FLIR Infrared Imager Helps Reduce Environmental Impact of Landfill Site

A FLIR GF320 gas camera locates CH4 & H2S emissions from landfill


Drammen, Norway — A report from FLIR Systems describes how Norwegian waste treatment company, Lindum Ressurs og Gjenvinning AS has successfully implemented a FLIR GF320 gas camera to spot methane leaks, prevent uncontrolled gas venting and keep the air clean at and around its landfill sites.

At the company’s main site at Drammen (Norway), Lindum has a biogas production plant and a huge landfill consisting of selected solid waste covered with clay layers. The methane gas produced by the landfill is extracted and used for power production and residential heating.

Methane (CH4) is an odourless, environmentally harmful gas which is created as a result of pressure formed in the landfill. However, the landfill also discharges Hydrogen Sulphide (H2S) a malodorous gas that at times has annoyed surrounding residential areas.

FLIR GF320To detect these gas leaks, Lindum acquired a FLIR Systems GF320 gas imaging camera, an infrared camera that traces and visualizes about twenty VOC gases including methane. The landfill, with a surface of approx 10 hectares, is inspected twice a week at dawn for about one hour.

The FLIR GF320 instantly shows gas leaks, visualized as black or white plumes. Landfill workers then cover the leaks with clay and an ironed mass to neutralize the sulphide odours.

The FLIR GF320 gas imaging camera is also used for inspection of the biogas production piping on a weekly basis.

Using the FLIR camera as both a maintenance and safety tool, Lindum has made estimated savings of more than Euro 12,000 per year and has been able to reduce the foul odour nuisance considerably.

For further information on the FLIR GF320 please contact FLIR Systems on telephone +33 (0)1 6037 0100 or email

leaks-optical-gas-imagingOptical imaging using FLIR GF-Series thermal cameras offers a number of benefits compared to traditional ???sniffers????? (TVAs) because they scan a broader area much more rapidly and in areas that are difficult to reach with contact measurement tools.

Infrared thermal imagers show a leak as a plume of vapor in the visual display created from the infrared image.

Once a leak is found from a longer, safer distance, one can use a TVA to quantify the concentration.

FLIR GF-Series: Gases Detected and Minimum Detected Leak Rate (MDLR)

Independent laboratory (third party) testing confirms that the FLIR GF300/320 infrared cameras can see the following gases at the Minimum Detected Leak Rates (MDLRs) of:

  • 1-Pentene – 5.6 g/hr
  • Benzene – 3.5 g/hr
  • Butane – 0.4 g/hr
  • Ethane – 0.6 g/hr
  • Ethanol – 0.7 g/hr
  • Ethylbenzene – 1.5 g/hr
  • Ethylene – 4.4 g/hr
  • Heptane – 1.8 g/hr
  • Hexane – 1.7 g/hr
  • Isoprene – 8.1 g/hr
  • Methyl ethyl ketone (MEK) – 3.5 g/hr
  • Methane – 0.8 g/hr
  • Methanol – 3.8 g/hr
  • Methyl isobutyl ketone (MIBK) – 2.1 g/hr
  • Octane – 1.2 g/hr
  • Pentane – 3.0 g/hr
  • Propane – 0.4 g/hr
  • Propylene – 2.9 g/hr
  • Toluene – 3.8 g/hr
  • Xylene – 1.9 g/hr

FLIR, pioneers in all aspects of infrared technology, designs, manufactures and supports thermal imaging systems and subsystems for industrial, scientific, governmental, commercial, and fire fighting applications. With a 40-year history of infrared innovation, over 100,000 systems in use worldwide, and development centres and sales offices in over 60 countries, FLIR is the world leader in thermal imaging technology.

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