a. In 1991 the DOT
adopted into federal law a different system
for hazard classification of
dangerous goods. The new system is
essentially that which is used by
United Nations for the transportation
of dangerous goods. The total
phase-in period for the new
system is ten years. The 49 CFR
(App A, Ref 3) has more detailed
information regarding the
different phase-in periods for specific
situations and should be consulted
as the authoritative source. The
JHCS will continue to have the old
DOT information for the entire
phase-in period of ten years.
b. For new items
added to the JHCS after April 1991, there will
be no DOT (old system) information
added.
c. For those items
added after April 1991, the DOT hazard class
for Class 1 items will be the DoD
Hazard Division Compatibility
Group. Any parenthetical values
appearing in the DoD hazard class
will not be included in the DOT
hazard class. For those items where
the DoD Hazard Division
Compatibility Group is other than Class 1
(i.e., Class 2–9), the DOT class will consist
only of the DoD Hazard
Division. No Compatibility Group
for Class 2–9 will be included in
the DOT hazard class; whereas, it
will be for DoD.
d. For those items
entered in the JHCS after April 1991, the DOT
label for Class 1 items will be
the word “Explosive” followed by the
DOT hazard class (i.e., 1.2C). For
Class 2–9 consult 49 CFR (App
A, Ref 3).
e. For those items
entered after April 1991, the DOT container
marking for Class 1 items will
consist of the Proper Shipping Name
(as defined by the UN Serial
Number), the UN Serial Number, and
the NSN or part number. The NSN or
part number may be used
only if it is directly traceable
to a DOT assigned registration number
(i.e., “EX” number). All of these data elements are
in the JHCS.
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