[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: 46CFR34.15-35]

[Page 461]
 
                           TITLE 46--SHIPPING
 
         CHAPTER I--COAST GUARD, DEPARTMENT OF HOMELAND SECURITY
 
PART 34_FIREFIGHTING EQUIPMENT--Table of Contents
 
       Subpart 34.15_Carbon Dioxide Extinguishing Systems, Details
 
Sec. 34.15-35  Enclosure openings--T/ALL.

    (a) Except for cargo spaces, the operation of the carbon dioxide 
system shall automatically shut down any mechanical ventilation to that 
space. This will not be required where the carbon dioxide system is a 
secondary system in addition to another approved primary system 
protecting the space.
    (b) Where natural ventilation is provided for spaces protected by a 
carbon dioxide extinguishing system, provisions shall be made for easily 
and effectively closing off the ventilation.
    (c) Means shall be provided for closing all other openings to the 
space protected from outside such space. In this respect, relatively 
tight doors, shutters, or dampers shall be provided for openings in the 
lower portion of the space. The construction shall be such that openings 
in the upper portion of the space can be closed off either by 
permanently installed means or by the use of canvas or other material 
which is normally carried by the vessel.