[Code of Federal Regulations]
[Title 49, Volume 2]
[Revised as of October 1, 2002]
From the U.S. Government Printing Office via GPO Access
[CITE: 49CFR173.192]

[Page 513]
 
                        TITLE 49--TRANSPORTATION
 
 CHAPTER I--RESEARCH AND SPECIAL PROGRAMS ADMINISTRATION, DEPARTMENT OF 
                             TRANSPORTATION
 
PART 173--SHIPPERS--GENERAL REQUIREMENTS FOR SHIPMENTS AND PACKAGINGS--Table of Contents
 
Subpart E--Non-bulk Packaging for Hazardous Materials Other Than Class 1 
                               and Class 7
 
Sec. 173.192  Packaging for certain toxic gases in Hazard Zone A.

    When Sec. 172.101 of this subchapter specifies a toxic material must 
be packaged under this section, only specification cylinders are 
authorized, as follows:
    (a) Specification 3A1800, 3AA1800, 3AL1800, or 3E1800 cylinders, 
under the following conditions:
    (1) Specification 3A, 3AA, or 3AL cylinders may not exceed 57 kg 
(125 lb) water capacity (nominal).
    (2) Specification 3AL cylinders may only be offered for 
transportation or transported by highway and rail.
    (b) Packagings must conform to the requirements of Sec. 173.40.
    (c) For cylinders used for phosgene:
    (1) The filling density may not exceed 125 percent;
    (2) A cylinder may not contain more than 68 kg (150 lb) of phosgene; 
and
    (3) Each cylinder containing phosgene must be tested for leakage 
before it is offered for transportation or transported and must show no 
leakage. The leakage test must consist of immersing the cylinder and 
valve, without the protective cap attached, in a bath of water at a 
temperature of approximately 66  deg.C (150  deg.F) for at least 30 
minutes, during which time frequent examinations must be made to note 
any escape of gas. The valve of the cylinder may not be loosened after 
this test. Suitable safeguards must be provided to protect personnel and 
facilities should failure occur during the test. As an alternative, each 
cylinder containing phosgene may be tested for leakage by a method 
approved in writing by the Associate Administrator.

[67 FR 51643, Aug. 8, 2002]