background image

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—