Pipeline and Haz. Matls. Safety Admin., DOT
if the package is not visible during
transportation and is loaded by the
shipper and unloaded by the shipper or
consignee.
(2) Markings on a package which are
securely covered in transportation.
(3) The marking of a shipping name
on a package when the name describes
a material not regulated under this
subchapter.
[Amdt. 172-123, 55 FR 52591, Dec. 21, 1990, as
amended at 56 FR 66254, Dec. 20, 1991; 72 FR
55692, Oct. 1, 2007]

Section 172.304 Marking requirements.
(a) The marking required in this subpart - 
(1) Must be durable, in English and
printed on or affixed to the surface of a
package or on a label, tag, or sign.
(2) Must be displayed on a background of sharply contrasting color;
(3) Must be unobscured by labels or
attachments; and
(4) Must be located away from any
other marking (such as advertising)
that could substantially reduce its effectiveness.
(b) [Reserved]
[Amdt. 172-29, 41 FR 15996, Apr. 15, 1976, as
amended by Amdt. 172-29B, 41 FR 57067, Dec.
30, 1976]

Section 172.306

[Reserved]

Section 172.308 Authorized abbreviations.
(a) Abbreviations may not be used in
a proper shipping name marking except
as authorized in this section.
(b) The abbreviation  - ORM -  may be
used in place of the words  - Other Regulated Material. - 
(c) Abbreviations which appear as authorized descriptions in column 2 of the
Section 172.101 table (e.g.,  - TNT -  and  - PCB - )
are authorized.
[Amdt. 172-123, 55 FR 52591, Dec. 21, 1990, as
amended by Amdt. 172-145, 60 FR 49110, Sept.
21, 1995]

Section 172.310 Class 7 (radioactive) materials.
In addition to any other markings required by this subpart, each package
containing Class 7 (radioactive) materials must be marked as follows:
(a) Each package with a gross mass
greater than 50 kg (110 lb) must have
its gross mass including the unit of

Section 172.312

measurement (which may be abbreviated) marked on the outside of the
package.
(b) Each industrial, Type A, Type
B(U), or Type B(M) package must be
legibly and durably marked on the outside of the packaging, in letters at
least 12 mm (0.47 in) high, with the
words  - TYPE IP-1, -   - TYPE IP-2, - 
 - TYPE IP-3, -   - TYPE A, -   - TYPE
B(U) -  or  - TYPE B(M), -  as appropriate.
A package which does not conform to
Type IP-1, Type IP-2, Type IP-3, Type
A, Type B(U) or Type B(M) requirements may not be so marked.
(c) Each package which conforms to
an IP-1, IP-2, IP-3 or a Type A package
design must be legibly and durably
marked on the outside of the packaging with the international vehicle
registration code of the country of origin of the design. The international vehicle registration code for packages designed by a United States company or
agency is the symbol  - USA. - 
(d) Each package which conforms to
a Type B(U) or Type B(M) package design must have the outside of the outermost receptacle, which is resistant to
the effects of fire and water, plainly
marked by embossing, stamping or
other means resistant to the effects of
fire and water with a radiation symbol
that conforms to the requirements of
appendix B of this part.
(e) Each Type B(U), Type B(M) or
fissile material package destined for
export shipment must also be marked
 - USA -  in conjunction with the specification marking, or other package certificate identification. (See SectionSection 173.471,
173.472, and 173.473 of this subchapter.)
[Doc. No. RSPA-99-6283 (HM-230), 69 FR 3668,
Jan. 26, 2004, as amended at 79 FR 40609, July
11, 2014]

Section 172.312 Liquid hazardous materials
in non-bulk packagings.
(a) Except as provided in this section,
each non-bulk combination package
having inner packagings containing
liquid hazardous materials, single
packaging fitted with vents, or open
cryogenic receptacle intended for the
transport of refrigerated liquefied
gases must be:
(1) Packed with closures upward, and
(2) Legibly marked with package orientation markings that are similar to

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