871
Pipeline and Haz. Matls. Safety Admin., DOT
§ 175.701
all the packages on the aircraft are
each no greater than 50.
(2) On a cargo aircraft—
(i) Each single package on the air-
craft has a transport index no greater
than 10.0.
(ii) The combined transport index of
all the packages on the aircraft is no
greater than 200, and the combined
criticality index of all the packages on
the aircraft is no greater than—
(A) 50 on a non-exclusive use cargo
aircraft, or
(B) 100 on an aircraft assigned for the
exclusive use of the shipper [offeror]
for the specific shipment of fissile
Class 7 material. Instructions for the
exclusive use must be developed by the
shipper [offeror] and carrier, and the
instructions must accompany the ship-
ping papers.
(3) The combined transport index and
combined criticality index are deter-
mined by adding together the transport
index and criticality index numbers,
respectively, shown on the labels of the
individual packages.
(c) No person may carry in a pas-
senger-carrying aircraft any package
required to be labeled RADIOACTIVE
YELLOW–II or RADIOACTIVE YEL-
LOW–III label unless the package is
carried on the floor of the cargo com-
partment or freight container.
[71 FR 14604, Mar. 22, 2006, as amended at 74
FR 2268, Jan. 14, 2009]
§ 175.701
Separation distance require-
ments for packages containing
Class 7 (radioactive) materials in
passenger-carrying aircraft.
(a) The following table prescribes the
minimum separation distances that
must be maintained in a passenger-car-
rying aircraft between Class 7 (radio-
active) materials labeled RADIO-
ACTIVE YELLOW–II or RADIOACTIVE
YELLOW–III and passengers and crew:
Transport index or sum of
transport indexes of all pack-
ages in the aircraft or
predesignated area
Minimum separation
distances
Centimeters
Inches
0.1 to 1.0 ...............................
30
12
1.1 to 2.0 ...............................
50
20
2.1 to 3.0 ...............................
70
28
3.1 to 4.0 ...............................
85
34
4.1 to 5.0 ...............................
100
40
5.1 to 6.0 ...............................
115
46
6.1 to 7.0 ...............................
130
52
7.1 to 8.0 ...............................
145
57
8.1 to 9.0 ...............................
155
61
Transport index or sum of
transport indexes of all pack-
ages in the aircraft or
predesignated area
Minimum separation
distances
Centimeters
Inches
9.1 to 10.0 .............................
165
65
10.1 to 11.0 ...........................
175
69
11.1 to 12.0 ...........................
185
73
12.1 to 13.0 ...........................
195
77
13.1 to 14.0 ...........................
205
81
14.1 to 15.0 ...........................
215
85
15.1 to 16.0 ...........................
225
89
16.1 to 17.0 ...........................
235
93
17.1 to 18.0 ...........................
245
97
18.1 to 20.0 ...........................
260
102
20.1 to 25.0 ...........................
290
114
25.1 to 30.0 ...........................
320
126
30.1 to 35.0 ...........................
350
138
35.1 to 40.0 ...........................
375
148
40.1 to 45.0 ...........................
400
157
45.1 to 50.0 ...........................
425
167
(b) When transported aboard pas-
senger-carrying aircraft packages,
overpacks or freight containers labeled
Radioactive Yellow–II or Radioactive
Yellow–III must be separated from live
animals by a distance of at least 0.5 m
(20 inches) for journeys not exceeding
24 hours, and by a distance of at least
1.0 m (39 inches) for journeys longer
than 24 hours.
(c) Except as provided in paragraph
(d) of this section, the minimum sepa-
ration distances prescribed in para-
graphs (a) and (b) of this section are de-
termined by measuring the shortest
distance between the surfaces of the
Class 7 (radioactive) materials package
and the surfaces bounding the space oc-
cupied by passengers or animals. If
more than one package of Class 7 (ra-
dioactive) materials is placed in a pas-
senger-carrying aircraft, the minimum
separation distance for these packages
shall be determined in accordance with
paragraphs (a) and (b) of this section
on the basis of the sum of the transport
index numbers of the individual pack-
ages or overpacks.
(d)
Predesignated areas.
A package la-
beled RADIOACTIVE YELLOW–II or
RADIOACTIVE YELLOW–III may be
carried in a passenger-carrying aircraft
in accordance with a system of
predesignated areas established by the
aircraft operator. Each aircraft oper-
ator that elects to use a system of
predesignated areas shall submit a de-
tailed description of the proposed sys-
tem to the Associate Administrator for
approval prior to implementation of
the system. A proposed system of
predesignated areas is approved if the
872
49 CFR Ch. I (10–1–23 Edition)
§ 175.702
Associate Administrator determines
that it is designed to assure that:
(1) The packages can be placed in
each predesignated area in accordance
with the minimum separation dis-
tances prescribed in paragraph (a) of
this section; and
(2) The predesignated areas are sepa-
rated from each other by minimum dis-
tance equal to at least four times the
distances required by paragraphs (a)
and (b) of this section for the
predesignated area containing pack-
ages with the largest sum of transport
indexes.
§ 175.702
Separation distance require-
ments for packages containing
Class 7 (radioactive) materials in
cargo aircraft.
(a) No person may carry in a cargo
aircraft any package required by
§ 172.403 of this subchapter to be labeled
Radioactive Yellow–II or Radioactive
Yellow–III unless:
(1) The total transport index for all
packages does not exceed 50.0 and the
packages are carried in accordance
with § 175.701(a); or
(2) The total transport index for all
packages exceeds 50.0; and
(i) The separation distance between
the surfaces of the radioactive mate-
rials packages, overpacks or freight
containers and any space occupied by
live animals is at least 0.5 m (20 inches)
for journeys not exceeding 24 hours and
at least 1.0 m (39 inches) for journeys
longer than 24 hours; and
(ii) The minimum separation dis-
tances between the radioactive mate-
rial and any areas occupied by persons
that are specified in the following table
are maintained:
Transport index or sum of transport indexes of all packages in the aircraft or
predesignated area
Minimum separation distances
Centimeters
Inches
50.1 to 60.0 ...........................................................................................................................
465
183
60.1 to 70.0 ...........................................................................................................................
505
199
70.1 to 80.0 ...........................................................................................................................
545
215
80.1 to 90.0 ...........................................................................................................................
580
228
90.1 to 100.0 .........................................................................................................................
610
240
100.1 to 110.0 .......................................................................................................................
645
254
110.1 to 120.0 .......................................................................................................................
670
264
120.1 to 130.0 .......................................................................................................................
700
276
130.1 to 140.0 .......................................................................................................................
730
287
140.1 to 150.0 .......................................................................................................................
755
297
150.1 to 160.0 .......................................................................................................................
780
307
160.1 to 170.0 .......................................................................................................................
805
317
170.1 to 180.0 .......................................................................................................................
830
327
180.1 to 190.0 .......................................................................................................................
855
337
190.1 to 200.0 .......................................................................................................................
875
344
(b) In addition to the limits on com-
bined criticality safety indexes stated
in § 175.700(b),
(1) The criticality safety index of any
single group of packages must not ex-
ceed 50.0 (as used in this section, the
term ‘‘group of packages’’ means pack-
ages that are separated from each
other in an aircraft by a distance of 6
m (20 feet) or less); and
(2) Each group of packages must be
separated from every other group in
the aircraft by not less than 6 m (20
feet), measured from the outer surface
of each group.
[71 FR 14604, Mar. 22, 2006, as amended at 71
FR 54396, Sept. 14, 2006; 77 FR 60943, Oct. 5,
2012; 79 FR 40618, July 11, 2014]
§ 175.703
Other special requirements
for the acceptance and carriage of
packages containing Class 7 mate-
rials.
(a) No person may accept for carriage
in an aircraft packages of Class 7 mate-
rials, other than limited quantities,
contained in a rigid or non-rigid over-
pack, including a fiberboard box or
plastic bag, unless they have been pre-
pared for shipment in accordance with
§ 172.403(h) of this subchapter.
(b) Each shipment of fissile material
packages must conform to the require-
ments of §§ 173.457 and 173.459 of this
subchapter.
(c) No person shall offer or accept for
transportation, or transport, by air—