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Halon Options Task Group Update Chapter 2: Halocarbon Replacements

This document outlines critical updates from the IASFPWG meeting held on May 18, 2010, in London, focusing on halocarbon replacements. It provides a comprehensive overview of the classes of halocarbon replacements, including toxicology, environmental considerations, and commercialized replacements. Specifically, it discusses changes in classification for substances such as HCFCs and HFCs, reviews exposure limits, and highlights regulatory updates under the Montreal Protocol and other legislative frameworks. The document is essential for understanding safe and environmentally-friendly halon alternatives.

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Halon Options Task Group Update Chapter 2: Halocarbon Replacements

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  1. Halon Options Task Group UpdateChapter 2:Halocarbon Replacements Tom Cortina Halon Alternatives Research Corporation IASFPWG Meeting May 18, 2010 London, England

  2. Chapter Overview 2. - Classes of Halocarbon Replacements 2.1 - Toxicology 2.2 - Environmental Considerations 2.3 - Commercialized Replacements

  3. Chapter Update 2. Classes of Halocarbon Replacements • Hydrochlorofluorocarbons (HCFCs) - keep • Perfluorocarbons (PFCs or FCs) - remove • Hydrofluorocarbons (HFCs) - keep • Fluoroiodocarbons (FICs) - keep or remove? • Fluoroketones (FKs) - add • Hydrobromofluorocarbons (HBFCs) - do we add back because of BTP?

  4. Chapter Update 2.1 Toxicology • Information on acute, subchronic, chronic, anesthesia, cardiac sensitization - unchanged • Exposure Limits • Update information on NFPA 2001 and EPA SNAP exposure limits • Add information on ISO 14520 exposure limits • UK Halon Alternatives Group (HAG) allowable design concentrations - is this still relevant?

  5. Chapter Update 2.2 Environmental Considerations • Information on ODP, atmospheric lifetime, GWP, impacts of blends - unchanged • Regulatory Restrictions • Update information on Montreal Protocol controls, accelerated HCFC phase out • Add information on halon regulations in EU and Canada, revised critical use list (Annex VI), ICAO resolution phase out dates • Add information on potential regulation of HFCs as greenhouse gases - Montreal Protocol, US legislation, EU F-gas regulation

  6. Chapter Update 2.3 Commercialized Replacements • Update Table 7 and 12 • Eliminate agents no longer being sold such as PFCs, HCFC Blend A/D/E, HCFC-124?, CF3I? • Add new agents such as fluoroketones (FKs) • Update Table 8, 9, 10, 11, and 13 • Collect updated information from manufacturers on design concentrations, weight and volume equivalents, performance • Update information on environmental and toxicity properties

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