46 C.F.R. § 58.16-35 Markings.
Title 46 - Shipping
(a) The outside of the cylinder enclosure housing liquefied petroleum gas cylinders, valves and regulators shall be marked as follows:
Liquefied Petroleum Gas Keep Open Fires Away. Operating Instructions (b) A durable and permanently legible instruction sign covering safe operation and maintenance of the gas-consuming appliance shall be installed adjacent to the appliance. (c) “Operating Instructions” as listed in §58.16–30 shall be framed under glass, or other equivalent, clear, transparent material, in plainly visible locations on the outside of the metal enclosure and near the most frequently used gas-consuming appliance, so they may be easily read.
Title 46: Shipping
PART 58—MAIN AND AUXILIARY MACHINERY AND RELATED SYSTEMS
Subpart 58.16—Liquefied Petroleum Gases for Cooking and Heating
§ 58.16-35 Markings.