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In addition, these emissions are unanticipated; as such, they are not detected by typical monitoring and control devices. Since the typical control equipment and facilities cannot detect them, it is imperative to use specialised equipment. Reporting fugitive gas emissions is an important activity for oil and gas industries, as hydrocarbon gases like Methane play some of the most significant role in accelerating climate change, as per the Global Methane Initiative (GMI). India is a signatory and a partner to the Global Methane Initiative since 2004.
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Optical gas imaging uses a spectrally filtered thermal camera to visualise otherwise invisible gas leaks. It works by measuring the infrared radiation passing through a volume of gas. Each gas has its own spectral absorption characteristics, and many gas compounds will absorb some infrared energy, but only within a certain narrow range of wavelengths. Within this very narrow range, targeted to a specific gas, OGI cameras can visualise where a gas plume exists, which typically looks like a smoke cloud, by blocking the energy from reaching the IR detector. At ValenceOGI, we use the Teledyne FLIR Gx320 ™ OGI camera to visualise and collect precise data for emissions.
The Teledyne FLIR Gx320 ™ OGI camera is a state of the art device to perform optical gas imaging surveys. The Gx320 is specifically tuned to visualise fugitive emissions that are impossible to see with the human eye, so no time is wasted inspecting safe, leakfree components. It is capable of visualising multiple hydrocarbon gases, including methane, ethane, propane which are some of the most abundant gases. The camera is certified intrinsically safe, with ATEX and IECEx certifications for use in hazardous locations, to meet the international standards of safety as well.
The Gx320 camera has an inbuilt system for quantification, which gives an accurate quantification of the concentration of the leaking gas. This eliminates the need for secondary sampling with a toxic vapour analyzer or similar tool. In addition, the Gx320 does not require close contact with the gas in order to measure emission rates, making it a safer solution for quantifying difficult-to-measure gas leaks.
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Great experience and impressive product. It was a very professional and technically competent job from the whole team.
From a safety point of view, these surveys are essential as early detection of leaks and emissions helps out in repair, saving operation costs as well as insurance costs and reducing collateral damages for the oil and gas industry. The quantification of leaks is an important aspect of measuring fugitive emissions, something which traditional gas meters and gas detection systems cannot do. With built-in GPS, the location of the leaks can also be easily traced for quicker action on remedial measures. Usage of these state of the art technologies and equipment will surely improve the leak detection and repair scenario across the oil and gas industry resulting in a promotion of a culture of safety for large as well as small installations, along with capture of fugitive emissions. Our techniques and reports would be compliant with the Method 21 specified by the US EPA, which is the default international standard for detection of volatile organic compound leaks. For the future proposed standards like Appendix K, we are capable of adapting to the newer norms as well.
With the help of data and images obtained from these cameras with their proprietary software we intend to provide accurate photographs and reports for scientists, fire engineers and safety engineers to ascertain leakages and avoid future risks of major accidents in the oil and gas industry.
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