Many industries use chimneys to burn unwanted flammable side or waste products from normal operation. This system, under normal safe burning circumstances, is often used in the oil and chemical industries and in gas distribution facilities. Before burning these substances can be hazardous either to people, as well as animals or plants, therefore, it is very important that gases escaping from these substances into the air, are not burnt haphazardly. In a carefully controlled burning process these compounds are neutralized and the impact on the environment is minimal. However, regulations require that this burning must be really safe. Therefore, it must be monitored. Mainly the ignition and flame setting phase must be monitored.
Over several decades monitoring systems with equipment functioning on the basis of thermocouples up to pyrometers have been gradually developed. Recently, technologies based on the UV detection principle and ionization spectrometry have come to the fore. These systems are much more reliable, but on the other hand, they can be very costly and relatively difficult to operate and install.
It is important to understand the basic requirements for this type of monitoring system i.e.: variable composition or burnt gases, low volume flows of gases, high concentration of smoke, risk of immediate flaring up and explosion. A suitable solution for this type of application is Workswell SAFETIS thermal imagining cameras.
The important thing about SAFETIS thermal imaging cameras is their ability to monitor burning process continuously 24/7 and to warn by alarms a risk of any kind related to a change of temperature. The great advantages of SAFETIS cameras are being able to connect up to 16 thermal cameras at the same time and the software which can monitor wide areas.
In addition, these cameras have several robust cover options, making them highly variable assistants in any situation: The SAFETIS Exproof system is especially for explosive environments, whereas SAFETIS Outdoor safety works in any outdoor environment, even under strong winds or smoke.
Workswell SAFETIS cameras safety distinguish between area of interest (burning in chimneys) and surrounding environment (typically sky or clouds). They can be located to monitor not only the flame of the reservoir but also the flame of the igniter. The great advantage of the thermal monitoring principle is that the camera can monitor situations where a traditional digital camera does not register any change visible to the human eye. Compared with the UV band, the IR band in which the SAFETIS camera operates is advantageous because the camera cannot be blinded by smoke or the system breaking down because of other climatic changes. Compared with pyrometers, thermal imaging cameras offer much higher resolution and thermal sensitivity so much greater spatial details can be detected (pyrometers provide average temperature from large areas, the result must be always quite “deviated”).
Workswell SAFETIS cameras provide non-stop monitoring of the whole “flare” system. Our experience shows that flare monitoring includes the ability to measure low, as well as high temperatures. The advantage of SAFETIS thermal imaging camera is the option of a measuring range up to 1,500°C. The camera is is available with the following resolution: 336 x 256 px and 640 x 512 px and LWIR a microbolometer is used with the spectral range 7.5 – 13.5 μm.
Another way to efficiently monitor this application is to use drones (UAV) together with thermal imaging cameras (for example Worskwell WIRIS Pro) that can measure temperatures up to 1,500 °C. The advantage of this is the very quick relocation of the thermal imaging camera and shots from many angles and inaccessible places.
Workswell SAFETIS is a thermal camera (thermocamera) specially constructed for the fast detection of the risk of flare-up before the occurrence of fire…