Section 172.102

49 CFR Ch. I (10-1-18 Edition)

greater than 0.3 Wh. Capacitors with an energy storage capacity of 0.3 Wh or less are
not subject to the requirements of this
subchapter.
Energy storage capacity means the energy
stored in a capacitor, as calculated according to the following equation,
Wh = 1/2CN(UR2SectionUL2)  (1/3600)
Using the nominal capacitance (CN), rated
voltage (UR) and the rated lower limit
voltage (UL).
Nickel-carbon asymmetric capacitors containing Class 8 alkaline electrolytes
must be transported as UN2795, Batteries, wet, filled with alkali, electric
storage.
379 When offered for transport by highway,
rail, or cargo vessel, anhydrous ammonia
adsorbed or absorbed on a solid contained
in ammonia dispensing systems or receptacles intended to form part of such systems is not subject to the requirements of
this subchapter if the following conditions
in this provision are met. In addition to
meeting the conditions in this provision,
transport on cargo aircraft only may be
authorized with prior approval of the Associate Administrator.
a. The adsorption or absorption presents
the following properties:
(1) The pressure at a temperature of 20 SectionC
(68 SectionF) in the receptacle is less than 0.6
bar (60 kPa);
(2) The pressure at a temperature of 35 SectionC
(95 SectionF) in the receptacle is less than 1 bar
(100 kPa);
(3) The pressure at a temperature of 85 SectionC
(185 SectionF) in the receptacle is less than 12
bar (1200 kPa).
b. The adsorbent or absorbent material
shall not meet the definition or criteria
for inclusion in Classes 1 to 8;
c. The maximum contents of a receptacle
shall be 10 kg of ammonia; and
d. Receptacles containing adsorbed or absorbed ammonia shall meet the following
conditions:
(1) Receptacles shall be made of a material
compatible with ammonia as specified in
ISO 11114-1:2012 (IBR, see Section 171.7 of this
subchapter);
(2) Receptacles and their means of closure
shall be hermetically sealed and able to
contain the generated ammonia;
(3) Each receptacle shall be able to withstand the pressure generated at 85 SectionC (185
SectionF) with a volumetric expansion no
greater than 0.1%;
(4) Each receptacle shall be fitted with a
device that allows for gas evacuation
once pressure exceeds 15 bar (1500 kPa)
without violent rupture, explosion or
projection; and
(5) Each receptacle shall be able to withstand a pressure of 20 bar (2000 kPa) with-

out leakage when the pressure relief device is deactivated.
e. When offered for transport in an ammonia dispenser, the receptacles shall be
connected to the dispenser in such a way
that the assembly is guaranteed to have
the same strength as a single receptacle.
f. The properties of mechanical strength
mentioned in this special provision shall
be tested using a prototype of a receptacle and/or dispenser filled to nominal
capacity, by increasing the temperature
until the specified pressures are reached.
g. The test results shall be documented,
shall be traceable, and shall be made
available to a representative of the Department upon request.
380 For transportation by private carrier in
a motor carrier only, this material is not
subject to the segregation requirements of
Section 177.848(d) of this subchapter under the following conditions:
a. The material is packaged in a DOT Specification 4BW240 cylinder, or in a DOT-51
portable tank.
b. The material may only be loaded with
Class 3, Class 8, and Division 4.1 materials in Packing Group II or III.
c. The motor carrier must maintain a satisfactory safety rating as prescribed in 49
CFR part 385.
381 For railroad flagging kits, see Section 173.184
(c) of this subchapter.
382 Packages containing toy plastic or
paper caps for toy pistols described as
 - UN0349, Articles, explosive, n.o.s. (Toy
caps), 1.4S -  or  - NA0337, Toy caps, 1.4S -  are
not subject to the subpart E (labeling) requirements of this part when offered for
transportation by motor vehicle, rail
freight, cargo vessel, and cargo aircraft
and, notwithstanding the packing method
assigned in Section 173.62 of this subchapter, in
conformance with the following conditions:
a. The toy plastic or paper caps must be in
the form of sheets, strips, rolls, or individual caps;
b. The caps must not contain more than an
average of twenty-five hundredths of a
grain of explosive composition per cap;
c. The caps must be packed inside packagings constructed of cardboard not less
than 0.013-inch in thickness, metal not
less than 0.008-inch in thickness, noncombustible plastic not less than 0.015inch in thickness, or a composite blister
package consisting of cardboard not less
than 0.013-inch in thickness and noncombustible plastic not less than 0.005inch in thickness that completely encloses the caps;
d. The minimum dimensions of each side
and each end of the cardboard packaging
must be 1/8th inch in height or more;
e. The number of caps inside each packaging must be limited so that not more

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