[Code of Federal Regulations] [Title 49, Volume 2] [Revised as of October 1, 2003] From the U.S. Government Printing Office via GPO Access [CITE: 49CFR177.842] [Page 756-757] TITLE 49--TRANSPORTATION CHAPTER I--RESEARCH AND SPECIAL PROGRAMS ADMINISTRATION, DEPARTMENT OF TRANSPORTATION PART 177_CARRIAGE BY PUBLIC HIGHWAY--Table of Contents Subpart B_Loading and Unloading Sec. 177.842 Class 7 (radioactive) material. (a) The number of packages of Class 7 (radioactive) materials in any transport vehicle or in any single group in any storage location must be limited so that the total transport index number does not exceed 50. The total transport index of a group of packages and overpacks is determined by adding together the transport index number on the labels on the individual packages and overpacks in the group. This provision does not apply to exclusive use shipments described in Sec. Sec. 173.441(b), 173.457, and 173.427 of this subchapter. (b) Packages of Class 7 (radioactive) material bearing ``RADIOACTIVE YELLOW-II'' or ``RADIOACTIVE YELLOW-III'' labels may not be placed in a transport vehicle, storage location or in any other place closer than the distances shown in the following table to any area which may be continuously occupied by any passenger, employee, or animal, nor closer than the distances shown in the table to any package containing undeveloped film (if so marked), and must conform to the following conditions: (1) If more than one of these packages is present, the distance must be computed from the following table on the basis of the total transport index number determined by adding together the transport index number on the labels on the individual packages and overpacks in the vehicle or storeroom. (2) Where more than one group of packages is present in any single storage location, a single group may not have a total transport index greater than 50. Each group of packages must be handled and stowed not closer than 6 m (20 feet) (measured edge to edge) to any other group. The following table is to be used in accordance with the provisions of paragraph (b) of this section: ---------------------------------------------------------------------------------------------------------------- Minimum separation distance in meters (feet) to nearest Minimum undeveloped film in various times of transit distance in ------------------------------------------------------------------ meters (feet) to area of persons, or minimum Total transport index distance in Up to 2 2-4 hours 4-8 hours 8-12 hours Over 12 meters (feet) hours hours from dividing partition of cargo compartments ---------------------------------------------------------------------------------------------------------------- None......................... 0.0 (0) 0.0 (0) 0.0 (0) 0.0 (0) 0.0 (0) 0.0 (0) 0.1 to 1.0................... 0.3 (1) 0.6 (2) 0.9 (3) 1.2 (4) 1.5 (5) 0.3 (1) 1.1 to 5.0................... 0.9 (3) 1.2 (4) 1.8 (6) 2.4 (8) 3.4 (11) 0.6 (2) 5.1 to 10.0.................. 1.2 (4) 1.8 (6) 2.7 (9) 3.4 (11) 4.6 (15) 0.9 (3) 10.1 to 20.0................. 1.5 (5) 2.4 (8) 3.7 (12) 4.9 (16) 6.7 (22) 1.2 (4) [[Page 757]] 20.1 to 30.0................. 2.1 (7) 3.0 (10) 4.6 (15) 6.1 (20) 8.8 (29) 1.5 (5) 30.1 to 40.0................. 2.4 (8) 3.4 (11) 5.2 (17) 6.7 (22) 10.1 (33) 1.8 (6) 40.1 to 50.0................. 2.7 (9) 3.7 (12) 5.8 (19) 7.3 (24) 11.0 (36) 2.1 (7) ---------------------------------------------------------------------------------------------------------------- Note: The distance in this table must be measured from the nearest point on the nearest packages of Class 7 (radioactive) material. (c) Shipments of low specific activity materials and surface contaminated objects, as defined in Sec. 173.403 of this subchapter, must be loaded so as to avoid spillage and scattering of loose materials. Loading restrictions are set forth in Sec. 173.427 of this subchapter. (d) Packages must be so blocked and braced that they cannot change position during conditions normally incident to transportation. (e) Persons should not remain unnecessarily in a vehicle containing Class 7 (radioactive) materials. (f) Each fissile material, controlled shipment (as defined in Sec. 173.403 of this subchapter) must be transported in accordance with one of the methods prescribed in Sec. 173.457 of this subchapter. The transport controls must be adequate to assure that no fissile material, controlled shipment is transported in the same transport vehicle with any other fissile Class 7 (radioactive) material shipment. In loading and storage areas each fissile material, controlled shipment must be segregated by a distance of at least 6 m (20 feet) from any other package required to bear one of the ``Radioactive'' labels described in Sec. 172.403 of this subchapter. (g) For shipments transported under exclusive use conditions the radiation dose rate may not exceed 0.02 mSv per hour (2 mrem per hour) in any position normally occupied in the motor vehicle. For shipments transported as exclusive use under the provisions of Sec. 173.441(b) of this subchapter for packages with external radiation levels in excess of 2 mSv (200 mrem per hour) at the package surface, the motor vehicle must meet the requirements of a closed transport vehicle (Sec. 173.403 of this subchapter). The total transport index for packages containing fissile material may not exceed 100. [Amdt. 177-85, 60 FR 50334, Sept. 28, 1995, as amended at 63 FR 52850, Oct. 1, 1998; 66 FR 45385, Aug. 28, 2001]