Which gas lines need odorization? The Federal Pipeline Safety Regulations (§192.625) demand that combustible gases in some pipelines be odorized or contain a natural odorant. Those pipelines are distribution lines and some transmission lines.
Natural Gas Odorization Requirements
Distribution lines are local natural gas utility systems that include gas mains and service lines. They also include single lines serving a consumer which is operating at less than 20% SMYS (specified minimum yield strength) from a transmission line. Additionally, systems transporting LPG through a trailer park would be considered a distribution line. All distribution lines need to be odorized or contain natural odorant. Continue reading
From water gas to natural gas, the addition of an odorant to gas, or gas odorization has always been driven by the desire to keep people safe.
Town Gas Naturally Reeks
In Europe, during the early 1800s and the initial stages of the gas industry, town gas was manufactured for lighting and heating. This gas was produced from the carbonization of coal and contained mostly hydrogen and carbon monoxide and was obviously poisonous. The gas also contained sulfur compounds and innately had a gassy odor so that if there ever was a leak it was perceived through the sense of smell. Continue reading
As a natural gas odorizer manufacturer, we are often asked, “What are the natural gas odorization regulations?” Plain and simple, in the U.S., any odorless gas within a distribution or transmission line (exceptions noted in the rules*) must contain odorant at the level of 20% or 1/5 the lower explosive limit so that a person with a normal sense of smell can detect it.
These natural gas odorization regulations are mandated by the Public Safety Regulations of the Department of Transportation in section 192.625. I’ve published them here for you to see. Continue reading