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398 

49 CFR Ch. I (10–1–23 Edition) 

§ 172.303 

table. For example, a tank car marked 
‘‘NITRIC OXIDE’’ need not be re-
marked ‘‘NITRIC OXIDE, COM-
PRESSED’’. 

(g) A rail car, freight container, 

truck body or trailer in which the lad-
ing has been fumigated with any haz-
ardous material, or is undergoing fumi-
gation, must be marked as specified in 
§ 173.9 of this subchapter. 

[Amdt. 172–123, 55 FR 52591, Dec. 21, 1990, as 
amended at 56 FR 66254, Dec. 20, 1991; Amdt. 
172–150, 61 FR 50624, Sept. 26, 1996; Amdt. 172– 
151, 62 FR 1228, Jan. 8, 1997; 62 FR 39398, July 
22, 1997; 66 FR 45379, Aug. 28, 2001; 70 FR 73164, 
Dec. 9, 2005; 72 FR 55692, Oct. 1, 2007; 85 FR 
75712, Nov. 25, 2020] 

§ 172.303

Prohibited marking. 

(a) No person may offer for transpor-

tation or transport a package which is 
marked with the proper shipping name, 
the identification number of a haz-
ardous material or any other markings 
indicating that the material is haz-
ardous (e.g., RQ, INHALATION HAZ-
ARD) unless the package contains the 
identified hazardous material or its 
residue. 

(b) This section does not apply to— 
(1) Transportation of a package in a 

transport vehicle or freight container 
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] 

§ 172.304

Marking requirements. 

(a) The marking required in this sub-

part— 

(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 back-

ground 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 ef-
fectiveness. 

(b) [Reserved] 

[Amdt. 172–29, 41 FR 15996, Apr. 15, 1976, as 
amended by Amdt. 172–29B, 41 FR 57067, Dec. 
30, 1976] 

§ 172.306

[Reserved] 

§ 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 Reg-
ulated Material.’’ 

(c) Abbreviations which appear as au-

thorized descriptions in column 2 of the 
§ 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] 

§ 172.310

Class 7 (radioactive) mate-

rials. 

In addition to any other markings re-

quired by this subpart, each package 
containing Class 7 (radioactive) mate-
rials 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 
measurement (which may be abbre-
viated) 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 out-
side 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) require-
ments 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 pack-
aging with the international vehicle 
registration code of the country of ori-
gin of the design. The international ve-
hicle registration code for packages de-
signed by a United States company or 
agency is the symbol ‘‘USA.’’ 

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399 

Pipeline and Haz. Matls. Safety Admin., DOT 

§ 172.312 

(d) Each package which conforms to 

a Type B(U) or Type B(M) package de-
sign must have the outside of the out-
ermost 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 speci-
fication marking, or other package cer-
tificate identification. (See §§ 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] 

§ 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 ori-

entation markings that are similar to 
the illustration shown in this para-
graph, on two opposite vertical sides of 
the package with the arrows pointing 
in the correct upright direction. The 
arrows must be either black or red on 
white or other suitable contrasting 
background and commensurate with 
the size of the package. Depicting a 
rectangular border around the arrows 
is optional. 

(b) Arrows for purposes other than 

indicating proper package orientation 
may not be displayed on a package con-
taining a liquid hazardous material. 

(c) The requirements of paragraph (a) 

of this section do not apply to— 

(1) A non-bulk package with inner 

packagings which are cylinders. 

(2) Except when offered or intended 

for transportation by aircraft, pack-
ages containing flammable liquids in 
inner packagings of 1 L or less prepared 
in accordance with § 173.150 (b) or (c) of 
this subchapter. 

(3) When offered or intended for 

transportation by aircraft, packages 
containing liquid hazardous materials 
in inner packagings of 120 mL (4 fluid 
oz.) or less when packed with sufficient 
absorption material between the inner 
and outer packagings to completely ab-
sorb the liquid contents. 

(4) Liquids contained in manufac-

tured articles (e.g., alcohol or mercury 
in thermometers) which are leak-tight 
in all orientations. 

(5) A non-bulk package with hermeti-

cally sealed inner packagings not ex-
ceeding 500 mL each. 

(6) Packages containing liquid infec-

tious substances in primary receptacles 
not exceeding 50 mL (1.7 oz.).