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OPTICAL


o ffer dual purpose functionality. Optical gas imaging has been used to comply with regulations while saving money and improving operator safety. One example isWyoming-based Jonah Energy, which beg an using optical gas imagi ng technology in 2005 to find fugitive emissions at its production facilities3 The company inspects 150 facilities everymonth, and inspects the 1,700 wells within a one-year period.


.


Jonah uses a FLIR GF320 infrared camera formethane and VOC detection,


providing visual confirmat ion of leaks as small as 0.8 grams/hour. Jonah Energy found that advantage of t he FLIR GF3


to scan large areas and visualize gas plumes in real-time. This helps


inspectors pinpoint the source of fugitive emissions and begin t he repair process immediately,making O GI inspections more efficient th anMethod 21 surveys. In fact, during a fie ld study conducted for the City of FortWorth, TX, surveyors determi ned that scanning with infrared cameras was at least nine times faster than performingMethod 21 scans on the same si te equipment.


The spe ed of OGI scansmakes it easier


The FLIR GF320 optical gas imaging camera


20 is its ability themain


for oil and gas producers to survey equipmentmore often. The EPA notes thatmore freque nt inspections and repairs can reduce fugitivemeth ane and VOC emissions significantly. For example,


quarterly surveys can cut


emissions by 80 percent, while semi-annual monitorin g


surveys and repairs


can reduce emissions by 60 percent. Sin ce 2010, Jonah has reduced fugitive emissions by 75 percent. It also reduced repair ti me from705 hours to 106, cut labour costs from$58,369 to $7,500, and dr opped its gas losses from$348,000 to $20,500. Emissions in tons went from351 to 31.


3 Optical Gas Imaging Saves Money and


Resources for Jonah Energy,


http://www.flirmedia.co m/MMC/THG/Brochures /OGI_014/OGI_014_U S.pdf, retrieved 6/11/18.


Jonah Energy says that its monthly Leak Detection and Repair (LDA R) programme using OGI technology h as been both effective and consistent ly profitable. Their cumulative gas savings excee ded $5 million in the past six years, whichmore than covered the overall programme costs.


Inspectair, an international supplier of specialist remote visual inspection technology and solutions, relies on the


OPTICAL GAS


AS IMAG NG AGING


FEATURE bothmaintenance inspections and


hydrocarbon leak detection in hydrocarbon product ion plants or for the inspect ion of anymaterial that uses hydrocar bon as a fuel. They f ind the GF320 camera can scan a broader ar eamuchmore rapid ly and monitor areas that are difficult to reach with contactmeasurement tools


“We have been using certain contact measurement tools like laser detectors or leak sniffers,” said Inspectair’s Cailean Forrester. “But the problemis that you have to go right up to the obj


not always safe or ev en possible. In other words this approach is limited and not v ery precise.With an optical gas imaging came ra like t he GF320 however, you can kee p a safe distance and still detect gas leaks with great precision.”


,


Ron Lucier, an instructor at the Infrared Training Center in Nashua, NH, said: “Methane and other hydrocarbons are not only flammable, but in high concentratio ns they can cause


asphyxiation.With TVA gas ‘sniffers’ you know the gas is there, but you don’t know howmuch. OGI users c an immediately see the size of the gas plume – something that’s impossible to do wi th a gas sniffer.”


FLIR FLIR GF320 optical gas imaging cam era for wk www.flir.co.uk ww.


bject, which i s


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s PROCESS & CONTROL | FEBRUARY 2020 21


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