Flammable and toxic gas detection devices are often seen in 2 different types: The mobile type is the Handheld Gas detectors and the fixed type is the Fixed Gas detectors. The choice of which type to use depends on many different factors such as: Whether the area is frequently entered or not, the field conditions, the danger there is always or occasionally there is, the frequency of inspections, and the last important thing is the economic condition.
Handheld gas detectors are classified as personal protective equipment (PPE) types, designed to keep employees safe from gas hazards and allow mobile checks in locations before they enter.
Small devices are essential in many places where there is a possible risk of gases, because they are the only means of monitoring the operator’s breathing area continuously, while both fixed and moving.
Although the fixed gas detector also serves the purpose of protecting workers, it cannot follow the person, so the worker can move beyond the protection range of the gas detector.
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| Use a handheld gas detector in a large space |
Many scenes use both fixed gas detectors and handheld gas detection machines, but only a handheld gas detector is used. This choice comes from the following causes:
- This area may not be penetrated by regular staff, making the addition of fixed gas detection devices wasteful
- This area may be small or difficult to reach, the positioning of the fixed gas detection head is not practical
- Special applications lead to gas detection equipment that is not fixed by itself.
Changes in laws and compliance with regulations, combined with new insurance conditions, have led to more and more handheld gas detectors being used on site. In addition to the requirements into law (where compliance is required), many construction site can also choose to implement specific rules; for example, try bump test a portable gas detection machine before it is used.
by TESIN VIETNAM
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