Indiana Code Title 8. Utilities and Transportation § 8-1-22.5-1

(a) The term “gas” means natural gas, flammable gas, or gas which is toxic or corrosive.

(b) The term “transportation” means:

The term does not include the gathering of gas in those rural locations which lie outside the limits of any incorporated or unincorporated city, town, village, or any other designated residential or commercial area such as a subdivision, a business or shopping center, a community development, or any similar populated area which the commission may define as a nonrural area.

(c) The term “pipeline” means all parts of those physical facilities through which gas, hazardous liquids, or carbon dioxide fluid moves in transportation, including pipe, valves, and other appurtenances attached to pipe, compressor units, metering stations, regulator stations, delivery stations, holders, and fabricated assemblies, but excluding motor vehicles of all kinds and pipelines serving not less than ten (10) customers with petroleum gas from a common source.

(d) The term “pipeline facilities” means and includes, without limitation, new and existing pipelines, rights-of-way and any equipment, facility, or building used in:

The term excludes motor vehicles of all kinds and pipelines serving not less than ten (10) customers with petroleum gas from a common source.

(e) The term “person” means any individual, firm, joint venture, partnership, corporation, limited liability company, association, municipality, cooperative association, or joint stock association, and includes any trustee, receiver, assignee, or personal representative thereof.

(f) The term “municipality” means a city, county, or any political subdivision of the state.

(g) The term “division” means the pipeline safety division to be established under this chapter.

(h) The term “maximum allowable operating pressure” means the maximum pressure at which a pipeline or a segment of a pipeline may be operated.

(i) The term “hazardous liquid” means petroleum, petroleum products, or anhydrous ammonia.

(j) The term “carbon dioxide fluid” means a fluid consisting of more than ninety percent (90%) carbon dioxide molecules compressed to a supercritical state.