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Title: Odorization
Author: Maurice E. CALAWAY,C. D. SMITH,G. E. Woolfall
Source: 1972 Southwestern Gas Measurement Short Course (Now called ISHM)
Year Published: 1972
Abstract: Probably only a small percentage of natural gas consumers are aware that the product is odorless without the addition of a gas odorant. Actually what is detected by smell is two to four and one-half cubic feet of odorant vapor mixed into one million cubic feet of natural gas. All of the legislation concerning the odorization of natural gas is on the state level at present. The wording varies widely from state to state, but generally the requirement is for a detectable odor at 1% gas in air. The fact that all gas distributors use from three to ten times as much gas odorant as that required by law, indicates that safety and leak detection is foremost in the minds of gas industry personnel. In fact, since Natural Gas Odorizing has been in business the average rate of odorization has increased over the years and it is still increasing.

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