6 Gas Detection
Close range inspection with the FLIR GF320 optical gas imaging camera revealed that this tank was leaking all along the rim. leaks the ability to record video is crucial."
During an inspection the operator often makes many video recordings. Keeping your video archive tidy can be a challenge due to the sheer quantity of recorded videos. To make this task a little bit easier the FLIR GF320 optical gas imaging camera automatically embeds GPS location data in the video recordings. With the date, time and GPS data embedded in the video's metadata it is much easier to keep your video archive tidy.
Even tanks that have been emptied can still be leaking gas, such as this tank, which contained gasoline. This thermal image taken with the FLIR GF320 optical gas imaging camera shows that residual gasoline vapor is escaping into the atmosphere.
All FLIR GF-Series optical gas imaging cameras are also ergonomically designed with a rotating handle, direct access buttons and a tiltable viewfinder and LCD screen. With a weight of 2.4 kg the FLIR GF320 optical gas imaging camera is also relatively light and compact in comparison to other gas detection tools. Designed from the end-user’s perspective, the FLIR GF320 optical gas imaging camera offers advanced ergonomics to improve worker safety and individual performance, not to mention reducing back and arm strain.
After using the FLIR GF320 optical gas imaging camera for a few months Van Doorn was pleasantly surprised by the accuracy with which he could detect leaks using the camera. “The camera is much more sensitive than we had anticipated, especially when operating in the high sensitivity mode”, says Van Doorn. “We were surprised to find that even very small leaks are clearly visible with the camera, even when you are inspecting from a distance.”
High Sensitivity Mode
This thermal image taken with the FLIR GF320 optical gas imaging camera shows a leak in a tank containing piperylene, a flammable hydrocarbon which is produced as a byproduct of ethylene production from crude oil. The thermal image shows a leak as well as the liquid level inside the container.
The High Sensitivity Mode (HSM) is an additional special feature included in all GF-Series optical gas imaging cameras. It is an image subtraction video processing technique that effectively enhances the thermal sensitivity of the camera. The HSM feature subtracts a percentage of individual pixel signals from frames in the video stream from the subsequent frames, thus enhancing the differences between frames, which make leaks stand out more clearly in the resulting images.
Preventing future emissions
This thermal image taken with the FLIR GF320 optical gas imaging camera shows a leak in a tank containing Methyl tert-butyl ether (MTBE) which is a flammable organic compound that is added to gasoline as oxygenate to raise the octane number.
“We’ve been working with the camera for some time now and it has allowed us to detect leaks and ascertain regulation transgressions that would have remained undetected without the camera. Storage tanks that we always supposed to be in good working order and well maintained turned out to be leaking quite badly. This allowed us to take action in order to prevent further emissions. So I would definitively say that it has already proved to be worthwhile."
This thermal image taken with the FLIR GF320 optical gas imaging camera shows a leak in a tank containing a mixture of nafta and benzene.
IET March / April 2012
www.envirotech-online.com
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