Fire Detection
The earlier a fire can be detected, the more time there is for occupants to escape and the better are the chances of extinguishing or at least containing the fire. A wide range of devices exists for detecting either heat or smoke.
Smoke Detection
Smoke is usually the first detectable sign of any carbonaceous fire, therefore, smoke detectors are most frequently used unless there are problems with steam or dust, etc., which may trigger false alarms.
Ionising detectors operate when smoke enters the detector and it absorbs ions, reducing the flow of electrical current. These devices are very sensitive to smoke and may be triggered by cigarette smoke and dust, etc.
Light scatter detectors operate when smoke scatters a beam of light.
Obscuration detectors operate when smoke enters the detector preventing light from reaching a photoelectric cell.
Safety Courses in Chennai | Nebosh Courses in Chennai | OHSAS 18001 | Apply Now !
The earlier a fire can be detected, the more time there is for occupants to escape and the better are the chances of extinguishing or at least containing the fire. A wide range of devices exists for detecting either heat or smoke.
Smoke Detection
Smoke is usually the first detectable sign of any carbonaceous fire, therefore, smoke detectors are most frequently used unless there are problems with steam or dust, etc., which may trigger false alarms.
Ionising detectors operate when smoke enters the detector and it absorbs ions, reducing the flow of electrical current. These devices are very sensitive to smoke and may be triggered by cigarette smoke and dust, etc.
Light scatter detectors operate when smoke scatters a beam of light.
Obscuration detectors operate when smoke enters the detector preventing light from reaching a photoelectric cell.
Safety Courses in Chennai | Nebosh Courses in Chennai | OHSAS 18001 | Apply Now !
No comments:
Post a Comment