[Code of Federal Regulations]
[Title 49, Volume 2]
[Revised as of October 1, 2004]
From the U.S. Government Printing Office via GPO Access
[CITE: 49CFR174.715]

[Page 682-683]
 
                        TITLE 49--TRANSPORTATION
 
 CHAPTER I--RESEARCH AND SPECIAL PROGRAMS ADMINISTRATION, DEPARTMENT OF 
                             TRANSPORTATION
 
PART 174_CARRIAGE BY RAIL--Table of Contents
 
   Subpart K_Detailed Requirements for Class 7 (Radioactive) Materials
 
Sec. 174.715  Cleanliness of transport vehicles after use.

    (a) Each transport vehicle used for transporting Class 7 
(radioactive) materials as exclusive use, as defined in Sec. 173.403 of 
this subchapter, must be surveyed with appropriate radiation detection 
instruments after each use. A transport vehicle may not be returned to 
service until the radiation dose rate at any accessible surface is 0.005 
mSv per hour (0.5 mrem per hour) or less,

[[Page 683]]

and there is no significant removable radioactive surface contamination, 
as defined in Sec. 173.443 of this subchapter.
    (b) This section does not apply to any transport vehicle used solely 
for transporting Class 7 (radioactive) materials if a survey of the 
interior surface shows that the radiation dose rate does not exceed 0.1 
mSv per hour (10 mrem per hour) at the interior surface or 0.02 mSv per 
hour (2 mrem per hour) at 1 m (3.3 feet) from any interior surface. The 
transport vehicle must be stenciled with the words ``FOR RADIOACTIVE 
MATERIALS USE ONLY'' in lettering at least 7.6 cm (3 inches) high in a 
conspicuous place on both sides of the exterior of the transport 
vehicle, and it must be kept closed at all times other than during 
loading and unloading.

[Amdt. 174-80, 60 FR 50332, Sept. 28, 1995, as amended by 66 FR 45383, 
Aug. 28, 2001]