347 

Pipeline and Haz. Matls. Safety Admin., DOT 

§ 172.102 

66

Formulations of these substances con-

taining not less than 30 percent non-vola-
tile, non-flammable phlegmatizer are not 
subject to this subchapter. 

70

Black powder that has been classed in ac-

cordance with the requirements of § 173.56 
of this subchapter may be reclassed and of-
fered for domestic transportation as a Di-
vision 4.1 material if it is offered for trans-
portation and transported in accordance 
with the limitations and packaging re-
quirements of § 173.170 of this subchapter. 

74

During transport, this material must be 

protected from direct sunshine and stored 
or kept in a cool and well-ventilated place, 
away from all sources of heat. 

78

This entry may not be used to describe 

compressed air which contains more than 
23.5 percent oxygen. Compressed air con-
taining greater than 23.5 percent oxygen 
must be shipped using the description 
‘‘Compressed gas, oxidizing, n.o.s., 
UN3156.’’ 

79

This entry may not be used for mixtures 

that meet the definition for oxidizing gas. 

81

Polychlorinated biphenyl items, as de-

fined in 40 CFR 761.3, for which specifica-
tion packagings are impractical, may be 
packaged in non-specification packagings 
meeting the general packaging require-
ments of subparts A and B of part 173 of 
this subchapter. Alternatively, the item 
itself may be used as a packaging if it 
meets the general packaging requirements 
of subparts A and B of part 173 of this sub-
chapter. 

101

The name of the particular substance or 

article must be specified. 

102

The ends of the detonating cord must be 

tied fast so that the explosive cannot es-
cape. The articles may be transported as in 
Division 1.4 Compatibility Group D (1.4D) if 
all of the conditions specified in § 173.63(a) 
of this subchapter are met. 

103

Detonators which will not mass deto-

nate and undergo only limited propagation 
in the shipping package may be assigned to 
1.4B classification code. Mass detonate 
means that more than 90 percent of the de-
vices tested in a package explode prac-
tically simultaneously. Limited propaga-
tion means that if one detonator near the 
center of a shipping package is exploded, 
the aggregate weight of explosives, exclud-
ing ignition and delay charges, in this and 
all additional detonators in the outside 
packaging that explode may not exceed 25 
grams. 

105

The word ‘‘Agents’’ may be used instead 

of ‘‘Explosives’’ when approved by the As-
sociate Administrator. 

106

The recognized name of the particular 

explosive may be specified in addition to 
the type. 

107

The classification of the substance is ex-

pected to vary especially with the particle 
size and packaging but the border lines 

have not been experimentally determined; 
appropriate classifications should be 
verified following the test procedures in 
§§ 173.57 and 173.58 of this subchapter. 

108

Fireworks must be so constructed and 

packaged that loose pyrotechnic composi-
tion will not be present in packages during 
transportation. 

109

Rocket motors must be nonpropulsive 

in transportation unless approved in ac-
cordance with § 173.56 of this subchapter. A 
rocket motor to be considered ‘‘nonpropul-
sive’’ must be capable of unrestrained 
burning and must not appreciably move in 
any direction when ignited by any means. 

110

Fire extinguishers transported under 

UN1044 and oxygen cylinders transported 
for emergency use under UN1072 may in-
clude installed actuating cartridges (car-
tridges, power device of Division 1.4C or 
1.4S), without changing the classification 
of Division 2.2, provided the aggregate 
quantity of deflagrating (propellant) explo-
sives does not exceed 3.2 grams per cyl-
inder. Oxygen cylinders with installed ac-
tuating cartridges as prepared for trans-
portation must have an effective means of 
preventing inadvertent activation. 

111

Explosive substances of Division 1.1 

Compatibility Group A (1.1A) are forbidden 
for transportation if dry or not desen-
sitized, unless incorporated in a device. 

113

The sample must be given a tentative 

approval by an agency or laboratory in ac-
cordance with § 173.56 of this subchapter. 

114

Jet perforating guns, charged, oil well, 

without detonator may be reclassed to Di-
vision 1.4 Compatibility Group D (1.4D) if 
the following conditions are met: 
a. The total weight of the explosive con-

tents of the shaped charges assembled in 
the guns does not exceed 90.5 kg (200 
pounds) per vehicle; and 

b. The guns are packaged in accordance 

with Packing Method US 1 as specified in 
§ 173.62 of this subchapter. 

115

Boosters with detonator, detonator as-

semblies and boosters with detonators in 
which the total explosive charge per unit 
does not exceed 25 g, and which will not 
mass detonate and undergo only limited 
propagation in the shipping package may 
be assigned to 1.4B classification code. 
Mass detonate means more than 90 percent 
of the devices tested in a package explode 
practically simultaneously. Limited propa-
gation means that if one booster near the 
center of the package is exploded, the ag-
gregate weight of explosives, excluding ig-
nition and delay charges, in this and all 
additional boosters in the outside pack-
aging that explode may not exceed 25 g. 

116

Fuzes, detonating may be classed in Di-

vision 1.4 if the fuzes do not contain more 
than 25 g of explosive per fuze and are 
made and packaged so that they will not 
cause functioning of other fuzes, explosives 

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