[Code of Federal Regulations]
[Title 46, Volume 7]
[Revised as of October 1, 2003]
From the U.S. Government Printing Office via GPO Access
[CITE: 46CFR194.10-25]

[Page 386-387]
 
                           TITLE 46--SHIPPING
 
   CHAPTER I--COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED)
 
PART 194--HANDLING, USE, AND CONTROL OF EXPLOSIVES AND OTHER HAZARDOUS MATERIALS--Table of Contents
 
                        Subpart 194.10--Magazines
 
Sec. 194.10-25  Ventilation.

    (a) Integral magazines. (1) All integral magazines shall be provided 
with natural or mechanical ventilation. Design calculations shall be 
submitted demonstrating that the system has sufficient capacity to 
maintain the magazine temperature below 100[deg] F. with 88[deg] F. 
weather air. Mechanical cooling may be used where ventilation 
requirements exceed 1,500 cubic feet per minute.
    (2) Ventilation systems shall be of watertight construction and 
shall serve no other space. Weather cowls shall be provided with a 
double layer of wire screen of not less than \1/8\-inch mesh. Metal 
watertight closures shall be provided for use when the ventilation 
system is not in operation. A 2-inch IPS bypass with check valve shall 
be provided in parallel with at least one of the ventilation closures to 
prevent pressure buildup.

[[Page 387]]

    (b) Magazine vans. (1) All magazine vans shall be provided with 
natural ventilation sufficient to maintain the inside air temperature 
below 130[deg] F. with an assumed outside temperature of 115[deg] F.
    (2) Ventilation supply weather openings shall be located at least 6 
feet above the deck. Exhaust terminals shall be located in the van 
overhead. Louvers or weather cowls with a double layer of wire screen of 
not less than \1/8\-inch mesh shall be provided for protection of 
weather openings.