49 C.F.R. § 230.35 Pressure testing.
Title 49 - Transportation
The temperature of the steam locomotive boiler shall be raised to at least 70 deg. F any time hydrostatic pressure is applied to the boiler.
Title 49: Transportation
PART 230—STEAM LOCOMOTIVE INSPECTION AND MAINTENANCE STANDARDS
Subpart B—Boilers and Appurtenances
Pressure Testing of Boilers
§ 230.35 Pressure testing.
