49 C.F.R. § 229.103 Safe working pressure; factor of safety.
Title 49 - Transportation
The safe working pressure for each steam generator shall be fixed by the chief mechanical officer of the carrier. The minimum factor of safety shall be four. The fixed safe working pressure shall be indicated on FRA Form F 6180–49A.
Title 49: Transportation
PART 229—RAILROAD LOCOMOTIVE SAFETY STANDARDS
Subpart C—Safety Requirements
Steam Generators
§ 229.103 Safe working pressure; factor of safety.
