[Code of Federal Regulations]
[Title 49, Volume 2]
[Revised as of October 1, 2006]
From the U.S. Government Printing Office via GPO Access
[CITE: 49CFR175.705]

[Page 739-740]
 
                        TITLE 49--TRANSPORTATION
 
   CHAPTER I--PIPELINE AND HAZARDOUS MATERIALS SAFETY ADMINISTRATION, 
                      DEPARTMENT OF TRANSPORTATION
 
PART 175_CARRIAGE BY AIRCRAFT--Table of Contents
 
Subpart C_Specific Regulations Applicable According to Classification of 
                                Material
 
Sec.  175.705  Radioactive contamination.

    (a) A carrier shall take care to avoid possible inhalation, 
ingestion, or contact by any person with Class 7 (radioactive) materials 
that may have been released from their packagings.
    (b) When contamination is present or suspected, the package 
containing a Class 7 material, any loose Class 7 material, associated 
packaging material, and any other materials that have been contaminated 
must be segregated as far as practicable from personnel contact until 
radiological advice or assistance is obtained from the U.S. Department 
of Energy or appropriate State or local radiological authorities.
    (c) An aircraft in which Class 7 material has been released must be 
taken out of service and may not be returned to service or routinely 
occupied until the aircraft is checked for radioactive contamination and 
it is determined in accordance with Sec.  173.443 of this subchapter 
that the dose rate at every accessible surface is less than 0.005 mSv 
per hour (0.5 mrem per hour) and there is no significant removable 
surface contamination.

[[Page 740]]

    (d) Each aircraft used routinely for transporting Class 7 materials 
shall be periodically checked for radioactive contamination, and an 
aircraft must be taken out of service if contamination exceeds the level 
specified in paragraph (c). The frequency of these checks shall be 
related to the likelihood of contamination and the extent to which Class 
7 materials are transported.
    (e) In addition to the reporting requirements of (Sec. Sec.  171.15 
and 171.16 of this subchapter and Sec.  175.31 of this part, an aircraft 
operator shall notify the offeror at the earliest practicable moment 
following any incident in which there has been breakage, spillage, or 
suspected radioactive contamination involving Class 7 (radioactive) 
materials shipments.