Marking.

(a) Nameplate. Each tank built after July 1, 1985 shall have a corrosion resistant metal plate permanently affixed by brazing or welding around its perimeter, on the left side (on the right side prior to July 1, 1985) near the front. If this nameplate is attached by welding, it must be welded before the tank is postweld heat-treated. The nameplate must be plainly marked by stamping, embossing, or other means of forming letters into the metal of the plate, in characters at least 3/8-inches high. The following information, in addition to that required by the ASME Code, must be included (parenthetical abbreviations may be used):

(1) DOT Specification number MC-338 (DOT MC-338);

(2) Material specification number (Mat. Spec. No.);

(3) Maximum density of lading for which the tank is designed (Max. Dens. of Lading);

(4) Water capacity, in pounds net at 60 °F., with the tank at its coldest operating temperature, after deduction for the volume above the inlet to the pressure relief device or pressure control valve, structural members, baffles, piping, and other appurtenances inside the tank (W. Cap.); and

(5) Original test date (Orig. Test Date);

(b) Specification plate. Each tank built after July 1, 1985 shall have an additional plate, in the form specified in paragraph (a) of this section. It must be welded, brazed, or riveted to the jacket on the left side (on the right side prior to July 1, 1985) near the front, or at the control station, in a position readily legible to operating personnel. It must be marked with the information specified in paragraph (a) of this section and in addition, in characters at least 3/8-inches high, the following (parenthetical abbreviations may be used):

(1) Vehicle manufacturer (Veh. Mfr.);

(2) Manufacturer's vehicle serial number (Veh. No.);

(3) Lining material, if any (Lining);

(4) Date of manufacture (Date of Mfr.);

(5) Certificate date (Cert. Date);

(6) Design service temperature (Design Serv. Temp.);

(7) “Insulation for Oxygen Service” or “Not Authorized for Oxygen Service,” as appropriate;

(8) Maximum weight of lading for which the cargo tank is designed, in pounds (Max. Net Wt. __ lbs.);

(9) Marked rated holding time for at least one cryogenic liquid, in hours, and the name of that cryogenic liquid (MRHT __ hrs, name of cryogenic liquid). MRHT markings for additional cryogenic liquids may be displayed on or adjacent to the specification plate.

(c) The design weight of lading used in determining the loading in §§ 178.338-3(b), 178.338-10 (b) and (c), and 178.338-13 (b) and (c) must be shown as the maximum weight of lading marking required by paragraph (b) of this section.

[Amdt. 178-77, 48 FR 27706, June 16, 1983, as amended at 49 FR 24317, June 12, 1984; Amdt. 178-83, 50 FR 11066, Mar. 19, 1985; Amdt. 178-85, 51 FR 5976, Feb. 18, 1986]