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DHS/USCG RIN: 1625-AB44 Publication ID: Fall 2011 
Title: Carbon Dioxide Fire Suppression Systems on Commercial Vessels 
Abstract: The Coast Guard proposes to amend the current regulations for carbon dioxide fire suppression systems on commercial vessels. This proposed rule concerns the use of carbon dioxide (CO2) flooding systems to suppress fires on commercial vessels. Once, carbon dioxide systems were the only fire suppression systems that were suitable for certain manned spaces, but the potential lethality of carbon dioxide has always been a concern. In recent years, alternative systems have been developed that are comparable to carbon dioxide fire suppression, but are much safer in the event of an accidental discharge, or a discharge that takes place prematurely, before workers can evacuate the protected space. We would amend existing regulations to clarify that approved alternatives to carbon dioxide systems may be used, add new regulations to set general parameters for those approved alternatives, and add a new requirement for lockout valves in manned spaces using carbon dioxide systems. 
Agency: Department of Homeland Security(DHS)  Priority: Other Significant 
RIN Status: Previously published in the Unified Agenda Agenda Stage of Rulemaking: Final Rule Stage 
Major: Undetermined  Unfunded Mandates: No 
CFR Citation: 46 CFR 13    46 CFR 25    46 CFR 27    46 CFR 34    46 CFR 76    46 CFR 95    46 CFR 108    46 CFR 118   
Legal Authority: 33 USC 1903(b)    43 USC 1333    46 USC 2103    46 USC 3306    46 USC 3703    46 USC 4102    46 USC 4302    46 USC 4502    46 USC 6101    EO 12234    45 FR 58801    3 CFR, 1980 Comp p 277    DHS Delegation No 0170.1   
Legal Deadline:  None
Action Date FR Cite
NPRM  02/24/2010  75 FR 8432   
NPRM Comment Period End  05/25/2010    
Final Rule  01/00/2012    
Additional Information: The docket number for this rulemaking is USCG-2006-24797. The docket can be found at
Regulatory Flexibility Analysis Required: No  Government Levels Affected: None 
Small Entities Affected: No  Federalism: No 
Included in the Regulatory Plan: No 
RIN Information URL:   Public Comment URL:  
RIN Data Printed in the FR: No 
Related RINs: Previously reported as 1625-AB04 
Agency Contact:
LCDR Suzanne Hemann
Project Manager, Office of Design and Engineering Standards, CG-5214
Department of Homeland Security
U.S. Coast Guard
Commandant (CG-5214), 2100 Second Street SW., STOP 7126,
Washington, DC 20593-7126
Phone:202 372-1356

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