Section 172.102

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

(3) Each neutron radiation detector must
be of welded metal construction with
brazed metal to ceramic feed through assemblies. These detectors must have a
minimum burst pressure of 1800 kPa as
demonstrated by design type qualification testing; and
(4) Each detector must be tested to a 1 
10Section10 cm3/s leaktightness standard before
filling.
b. Radiation detectors transported as individual components must be transported
as follows:
(1) They must be packed in a sealed intermediate plastic liner with sufficient absorbent or adsorbent material to absorb
or adsorb the entire gas contents.
(2) They must be packed in strong outer
packagings and the completed package
must be capable of withstanding a 1.8
meter (5.9 feet) drop without leakage of
gas contents from detectors.
(3) The total amount of gas from all detectors per outer packaging must not exceed
52 grams (1.83 ounces).
c. Completed neutron radiation detection
systems containing detectors meeting
the conditions of paragraph a(1) of this
special provision must be transported as
follows:
(1) The detectors must be contained in a
strong sealed outer casing;
(2) The casing must contain include sufficient absorbent or adsorbent material to
absorb or adsorb the entire gas contents;
(3) The completed system must be packed
in strong outer packagings capable of
withstanding a 1.8 meter (5.9 feet) drop
test without leakage unless a system-s
outer casing affords equivalent protection.
d. Except for transportation by aircraft,
neutron radiation detectors and radiation detection systems containing such
detectors transported in accordance with
paragraph a. of this special provision are
not subject to the labeling and
placarding requirements of part 172 of
this subchapter.
e. When transported by highway, rail, vessel, or as cargo on an aircraft, neutron
radiation detectors containing not more
than 1 gram of boron trifluoride, including those with solder glass joints are not
subject to any other requirements of this
subchapter provided they meet the requirements in paragraph a(1) of this special provision and are packed in accordance with paragraph a(2) of this special
provision. Radiation detection systems
containing such detectors are not subject
to any other requirements of this subchapter provided they are packed in accordance with paragraph a(3) of this special provision.
328 When lithium metal or lithium ion batteries are contained in the fuel cell system,

the item must be described under this
entry and the appropriate entries for
 - Lithium metal batteries contained in
equipment -  or  - Lithium ion batteries contained in equipment - .
332 Magnesium nitrate hexahydrate is not
subject to the requirements of this subchapter.
335 Mixtures of solids that are not subject
to this subchapter and environmentally
hazardous liquids or solids may be classified as  - Environmentally hazardous substances, solid, n.o.s, -  UN3077 and may be
transported under this entry, provided
there is no free liquid visible at the time
the material is loaded or at the time the
packaging or transport unit is closed. Each
transport unit must be leakproof when
used as bulk packaging.
336 The use of UN1H1 drums, UN3H1
jerricans, and UN6HA1 composite packagings which meet the requirements of
part 178 of the HMR at the Packing Group
I or II performance level. These packagings
are not required to: (1.) meet the venting
requirements in Section 173.24(g) or (2.) be marked
with the hydrostatic pressure test marking
specified in Section 173.24a(b)(4). Shipment of
packages under this special provision must
be made by private or contract motor carrier. Transportation of these packages also
requires the door of each van trailer to be
marked with  - Warning trailer may contain
chemical vapor. Do not enter until vapors
have dissipated. -  The driver of the transport vehicle and the consignee(s) must be
trained not to enter the transport vehicle
until the ammonia vapors have dissipated,
and the emergency response information
on the shipping paper must indicate that
the vehicle contains ammonia vapors. This
training must be documented in training
records required by Section 172.704(d). Transport
vehicles must be vented to prevent accumulation of vapors at a poisonous or flammable concentration.
337 Authorizes the use of regulated waste
containers manufactured prior to October
1, 2006 to be marked with the alternative
shipping name of Regulated medical waste,
UN3291 and arrows that deviate as prescribed in Section 172.312(a)(2) in that they may be
black or white.
338 Life Saving appliances, self-inflating
transported by motor vehicle only between
an U.S. Coast Guard approved inflatable
life raft servicing facility and a vessel are
only subject to the following requirements:
a. Prior to repacking into the life-saving
appliance, an installed inflation cylinder
must successfully meet and pass all inspection and test criteria and standards
of the raft manufacturer and the vessel
Flag State requirements for cylinders installed as part of life-saving appliances,
self-inflating (UN2990) used on marine
vessels. Additionally, each cylinder must

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