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EPA/AR

RIN: 2060-AN30

Publication ID: Spring 2010

Title: Protection of Stratospheric Ozone: Revision to Listing of Carbon Dioxide Total Flooding Fire Extinguishing Systems Restricting Use to Only Unoccupied Areas
Abstract: Section 612 of the Clean Air Act requires EPA to identify alternatives to Class I and II ozone-depleting substances and to publish lists of acceptable and unacceptable substitutes. Carbon dioxide is currently listed as an "acceptable" total flooding substitute for ozone-depleting halons. Carbon dioxide total flooding systems are used in industrial applications such as automobile paint rooms and in marine applications such as machinery spaces. Recent changes to national fire protection industry standards reflect a need to improve personnel safety requirements for carbon dioxide systems by limiting its applications. Based on new information on the continued and growing use of carbon dioxide total flooding fire extinguishing systems, EPA is proposing to revise the listing to "acceptable subject to narrowed use limits" to ensure that the use of this agent does not pose greater risk than other substitutes that are available. Use would be limited to unoccupied areas where personnel could not be exposed to lethal concentration of the agent.
Agency: Environmental Protection Agency(EPA)	Priority: Other Significant
RIN Status: Previously published in the Unified Agenda	Agenda Stage of Rulemaking: Proposed Rule Stage
Major: No	Unfunded Mandates: No
CFR Citation: 40 CFR 82
Legal Authority: 42 USC 7414 42 USC 7601 42 USC 7671 to 7671q

Legal Deadline: None

Timetable:

Action	Date	FR Cite
NPRM	09/00/2010
Final Action	07/00/2011

Additional Information: SAN No. 4991.
Regulatory Flexibility Analysis Required: No	Government Levels Affected: None
Small Entities Affected: No	Federalism: No
Included in the Regulatory Plan: No
International Impacts: This regulatory action will be likely to have international trade and investment effects, or otherwise be of international interest.
RIN Information URL: www.epa.gov/ozone/snap
RIN Data Printed in the FR: No
Agency Contact: Bella Maranion Environmental Protection Agency Air and Radiation 6205J, Washington, DC 20460 Phone:202 343-9749 Fax:202 343-2363 Email: Maranion.Bella@epa.gov