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Title: Odorant Leak Management
Author: Pierre Braud Olivier Griperay Jean-Benoit Cazaux
Source: 2016 American School of Gas Measurement Technology
Year Published: 2016
Abstract: All around the world, propane, butane and natural gas must be odoriz ed. The odorization ensures a safe transport , distribution and use of this valuable energy to residential buildings. Regulations vary from one country or state to another. T he natural gas can be odorized at different points of the gas grid: i n some countries (France, Spain, South Korea...), odorization takes place at the e ntry points of the countrys gas grid , either at the gas trans mission pip es or at Liquefied Natural Gas (LNG) terminal s just after vaporization . In other countries (USA, Canada, Mexico, Germany, Italy, Belgium, China...) , natural gas is often odorized at city gate level , where gas is depressurized to allow distribution to residential points . Odorants also may vary from one country to another , and within the same country as well . The International Organization for Safety (ISO) is listing in the ISO 13734 (1) components commonly used: o dorants are mainly composed of Sulfides (TetraHydroThiophene, MethylEthylSulfide, DiMethylSulfide) and Light Mercaptans ( mainly TertiaryButylMercaptan , IsoPropylMercaptan ).

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