46 C.F.R. § 53.05-5 Discharge capacities andvalve markings.
Title 46 - Shipping
(a) The discharge capacities and valve markings must be as indicated in HG–402 of the ASME Code. The discharge capacities must be certified by the National Board of Boiler and Pressure Vessel Inspectors.
Title 46: Shipping
PART 53—HEATING BOILERS
Subpart 53.05—Pressure Relieving Devices (Article 4)
§ 53.05-5 Discharge capacities andvalve markings.

