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Petroleum Engineer's Guide to Oil Field Chemicals and Fluids by Johannes Fink

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Chapter 15. Odorization
The hazards of odorless combustible gases were probably first realized by miners. The idea of the odorization of combustible gases results from Julius Quaglio in 1880, who was engaged in researching various aspects of water gas (Quaglio, 1880). The gas produced at that time already contained impurities that created the typical odor of gas, but later it was obtained in such a purity that dangers emerged in handling it. Some aspects concerning the history of this issue are given in the literature (Usher, 1999). The primary objective of gas odorization is safety. It allows natural gas in air to be detected before it reaches combustible levels and hence acts as a warning. Naturally, odorization is a part of risk management ...

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