact: entering a confined space without a portable gas detector is a life-threatening decision.

Why Gas Detectors Are Mandatory for Confined Space Work

Confined spaces often lack natural ventilation, making it impossible to judge air quality by sight or smell. For this reason, the use of a gas detector should be a mandatory part of every confined space safety procedure.

Gas detectors help workers:

Check oxygen concentration to prevent asphyxiation

Detect toxic gases such as carbon monoxide (CO) or hydrogen sulfide (H₂S)

Monitor conditions in real time and trigger alarms when thresholds are exceeded

By providing early warnings, portable gas detectors significantly reduce the risk of confined space fatalities.

SENKO’s Solution: SP-MGTP Pump-Type Gas Detector

SENKO has been at the forefront of industrial safety equipment, developing innovative gas detection solutions for both portable and fixed applications. Our SP-MGTP pump-type gas detector is specifically designed for confined space entry.

With the SP-MGTP, workers can:

Safely sample air from inside manholes or pipelines before entry

Rely on real-time monitoring and audible, visual, and vibrating alarms

Work with a durable, compact design built for harsh environments

Ensure maximum safety in industries such as oil & gas, utilities, and construction

This makes the SP-MGTP one of the most effective tools for enhancing manhole safety and preventing confined space accidents.

Worker Safety Is a Responsibility

Confined space safety is not optional—it is an obligation. At SENKO, we believe that portable gas detectors like the SP-MGTP should be adopted as a mandatory global standard to protect workers from invisible hazards.