[Code of Federal Regulations]
[Title 49, Volume 2]
[Revised as of October 1, 2003]
From the U.S. Government Printing Office via GPO Access
[CITE: 49CFR]

[Page 356]
 
                        TITLE 49--TRANSPORTATION
 
 CHAPTER I--RESEARCH AND SPECIAL PROGRAMS ADMINISTRATION, DEPARTMENT OF 
                             TRANSPORTATION
 
                            Subpart D_Marking
 
Sec.  172.328  Cargo tanks.

    (a) Providing and affixing identification numbers. Unless a cargo 
tank is already marked with the identification numbers required by this 
subpart, the identification numbers must be provided or affixed as 
follows:
    (1) A person who offers a hazardous material to a motor carrier for 
transportation in a cargo tank shall provide the motor carrier the 
identification numbers on placards or shall affix orange panels 
containing the required identification numbers, prior to or at the time 
the material is offered for transportation.
    (2) A person who offers a cargo tank containing a hazardous material 
for transportation shall affix the required identification numbers on 
panels or placards prior to or at the time the cargo tank is offered for 
transportation.
    (3) For a cargo tank transported on or in a transport vehicle or 
freight container, if the identification number marking on the cargo 
tank required by Sec.  172.302(a) would not normally be visible during 
transportation--
    (i) The transport vehicle or freight container must be marked as 
required by Sec.  172.332 on each side and each end with the 
identification number specified for the material in the Sec.  172.101 
table; and
    (ii) When the cargo tank is permanently installed within an enclosed 
cargo body of the transport vehicle or freight container, the 
identification number marking required by Sec.  172.302(a) need only be 
displayed on each side and end of a cargo tank that is visible when the 
cargo tank is accessed.
    (b) Required markings: Gases. Except for certain nurse tanks which 
must be marked as specified in Sec.  173.315(m) of this subchapter, each 
cargo tank transporting a Class 2 material subject to this subchapter 
must be marked, in lettering no less than 50 mm (2.0 inches), on each 
side and each end with--
    (1) The proper shipping name specified for the gas in the Sec.  
172.101 table; or
    (2) An appropriate common name for the material (e.g., ``Refrigerant 
Gas'').
    (c) QT/NQT markings. Each MC 330 and MC 331 cargo tank must be 
marked near the specification plate, in letters no less than 50 mm (2.0 
inches) in height, with--
    (1) ``QT'', if the cargo tank is constructed of quenched and 
tempered steel; or
    (2) ``NQT'', if the cargo tank is constructed of other than quenched 
and tempered steel.
    (d) After October 3, 2005, each on-vehicle manually-activated remote 
shutoff device for closure of the internal self-closing stop valve must 
be identified by marking ``Emergency Shutoff'' in letters at least 0.75 
inches in height, in a color that contrasts with its background, and 
located in an area immediately adjacent to the means of closure.

[Amdt. 172-123, 55 FR 52592, Dec. 21, 1990, as amended at 56 FR 66255, 
Dec. 20, 1991; Amdt. 172-151, 62 FR 1228, Jan. 8, 1997; 62 FR 39045, 
July 22, 1997; 68 FR 19277, Apr. 18, 2003]