[Code of Federal Regulations]
[Title 46, Volume 1]
[Revised as of January 1, 2007]
From the U.S. Government Printing Office via GPO Access
[CITE: 46CFR38.01-2]

[Page 493-494]
 
                           TITLE 46--SHIPPING
 
         CHAPTER I--COAST GUARD, DEPARTMENT OF HOMELAND SECURITY
 
PART 38_LIQUEFIED FLAMMABLE GASES--Table of Contents
 
                          Subpart 38.01_General
 
Sec. 38.01-2  Transportation of portable cylinders or portable tanks

containing or having previously contained liquefied flammable gases in 
dry cargo spaces--
          TB/ALL.

    (a) DOT cylinders, DOT Specification portable tanks or other 
approved portable tanks containing liquefied flammable gases may be 
transported under deck, provided the following requirements are met:
    (1) The cargo space shall be provided with efficient means of 
ventilation, be protected from artificial heat, and be readily 
accessible from hatches.
    (2) Containers shall be stored in such a position that the safety 
relief device is in communication with the vapor space of the container. 
They shall be

[[Page 494]]

properly stowed, dunnaged, and secured to prevent movement in any 
direction.
    (3) Unless a method acceptable to the Commandant is used, the 
containers shall not be overstowed in the same dry cargo space with 
other liquefied flammable gas containers, nor with other cargo.
    (4) The containers shall be suitably protected against physical 
damage from other cargo, ship's stores, or equipment in such spaces.
    (5) Cylinders shall have their valves protected at all times by one 
of the following methods:
    (i) By metal caps securely attached to the cylinders and of 
sufficient strength to protect the valves from injury.
    (ii) By having the valves recessed into the cylinders or otherwise 
protected so that they will not be subject to a blow if the cylinder is 
dropped on a flat surface.
    (6) Portable tanks shall have their valves protected at all times by 
a housing in accordance with the requirements under which they were 
manufactured.
    (7) Electrical circuits in the cargo spaces must meet the hazardous 
area requirements in subchapter J (Electrical Engineering Regulations) 
of this chapter. If an electrical circuit does not meet those 
requirements, it must be deenergized by a positive means and not 
reenergized until the cargo has been removed and the space has been 
tested and found free of flammable vapor.
    (8) During the stowage of portable cylinders or portable tanks in a 
hold or compartment that is not fitted with electrical fixtures meeting 
the hazardous area requirements of subchapter J (Electrical Engineering 
Regulations) of this chapter, portable lights must not be used within 
the space unless the portable lights are explosion-proof. Electrical 
connections for portable lights must be made from outlets on the weather 
deck. Hand flashlights used in the stowage area must be explosion-proof.
    (9) The following dangerous cargoes shall not be stowed in the same 
hold or compartment with liquefied flammable gas containers:
    (i) Division 1.1, 1.2, 1.3, or 1.4 (explosive) materials, as defined 
in 49 CFR 173.50.
    (ii) Flammable solids.
    (iii) Oxidizing materials.
    (iv) Corrosive liquids.
    (v) Poisonous articles.
    (vi) Cotton and similar fibrous materials.

[CGFR 66-33, 31 FR 15269, Dec. 6, 1966, as amended by CGFR 68-32, 33 FR 
5714, Apr. 12, 1968; CGD 74-125A, 47 FR 15231, Apr. 8, 1982; CGD 92-050, 
59 FR 39666, Aug. 5, 1994]