products and products    be available for this
                                                                 containing closed cell   end-use with lower
                                                                 foams manufactured       overall risk to human
                                                                 with these substitutes   health and the
                                                                 on or before December    environment by the
                                                                 1, 2017 may be used      status change date.
                                                                 after that date.
Phenolic Insulation Board and          HFC-143a, HFC-134a, HFC- Unacceptable as of       These foam blowing
 Bunstock.                              245fa, HFC-365mfc, and   January 1, 2017,         agents have GWPs
                                        blends thereof.          except where allowed     ranging from 725 to
                                                                 under a narrowed use     4,470. Other
                                                                 limit.                   substitutes will be
                                                                Closed cell foam          available for this end-
                                                                 products and products    use with lower overall
                                                                 containing closed cell   risk to human health
                                                                 foams manufactured       and the environment by
                                                                 with these substitutes   the status change
                                                                 on or before December    date.
                                                                 1, 2017 may be used
                                                                 after that date.
Integral Skin Polyurethane...........  HFC-134a, HFC-245fa,     Unacceptable as of       These foam blowing
                                        HFC-365mfc, and blends   January 1, 2017,         agents have GWPs
                                        thereof; Formacel TI,    except where allowed     ranging from higher
                                        and Formacel Z-6.        under a narrowed use     than 370 to
                                                                 limit.                   approximately 1,500.
                                                                                Other substitutes will
                                                                                be available for this
                                                                                end-use with lower
                                                                                overall risk to human
                                                                                health and the
                                                                                environment by the
                                                                                status change date.
Rigid Polyurethane: Slabstock and      HFC-134a, HFC-245fa,     Unacceptable as of       These foam blowing
 Other.                                 HFC-365mfc and blends    January 1, 2019,         agents have GWPs
                                        thereof; Formacel TI,    except where allowed     ranging from higher
                                        and Formacel Z-6.        under a narrowed use     than 370 to
                                                                 limit.                   approximately 1,500.
                                                                Closed cell foam          Other substitutes will
                                                                 products and products    be available for this
                                                                 containing closed cell   end-use with lower
                                                                 foams manufactured       overall risk to human
                                                                 with these substitutes   health and the
                                                                 on or before January     environment by the
                                                                 1, 2019, may be used     status change date.
                                                                 after that date.
Rigid Polyurethane and                 HFC-134a, HFC-245fa,     Unacceptable as of       These foam blowing
 Polyisocyanurate Laminated             HFC-365mfc and blends    January 1, 2017,         agents have GWPs
 Boardstock.                            thereof.                 except where allowed     ranging from 725 to
                                                                 under a narrowed use     1,430. Other
                                                                 limit.                   substitutes will be
                                                                Closed cell foam          available for this end-
                                                                 products and products    use with lower overall
                                                                 containing closed cell   risk to human health
                                                                 foams manufactured       and the environment by
                                                                 with these substitutes   the status change
                                                                 on or before December    date.
                                                                 1, 2017 may be used
                                                                 after that date.
Rigid Polyurethane: Marine Flotation   HFC-134a, HFC-245fa,     Unacceptable as of       These foam blowing
 Foam.                                  HFC-365mfc and blends    January 1, 2020 except   agents have GWPs
                                        thereof; Formacel TI,    where allowed under a    ranging from higher
                                        and Formacel Z-6.        narrowed use limit.      than 370 to
                                                                Closed cell foam          approximately 1,500.
                                                                 products and products    Other substitutes will
                                                                 containing closed cell   be available for this
                                                                 foams manufactured       end-use with lower
                                                                 with these substitutes   overall risk to human
                                                                 on or before January     health and the
                                                                 1, 2020, may be used     environment by the
                                                                 after that date.         status change date.
Rigid Polyurethane: Commercial         HFC-134a, HFC-245fa,     Unacceptable as of       These foam blowing
 Refrigeration and Sandwich Panels.     HFC-365mfc, and blends   January 1, 2020 except   agents have GWPs
                                        thereof; Formacel TI,    where allowed under a    ranging from higher
                                        and Formacel Z-6.        narrowed use limit.      than 370 to
                                                                Closed cell foam          approximately 1,500.
                                                                 products and products    Other substitutes will
                                                                 containing closed cell   be available for this
                                                                 foams manufactured       end-use with lower
                                                                 with these substitutes   overall risk to human
                                                                 on or before January     health and the
                                                                 1, 2020, may be used     environment by the
                                                                 after that date.         status change date.
Rigid Polyurethane: Appliance........  HFC-134a, HFC-245fa,     Unacceptable as of       These foam blowing
                                        HFC-365mfc and blends    January 1, 2020,         agents have GWPs
                                        thereof; Formacel TI,    except where allowed     ranging from higher
                                        and Formacel Z-6.        under a narrowed use     than 370 to
                                                                 limit.                   approximately 1,500.
                                                                Closed cell foam          Other substitutes will
                                                                 products and products    be available for this
                                                                 containing closed cell   end-use with lower
                                                                 foams manufactured       overall risk to human
                                                                 with these substitutes   health and the
                                                                 on or before January     environment by the
                                                                 1, 2020, may be used     status change date.
                                                                 after that date.
Polystyrene: Extruded Boardstock and   HFC-134a, HFC-245fa,     Unacceptable as of       These foam blowing
 Billet.                                HFC-365mfc, and blends   January 1, 2021,         agents have GWPs
                                        thereof; Formacel TI,    except where allowed     ranging from higher
                                        Formacel B, and          under a narrowed use     than 140 to
                                        Formacel Z-6.            limit.                   approximately 1,500.
                                                                Closed cell foam          Other substitutes will
                                                                 products and products    be available for this
                                                                 containing closed cell   end-use with lower
                                                                 foams manufactured       overall risk to human
                                                                 with these substitutes   health and the
                                                                 on or before January     environment by the
                                                                 1, 2021, may be used     status change date.
                                                                 after that date.

Polyolefin...........................  HFC-134a, HFC-245fa,     Unacceptable as of       These foam blowing
                                        HFC-365mfc, and blends   January 1, 2020,         agents have GWPs
                                        thereof; Formacel TI,    except where allowed     ranging from higher
                                        and Formacel Z-6.        under a narrowed use     than 370 to
                                                                 limit.                   approximately 1,500.
                                                                Closed cell foam          Other substitutes will
                                                                 products and products    be available for this
                                                                 containing closed cell   end-use with lower
                                                                 foams manufactured       overall risk to human
                                                                 with these substitutes   health and the
                                                                 on or before January     environment by the
                                                                 1, 2020, may be used     status change date.
                                                                 after that date.
----------------------------------------------------------------------------------------------------------------

* * * * *

0
9. Add appendix V to subpart G of part 82 to read as follows:

Appendix V to Subpart G of Part 82--Substitutes Subject to Use
Restrictions and Unacceptable Substitutes Listed in the December 1,
2016 Final Rule

                               Refrigerants--Acceptable Subject to Use Conditions
----------------------------------------------------------------------------------------------------------------
           End-use               Substitute        Decision           Use conditions         Further information
----------------------------------------------------------------------------------------------------------------
Commercial ice machines       Propane (R-290)  Acceptable,      As of January 3, 2017:      Applicable OSHA
 (self-contained) (new only).                   subject to use  This refrigerant may be      requirements at 29
                                                conditions.      used only in new            CFR part 1910 must
                                                                 equipment designed          be followed,
                                                                 specifically and clearly    including those at
                                                                 identified for the          29 CFR 1910.106
                                                                 refrigerant--i.e., this     (flammable and
                                                                 refrigerant may not be      combustible
                                                                 used as a conversion or     liquids), 1910.110
                                                                 ``retrofit'' refrigerant    (storage and
                                                                 for existing equipment.     handling of
                                                                This refrigerant may be      liquefied petroleum
                                                                 used only in self-          gases), 1910.157
                                                                 contained commercial ice    (portable fire
                                                                 machines that meet all      extinguishers), and
                                                                 requirements listed in      1910.1000 (toxic
                                                                 Supplement SA to UL         and hazardous
                                                                 563.\1\ \2\ \5\ In cases    substances).
                                                                 where this rule includes   Proper ventilation
                                                                 requirements more           should be
                                                                 stringent than those in     maintained at all
                                                                 UL 563, the equipment       times during the
                                                                 must meet the               manufacture and
                                                                 requirements of the final   storage of
                                                                 rule in place of the        equipment
                                                                 requirements in the UL      containing
                                                                 Standard.                   hydrocarbon
                                                                The charge size must not     refrigerants
                                                                 exceed 150g (5.29 oz) in    through adherence
                                                                 each refrigerant circuit    to good
                                                                 of a commercial ice         manufacturing
                                                                 machine.                    practices as per 29
                                                                As provided in clauses       CFR 1910.106. If
                                                                 SA6.1.1 and SA6.1.2 of UL   refrigerant levels
                                                                 563, the following          in the air
                                                                 markings must be attached   surrounding the
                                                                 at the locations provided   equipment rise
                                                                 and must be permanent:.     above one-fourth of
                                                                (a) ``DANGER--Risk of Fire   the lower
                                                                 or Explosion. Flammable     flammability limit,
                                                                 Refrigerant Used. Do Not    the space should be
                                                                 Use Mechanical Devices To   evacuated and re-
                                                                 Defrost Refrigerator. Do    entry should occur
                                                                 Not Puncture Refrigerant    only after the
                                                                 Tubing.'' This marking      space has been
                                                                 must be provided on or      properly
                                                                 near any evaporators that   ventilated.
                                                                 can be contacted by the    Technicians and
                                                                 consumer.                   equipment
                                                                (b) ``DANGER--Risk of Fire   manufacturers
                                                                 or Explosion. Flammable     should wear
                                                                 Refrigerant Used. To Be     appropriate
                                                                 Repaired Only By Trained    personal protective
                                                                 Service Personnel. Do Not   equipment,
                                                                 Puncture Refrigerant        including chemical
                                                                 Tubing.'' This marking      goggles and
                                                                 must be located near the    protective gloves,
                                                                 machine compartment.        when handling
                                                                (c) ``CAUTION--Risk of       propane. Special
                                                                 Fire or Explosion.          care should be
                                                                 Flammable Refrigerant       taken to avoid
                                                                 Used. Consult Repair        contact with the
                                                                 Manual/Owner's Guide        skin since propane,
                                                                 Before Attempting To        like many
                                                                 Service This Product. All   refrigerants, can
                                                                 Safety Precautions Must     cause freeze burns
                                                                 be Followed.'' This         on the skin.
                                                                 marking must be located    A Class B dry powder
                                                                 near the machine            type fire
                                                                 compartment.                extinguisher should
                                                                (d) ``CAUTION--Risk of       be kept nearby.
                                                                 Fire or Explosion.         Technicians should
                                                                 Dispose of Properly In      only use spark-
                                                                 Accordance With Federal     proof tools when
                                                                 Or Local Regulations.       working on
                                                                 Flammable Refrigerant       equipment with
                                                                 Used.'' This marking must   propane.
                                                                 be provided on the         Any recovery
                                                                 exterior of the             equipment used
                                                                 refrigeration equipment.    should be designed
                                                                (e) ``CAUTION--Risk of       for flammable
                                                                 Fire or Explosion Due To    refrigerants.
                                                                 Puncture Of Refrigerant    Any refrigerant
                                                                 Tubing; Follow Handling     releases should be
                                                                 Instructions Carefully.     in a well-
                                                                 Flammable Refrigerant       ventilated area,
                                                                 Used.'' This marking must   such as outside of
                                                                 be provided near all        a building.
                                                                 exposed refrigerant        Only technicians
                                                                 tubing.                     specifically
                                                                All of these markings must   trained in handling
                                                                 be in letters no less       flammable
                                                                 than 6.4 mm (\1/4\ inch)    refrigerants should
                                                                 high.                       service equipment
                                                                The equipment must have      containing propane.
                                                                 red Pantone Matching        Technicians should
                                                                 System (PMS) #185 marked    gain an
                                                                 pipes, hoses, or other      understanding of
                                                                 devices through which the   minimizing the risk
                                                                 refrigerant passes, to      of fire and the
                                                                 indicate the use of a       steps to use
                                                                 flammable refrigerant.      flammable
                                                                 This color must be          refrigerants
                                                                 applied at all service      safely.
                                                                 ports and other parts of   Room occupants
                                                                 the system where service    should evacuate the
                                                                 puncturing or other         space immediately
                                                                 actions creating an         following the
                                                                 opening from the            accidental release
                                                                 refrigerant circuit to      of this
                                                                 the atmosphere might be     refrigerant.
                                                                 expected and must extend   If a service port is
                                                                 a minimum of one (1) inch   added then,
                                                                 in both directions from     commercial ice
                                                                 such locations.             machines or
                                                                                equipment using
                                                                                propane should have
                                                                                service aperture
                                                                                fittings that
                                                                                differ from
                                                                                fittings used in
                                                                                equipment or
                                                                                containers using
                                                                                non-flammable
                                                                                refrigerant.
                                                                                ``Differ'' means
                                                                                that either the
                                                                                diameter differs by
                                                                                at least \1/16\
                                                                                inch or the thread
                                                                                direction is
                                                                                reversed (i.e.,
                                                                                right-handed vs.
                                                                                left-handed). These
                                                                                different fittings
                                                                                should be
                                                                                permanently affixed
                                                                                to the unit at the
                                                                                point of service
                                                                                and maintained
                                                                                until the end-of-
                                                                                life of the unit,
                                                                                and should not be
                                                                                accessed with an
                                                                                adaptor.

Very low temperature          Propane (R-290)  Acceptable,      As of January 3, 2017:      Applicable OSHA
 refrigeration equipment                        subject to use  This refrigerant may be      requirements at 29
 (new only).                                    conditions.      used only in new            CFR part 1910 must
                                                                 equipment designed          be followed,
                                                                 specifically and clearly    including those at
                                                                 identified for the          29 CFR 1910.94
                                                                 refrigerant--i.e., this     (ventilation) and
                                                                 refrigerant may not be      1910.106 (flammable
                                                                 used as a conversion or     and combustible
                                                                 ``retrofit'' refrigerant    liquids), 1910.110
                                                                 for existing equipment.     (storage and
                                                                This refrigerant may only    handling of
                                                                 be used in equipment that   liquefied petroleum
                                                                 meets all requirements in   gases), 1910.157
                                                                 Supplement SB to UL         (portable fire
                                                                 471.\1\ \2\ \4\ In cases    extinguishers), and
                                                                 where the final rule        1910.1000 (toxic
                                                                 includes requirements       and hazardous
                                                                 more stringent than those   substances).
                                                                 of UL 471, the appliance   Proper ventilation
                                                                 must meet the               should be
                                                                 requirements of the final   maintained at all
                                                                 rule in place of the        times during the
                                                                 requirements in the UL      manufacture and
                                                                 Standard.                   storage of
                                                                The charge size for the      equipment
                                                                 equipment must not exceed   containing
                                                                 150 grams (5.29 ounces)     hydrocarbon
                                                                 in each refrigerant         refrigerants
                                                                 circuit of the very low     through adherence
                                                                 temperature refrigeration   to good
                                                                 equipment.                  manufacturing
                                                                As provided in clauses       practices as per 29
                                                                 SB6.1.2 to SB6.1.5 of UL    CFR 1910.106. If
                                                                 471, the following          refrigerant levels
                                                                 markings must be attached   in the air
                                                                 at the locations provided   surrounding the
                                                                 and must be permanent:.     equipment rise
                                                                (a) ``DANGER--Risk of Fire   above one-fourth of
                                                                 or Explosion. Flammable     the lower
                                                                 Refrigerant Used. Do Not    flammability limit,
                                                                 Use Mechanical Devices To   the space should be
                                                                 Defrost Refrigerator. Do    evacuated and re-
                                                                 Not Puncture Refrigerant    entry should occur
                                                                 Tubing.'' This marking      only after the
                                                                 must be provided on or      space has been
                                                                 near any evaporators that   properly
                                                                 can be contacted by the     ventilated.
                                                                 consumer.                  Technicians and
                                                                (b) ``DANGER--Risk of Fire   equipment
                                                                 or Explosion. Flammable     manufacturers
                                                                 Refrigerant Used. To Be     should wear
                                                                 Repaired Only By Trained    appropriate
                                                                 Service Personnel. Do Not   personal protective
                                                                 Puncture Refrigerant        equipment,
                                                                 Tubing.'' This marking      including chemical
                                                                 must be located near the    goggles and
                                                                 machine compartment.        protective gloves,
                                                                (c) ``CAUTION--Risk of       when handling
                                                                 Fire or Explosion.          propane. Special
                                                                 Flammable Refrigerant       care should be
                                                                 Used. Consult Repair        taken to avoid
                                                                 Manual/Owner's Guide        contact with the
                                                                 Before Attempting To        skin since propane,
                                                                 Service This Product. All   like many
                                                                 Safety Precautions Must     refrigerants, can
                                                                 be Followed.'' This         cause freeze burns
                                                                 marking must be located     on the skin.
                                                                 near the machine           A Class B dry powder
                                                                 compartment.                type fire
                                                                (d) ``CAUTION--Risk of       extinguisher should
                                                                 Fire or Explosion.          be kept nearby.
                                                                 Dispose of Properly In     Technicians should
                                                                 Accordance With Federal     only use spark-
                                                                 Or Local Regulations.       proof tools when
                                                                 Flammable Refrigerant       working on
                                                                 Used.'' This marking must   equipment with
                                                                 be provided on the          flammable
                                                                 exterior of the             refrigerants.
                                                                 refrigeration equipment.   Any recovery
                                                                (e) ``CAUTION--Risk of       equipment used
                                                                 Fire or Explosion Due To    should be designed
                                                                 Puncture Of Refrigerant     for flammable
                                                                 Tubing; Follow Handling     refrigerants.
                                                                 Instructions Carefully.    Any refrigerant
                                                                 Flammable Refrigerant       releases should be
                                                                 Used.'' This marking must   in a well-
                                                                 be provided near all        ventilated area,
                                                                 exposed refrigerant         such as outside of
                                                                 tubing.                     a building.
                                                                All of these markings must  Only technicians
                                                                 be in letters no less       specifically
                                                                 than 6.4 mm (1/4 inch)      trained in handling
                                                                 high.                       flammable
                                                                The equipment must have      refrigerants should
                                                                 red PMS #185 marked         service equipment
                                                                 pipes, hoses, or other      containing propane.
                                                                 devices through which the   Technicians should
                                                                 refrigerant passes, to      gain an
                                                                 indicate the use of a       understanding of
                                                                 flammable refrigerant.      minimizing the risk
                                                                 This color must be          of fire and the
                                                                 applied at all service      steps to use
                                                                 ports and other parts of    flammable
                                                                 the system where service    refrigerants
                                                                 puncturing or other         safely.
                                                                 actions creating an        Room occupants
                                                                 opening from the            should evacuate the
                                                                 refrigerant circuit to      space immediately
                                                                 the atmosphere might be     following the
                                                                 expected and must extend    accidental release
                                                                 a minimum of one (1) inch   of this
                                                                 in both directions from     refrigerant.
                                                                 such locations.            If a service port is
                                                                                added, then very
                                                                                low temperature
                                                                                equipment using
                                                                                propane should have
                                                                                service aperture
                                                                                fittings that
                                                                                differ from
                                                                                fittings used in
                                                                                equipment or
                                                                                containers using
                                                                                non-flammable
                                                                                refrigerant.
                                                                                ``Differ'' means
                                                                                that either the
                                                                                diameter differs by
                                                                                at least \1/16\
                                                                                inch or the thread
                                                                                direction is
                                                                                reversed (i.e.,
                                                                                right-handed vs.
                                                                                left-handed). These
                                                                                different fittings
                                                                                should be
                                                                                permanently affixed
                                                                                to the unit at the
                                                                                point of service
                                                                                and maintained
                                                                                until the end-of-
                                                                                life of the unit,
                                                                                and should not be
                                                                                accessed with an
                                                                                adaptor.
                                                                                Very low temperature
                                                                                equipment using
                                                                                propane may also
                                                                                use another
                                                                                acceptable
                                                                                refrigerant
                                                                                substitute in a
                                                                                separate
                                                                                refrigerant circuit
                                                                                or stage (e.g., one
                                                                                temperature stage
                                                                                with propane and a
                                                                                second stage with
                                                                                ethane).

Water coolers (new only)....  Propane (R-290)  Acceptable,      As of January 3, 2017:      Applicable OSHA
                                                subject to use  This refrigerant may be      requirements at 29
                                                conditions.      used only in new            CFR part 1910 must
                                                                 equipment designed          be followed,
                                                                 specifically and clearly    including those at
                                                                 identified for the          29 CFR 1910.94
                                                                 refrigerant--i.e., this     (ventilation) and
                                                                 refrigerant may not be      1910.106 (flammable
                                                                 used as a conversion or     and combustible
                                                                 ``retrofit'' refrigerant    liquids), 1910.110
                                                                 for existing equipment.     (storage and
                                                                This refrigerant may be      handling of
                                                                 used only in water          liquefied petroleum
                                                                 coolers that meet all       gases), 1910.157
                                                                 requirements listed in      (portable fire
                                                                 Supplement SB to UL 399     extinguishers), and
                                                                 \1\ \2\ \3\ In cases        1910.1000 (toxic
                                                                 where the rule includes     and hazardous
                                                                 requirements more           substances).
                                                                 stringent than those of    Proper ventilation
                                                                 the UL 399, the appliance   should be
                                                                 must meet the               maintained at all
                                                                 requirements of the final   times during the
                                                                 rule in place of the        manufacture and
                                                                 requirements in the UL      storage of
                                                                 Standard.                   equipment
                                                                The charge size must not     containing
                                                                 exceed 60 grams (2.12       hydrocarbon
                                                                 ounces) per refrigerant     refrigerants
                                                                 circuit in the water        through adherence
                                                                 cooler.                     to good
                                                                The equipment must have      manufacturing
                                                                 red PMS #185 marked         practices as per 29
                                                                 pipes, hoses, or other      CFR 1910.106. If
                                                                 devices through which the   refrigerant levels
                                                                 refrigerant passes, to      in the air
                                                                 indicate the use of a       surrounding the
                                                                 flammable refrigerant.      equipment rise
                                                                 This color must be          above one-fourth of
                                                                 applied at all service      the lower
                                                                 ports and other parts of    flammability limit,
                                                                 the system where service    the space should be
                                                                 puncturing or other         evacuated and re-
                                                                 actions creating an         entry should occur
                                                                 opening from the            only after the
                                                                 refrigerant circuit to      space has been
                                                                 the atmosphere might be     properly
                                                                 expected and must extend    ventilated.
                                                                 a minimum of one (1) inch  Technicians and
                                                                 in both directions from     equipment
                                                                 such locations.             manufacturers
                                                                As provided in clauses       should wear
                                                                 SB6.1.2 to SB6.1.5 of UL    appropriate
                                                                 399, the following          personal protective
                                                                 markings must be attached   equipment,
                                                                 at the locations provided   including chemical
                                                                 and must be permanent:.     goggles and
                                                                (a) ``DANGER--Risk of Fire   protective gloves,
                                                                 or Explosion. Flammable     when handling
                                                                 Refrigerant Used. Do Not    propane. Special
                                                                 Use Mechanical Devices To   care should be
                                                                 Defrost Refrigerator. Do    taken to avoid
                                                                 Not Puncture Refrigerant    contact with the
                                                                 Tubing.'' This marking      skin since propane,
                                                                 must be provided on or      like many
                                                                 near any evaporators that   refrigerants, can
                                                                 can be contacted by the     cause freeze burns
                                                                 consumer.                   on the skin.
                                                                (b) ``DANGER--Risk of Fire  A Class B dry powder
                                                                 or Explosion. Flammable     type fire
                                                                 Refrigerant Used. To Be     extinguisher should
                                                                 Repaired Only By Trained    be kept nearby.
                                                                 Service Personnel. Do Not  Technicians should
                                                                 Puncture Refrigerant        only use spark-
                                                                 Tubing.'' This marking      proof tools when
                                                                 must be located near the    working on
                                                                 machine compartment.        equipment with
                                                                (c) ``CAUTION--Risk of       flammable
                                                                 Fire or Explosion.          refrigerants.
                                                                 Flammable Refrigerant      Any recovery
                                                                 Used. Consult Repair        equipment used
                                                                 Manual/Owner's Guide        should be designed
                                                                 Before Attempting To        for flammable
                                                                 Service This Product. All   refrigerants.
                                                                 Safety Precautions Must    Any refrigerant
                                                                 be Followed.'' This         releases should be
                                                                 marking must be located     in a well-
                                                                 near the machine            ventilated area,
                                                                 compartment.                such as outside of
                                                                (d) ``CAUTION--Risk of       a building.
                                                                 Fire or Explosion.         Only technicians
                                                                 Dispose of Properly In      specifically
                                                                 Accordance With Federal     trained in handling
                                                                 Or Local Regulations.       flammable
                                                                 Flammable Refrigerant       refrigerants should
                                                                 Used.'' This marking must   service equipment
                                                                 be provided on the          containing propane.
                                                                 exterior of the             Technicians should
                                                                 refrigeration equipment.    gain an
                                                                (e) ``CAUTION--Risk of       understanding of
                                                                 Fire or Explosion Due To    minimizing the risk
                                                                 Puncture Of Refrigerant     of fire and the
                                                                 Tubing; Follow Handling     steps to use
                                                                 Instructions Carefully.     flammable
                                                                 Flammable Refrigerant       refrigerants
                                                                 Used.'' This marking must   safely.
                                                                 be provided near all       Room occupants
                                                                 exposed refrigerant         should evacuate the
                                                                 tubing.                     space immediately
                                                                                following the
                                                                                accidental release
                                                                                of this
                                                                                refrigerant.
                                                                                If a service port is
                                                                                added, then water
                                                                                coolers or
                                                                                equipment using
                                                                                propane should have
                                                                                service aperture
                                                                                fittings that
                                                                                differ from
                                                                                fittings used in
                                                                                equipment or
                                                                                containers using
                                                                                non-flammable
                                                                                refrigerant.
                                                                                ``Differ'' means
                                                                                that either the
                                                                                diameter differs by
                                                                                at least \1/16\
                                                                                inch or the thread
                                                                                direction is
                                                                                reversed (i.e.,
                                                                                right-handed vs.
                                                                                left-handed). These
                                                                                different fittings
                                                                                should be
                                                                                permanently affixed
                                                                                to the unit at the
                                                                                point of service
                                                                                and maintained
                                                                                until the end-of-
                                                                                life of the unit,
                                                                                and should not be
                                                                                accessed with an
                                                                                adaptor.
----------------------------------------------------------------------------------------------------------------
\1\ The Director of the Federal Register approves this incorporation by reference (5 U.S.C. 552(a) and 1 CFR
  part 51). You may inspect a copy at U.S. EPA's Air and Radiation Docket; EPA West Building, Room 3334, 1301
  Constitution Ave. NW., Washington, DC or at the National Archives and Records Administration (NARA). For
  questions regarding access to these standards, the telephone number of EPA's Air and Radiation Docket is 202-
  566-1742. For information on the availability of this material at NARA, call<PHONE_NUMBER>, or go to: http://www.archives.gov/federal_register/code_of_federal_regulations/ibr_locations.html.
\2\ You may obtain the material from: Underwriters Laboratories Inc. (UL) COMM 2000; 151 Eastern Avenue,
  Bensenville, IL 60106<EMAIL_ADDRESS>1-888-853-3503 in the U.S. or Canada (other countries dial +1-415-
  352-2168); http://ulstandards.ul.com/ or www.comm-2000.com.
\3\ UL 399, Standard for Safety: DrinkingWater Coolers.--Supplement SB: Requirements for Drinking Water Coolers
  Employing a Flammable Refrigerant in the Refrigerating System, 7th edition, Dated August 22, 2008, including
  revisions through October 17, 2013.
\4\ UL 471, Standard for Safety: Commercial Refrigerators and Freezers--Supplement SB: Requirements for
  Refrigerators and Freezers Employing a Flammable Refrigerant in the Refrigerating System, 10th edition, Dated
  November 24, 2010.
\5\ UL 563, Standard for Safety: Ice Makers.--Supplement SA: Requirements for Ice Makers Employing a Flammable
  Refrigerant in the Refrigerating System, 8th edition, Dated July 31, 2009, including revisions through
  November 29, 2013.

                       Refrigerants--Substitutes Acceptable Subject to Narrowed Use Limits
----------------------------------------------------------------------------------------------------------------
            End-use                Substitutes        Decision       Narrowed use limits    Further information
----------------------------------------------------------------------------------------------------------------
Centrifugal chillers (new       HFC-134a........  Acceptable        Acceptable after       Users are required to
 only).                                            subject to        January 1, 2024,       document and retain
                                                   narrowed use      only in military       the results of their
                                                   limits.           marine vessels where   technical
                                                                     reasonable efforts     investigation of
                                                                     have been made to      alternatives for the
                                                                     ascertain that other   purpose of
                                                                     alternatives are not   demonstrating
                                                                     technically feasible   compliance.
                                                                     due to performance     Information should
                                                                     or safety              include descriptions
                                                                     requirements.          of:
                                                                                Application
                                                                                in which the
                                                                                substitute is
                                                                                needed;
                                                                                Substitutes
                                                                                examined and
                                                                                rejected;
                                                                                Reason for
                                                                                rejection of other
                                                                                alternatives, e.g.,
                                                                                performance,
                                                                                technical or safety
                                                                                standards; and/or
                                                                                Anticipated
                                                                                date other
                                                                                substitutes will be
                                                                                available and
                                                                                qualified and
                                                                                projected time for
                                                                                switching.
Centrifugal chillers (new       HFC-134a and R-   Acceptable        Acceptable after       Users are required to
 only).                          404A.             subject to        January 1, 2024,       document and retain
                                                   narrowed use      only in human-rated    the results of their
                                                   limits.           spacecraft and         technical
                                                                     related support        investigation of
                                                                     equipment where        alternatives for the
                                                                     reasonable efforts     purpose of
                                                                     have been made to      demonstrating
                                                                     ascertain that other   compliance.
                                                                     alternatives are not   Information should
                                                                     technically feasible   include descriptions
                                                                     due to performance     of:
                                                                     or safety              Application
                                                                     requirements.          in which the
                                                                                substitute is
                                                                                needed;
                                                                                Substitutes
                                                                                examined and
                                                                                rejected;
                                                                                Reason for
                                                                                rejection of other
                                                                                alternatives, e.g.,
                                                                                performance,
                                                                                technical or safety
                                                                                standards; and/or
                                                                                Anticipated
                                                                                date other
                                                                                substitutes will be
                                                                                available and
                                                                                qualified and
                                                                                projected time for
                                                                                switching.
Positive displacement chillers  HFC-134a........  Acceptable        Acceptable after       Users are required to
 (new only).                                       subject to        January 1, 2024,       document and retain
                                                   narrowed use      only in military       the results of their
                                                   limits.           marine vessels where   technical
                                                                     reasonable efforts     investigation of
                                                                     have been made to      alternatives for the
                                                                     ascertain that other   purpose of
                                                                     alternatives are not   demonstrating
                                                                     technically feasible   compliance.
                                                                     due to performance     Information should
                                                                     or safety              include descriptions
                                                                     requirements.          of:
                                                                                Application
                                                                                in which the
                                                                                substitute is
                                                                                needed;
                                                                                Substitutes
                                                                                examined and
                                                                                rejected;
                                                                                Reason for
                                                                                rejection of other
                                                                                alternatives, e.g.,
                                                                                performance,
                                                                                technical or safety
                                                                                standards; and/or
                                                                                Anticipated
                                                                                date other
                                                                                substitutes will be
                                                                                available and
                                                                                qualified and
                                                                                projected time for
                                                                                switching.
Positive displacement chillers  HFC-134a and R-   Acceptable        Acceptable after       Users are required to
 (new only).                     404A.             subject to        January 1, 2024,       document and retain
                                                   narrowed use      only in human-rated    the results of their
                                                   limits.           spacecraft and         technical
                                                                     related support        investigation of
                                                                     equipment where        alternatives for the
                                                                     reasonable efforts     purpose of
                                                                     have been made to      demonstrating
                                                                     ascertain that other   compliance.
                                                                     alternatives are not   Information should
                                                                     technically feasible   include descriptions
                                                                     due to performance     of:
                                                                     or safety              Application
                                                                     requirements.          in which the
                                                                                substitute is
                                                                                needed;
                                                                                Substitutes
                                                                                examined and
                                                                                rejected;
                                                                                Reason for
                                                                                rejection of other
                                                                                alternatives, e.g.,
                                                                                performance,
                                                                                technical or safety
                                                                                standards; and/or
                                                                                Anticipated
                                                                                date other
                                                                                substitutes will be
                                                                                available and
                                                                                qualified and
                                                                                projected time for
                                                                                switching.
----------------------------------------------------------------------------------------------------------------

                                     Refrigerants--Unacceptable Substitutes
----------------------------------------------------------------------------------------------------------------
               End-use                       Substitutes                Decision           Further information
----------------------------------------------------------------------------------------------------------------
Centrifugal chillers (new only)......  FOR12A, FOR12B, HFC-     Unacceptable as of       These refrigerants have
                                        134a, HFC-227ea, HFC-    January 1, 2024 except   GWPs ranging from
                                        236fa, HFC-245fa, R-     where allowed under a    approximately 900 to
                                        125/134a/600a (28.1/70/  narrowed use limit.      9,810. Other
                                        1.9), R-125/290/134a/                             alternatives will be
                                        600a (55.0/1.0/42.5/                              available for this end-
                                        1.5), R-404A, R-407C,                             use with lower overall
                                        R-410A, R-410B, R-                                risk to human health
                                        417A, R-421A, R-422B,                             and the environment by
                                        R-422C, R-422D, R-                                the status change
                                        423A, R-424A, R-434A,                             date.
                                        R-438A, R-507A, RS-44
                                        (2003 composition),
                                        and THR-03.
Centrifugal chillers (new only)......  Propylene (R-1270) and   Unacceptable as of       These refrigerants are
                                        R-443A.                  January 3, 2017.         highly photochemically
                                                                                reactive in the lower
                                                                                atmosphere and may
                                                                                deteriorate local air
                                                                                quality (that is, may
                                                                                increase ground level
                                                                                ozone). Other
                                                                                alternatives are
                                                                                available for this end-
                                                                                use with lower overall
                                                                                risk to human health
                                                                                and the environment.

Cold storage warehouses (new only)...  HFC-227ea, R-125/290/    Unacceptable as of       These refrigerants have
                                        134a/600a (55.0/1.0/     January 1, 2023.         GWPs ranging from
                                        42.5/1.5), R-404A, R-                             approximately 2,090 to
                                        407A, R-407B, R-410A,                             3,990. Other
                                        R-410B, R-417A, R-                                alternatives will be
                                        421A, R-421B, R-422A,                             available for this end-
                                        R-422B, R-422C, R-                                use with lower overall
                                        422D, R-423A, R-424A,                             risk to human health
                                        R-428A, R-434A, R-                                and the environment by
                                        438A, R-507A, and RS-                             the status change
                                        44 (2003 composition).                            date.
Cold storage warehouses (new only)...  Propylene (R-1270) and   Unacceptable as of       These refrigerants are
                                        R-443A.                  January 3, 2017.         highly photochemically
                                                                                reactive in the lower
                                                                                atmosphere and may
                                                                                deteriorate local air
                                                                                quality (that is, may
                                                                                increase ground level
                                                                                ozone). Other
                                                                                alternatives are
                                                                                available for this end-
                                                                                use with lower overall
                                                                                risk to human health
                                                                                and the environment.
Household refrigerators and freezers   FOR12A, FOR12B, HFC-     Unacceptable as of       These refrigerants have
 (new only).                            134a, KDD6, R-125/290/   January 1, 2021.         GWPs ranging from
                                        134a/600a (55.0/1.0/                              approximately 900 to
                                        42.5/1.5), R-404A, R-                             3,985. Other
                                        407C, R-407F, R-410A,                             alternatives will be
                                        R-410B, R-417A, R-                                available for this end-
                                        421A, R-421B, R-422A,                             use with lower overall
                                        R-422B, R-422C, R-                                risk to human health
                                        422D, R-424A, R-426A,                             and the environment by
                                        R-428A, R-434A, R-                                the status change
                                        437A, R-438A, R-507A,                             date.
                                        RS-24 (2002
                                        formulation), RS-44
                                        (2003 formulation),
                                        SP34E, and THR-03.
Positive displacement chillers (new    FOR12A, FOR12B, HFC-     Unacceptable as of       These refrigerants have
 only).                                 134a, HFC-227ea, KDD6,   January 1, 2024 except   GWPs ranging from
                                        R-125/134a/600a (28.1/   where allowed under a    approximately 900 to
                                        70/1.9), R-125/290/      narrowed use limit.      3,985. Other
                                        134a/600a (55.0/1.0/                              alternatives will be
                                        42.5/1.5), R-404A, R-                             available for this end-
                                        407C, R-410A, R-410B,                             use with lower overall
                                        R-417A, R-421A, R-                                risk to human health
                                        422B, R-422C, R-422D,                             and the environment by
                                        R-424A, R-434A, R-                                the status change
                                        437A, R-438A, R-507A,                             date.
                                        RS-44 (2003
                                        composition), SP34E,
                                        and THR-03.
Positive displacement chillers (new    Propylene (R-1270) and   Unacceptable as of       These refrigerants are
 only).                                 R-443A.                  January 3, 2017.         highly photochemically
                                                                                reactive in the lower
                                                                                atmosphere and may
                                                                                deteriorate local air
                                                                                quality (that is, may
                                                                                increase ground level
                                                                                ozone). Other
                                                                                alternatives are
                                                                                available for this end-
                                                                                use with lower overall
                                                                                risk to human health
                                                                                and the environment.
Residential and light commercial air   Propylene (R-1270) and   Unacceptable as of       These refrigerants are
 conditioning and heat pumps (new       R-443A.                  January 3, 2017.         highly photochemically
 only).                                                                                reactive in the lower
                                                                                atmosphere and may
                                                                                deteriorate local air
                                                                                quality (that is, may
                                                                                increase ground level
                                                                                ozone). Other
                                                                                alternatives are
                                                                                available for this end-
                                                                                use with lower overall
                                                                                risk to human health
                                                                                and the environment.
Residential and light commercial air   All refrigerants         Unacceptable as of       These refrigerants are
 conditioning--unitary split AC         identified as            January 3, 2017.         highly flammable and
 systems and heat pumps (retrofit       flammability Class 3                              present a flammability
 only).                                 in ANSI/ASHRAE                                    risk when used in
                                        Standard 34-2013 1 2 3.                           equipment designed for
                                       All refrigerants                                   nonflammable
                                        meeting the criteria                              refrigerants. Other
                                        for flammability Class                            alternatives are
                                        3 in ANSI/ASHRAE                                  available for this end-
                                        Standard 34-2013. This                            use with lower overall
                                        includes, but is not                              risk to human health
                                        limited to,                                       and the environment.
                                        refrigerant products
                                        sold under the names R-
                                        22a, 22a, Blue Sky 22a
                                        refrigerant, Coolant
                                        Express 22a, DURACOOL-
                                        22a, EC-22, Ecofreeez
                                        EF-22a, Envirosafe
                                        22a, ES-22a, Frost
                                        22a, HC-22a, Maxi-
                                        Fridge, MX-22a, Oz-
                                        Chill 22a, Priority
                                        Cool, and RED TEK 22a.
Retail food refrigeration              HFC-227ea, KDD6, R-125/  Unacceptable as of       These refrigerants have
 (refrigerated food processing and      290/134a/600a (55.0/     January 1, 2021.         GWPs ranging from
 dispensing equipment) (new only).      1.0/42.5/1.5), R-404A,                            approximately 1,770 to
                                        R-407A, R-407B, R-                                3,990. Other
                                        407C, R-407F, R-410A,                             alternatives will be
                                        R-410B, R-417A, R-                                available for this end-
                                        421A, R-421B, R-422A,                             use with lower overall
                                        R-422B, R-422C, R-                                risk to human health
                                        422D, R-424A, R-428A,                             and the environment by
                                        R-434A, R-437A, R-                                the status change
                                        438A, R-507A, RS-44                               date.
                                        (2003 formulation).
----------------------------------------------------------------------------------------------------------------
\1\ The Director of the Federal Register approves this incorporation by reference (5 U.S.C. 552(a) and 1 CFR
  part 51). You may inspect a copy at U.S. EPA's Air and Radiation Docket; EPA West Building, Room 3334, 1301
  Constitution Ave. NW., Washington, DC or at the National Archives and Records Administration (NARA). For
  questions regarding access to this standard, the telephone number of EPA's Air and Radiation Docket is 202-566-
  1742. For information on the availability of this material at NARA, call<PHONE_NUMBER>, or go to: http://www.archives.gov/federal_register/code_of_federal_regulations/ibr_locations.html.
\2\ You may obtain this material from: American Society of Heating, Refrigerating and Air-Conditioning Engineers
  (ASHRAE) 6300 Interfirst Drive, Ann Arbor, MI 48108; 1-800-527-4723 in the U.S. or Canada; http://www.techstreet.com/ashrae/ashrae_standards.html?ashrae_auth_token=.
\3\ ANSI/ASHRAE Standard 34-2013, Designation and Safety Classification of Refrigerants, 2013.

                   Foam Blowing Agents--Substitutes Acceptable Subject to Narrowed Use Limits
----------------------------------------------------------------------------------------------------------------
            End-use                Substitutes        Decision       Narrowed use limits    Further information
----------------------------------------------------------------------------------------------------------------
Rigid PU: Spray foam--high-     HFC-134a, HFC-    Acceptable        Acceptable from        Users are required to
 pressure two-component.         245fa, and        subject to        January 1, 2020,       document and retain
                                 blends thereof;   narrowed use      until January 1,       the results of their
                                 blends of HFC-    limits.           2025, only in          technical
                                 365mfc with at                      military or space-     investigation of
                                 least four                          and aeronautics-       alternatives for the
                                 percent HFC-                        related applications   purpose of
                                 245fa, and                          where reasonable       demonstrating
                                 commercial                          efforts have been      compliance.
                                 blends of HFC-                      made to ascertain      Information should
                                 365mfc with                         that other             include descriptions
                                 seven to 13                         alternatives are not   of:
                                 percent HFC-                        technically feasible   Process or
                                 227ea and the                       due to performance     product in which the
                                 remainder HFC-                      or safety              substitute is
                                 365mfc; and                         requirements.          needed;
                                 Formacel TI.                       Closed cell foam        Substitutes
                                                                     products and           examined and
                                                                     products containing    rejected;
                                                                     closed cell foams      Reason for
                                                                     manufactured with      rejection of other
                                                                     these substitutes on   alternatives, e.g.,
                                                                     or before January 1,   performance,
                                                                     2025, may be used      technical or safety
                                                                     after that date.       standards; and/or
                                                                                Anticipated
                                                                                date other
                                                                                substitutes will be
                                                                                available and
                                                                                projected time for
                                                                                switching.
Rigid PU: Spray foam--low-      HFC-134a, HFC-    Acceptable        Acceptable from        Users are required to
 pressure two-component.         245fa, and        subject to        January 1, 2021,       document and retain
                                 blends thereof;   narrowed use      until January 1,       the results of their
                                 blends of HFC-    limits.           2025, only in          technical
                                 365mfc with at                      military or space-     investigation of
                                 least four                          and aeronautics-       alternatives for the
                                 percent HFC-                        related applications   purpose of
                                 245fa, and                          where reasonable       demonstrating
                                 commercial                          efforts have been      compliance.
                                 blends of HFC-                      made to ascertain      Information should
                                 365mfc with                         that other             include descriptions
                                 seven to 13                         alternatives are not   of:
                                 percent HFC-                        technically feasible   Process or
                                 227ea and the                       due to performance     product in which the
                                 remainder HFC-                      or safety              substitute is
                                 365mfc; and                         requirements.          needed;
                                 Formacel TI.                       Low pressure two-       Substitutes
                                                                     component spray foam   examined and
                                                                     kits manufactured      rejected;
                                                                     with these             Reason for
                                                                     substitutes on or      rejection of other
                                                                     before January 1,      alternatives, e.g.,
                                                                     2025, for military     performance,
                                                                     or space- and          technical or safety
                                                                     aeronautics-related    standards; and/or
                                                                     applications may be    Anticipated
                                                                     used after that date.  date other
                                                                                substitutes will be
                                                                                available and
                                                                                projected time for
                                                                                switching.
----------------------------------------------------------------------------------------------------------------

                                  Foam Blowing Agents--Unacceptable Substitutes
----------------------------------------------------------------------------------------------------------------
               End-use                       Substitutes                Decision           Further information
----------------------------------------------------------------------------------------------------------------
Flexible PU..........................  Methylene chloride.....  Unacceptable as of       Methylene chloride is a
                                                                 January 3, 2017.         carcinogen and may
                                                                                present a toxicity
                                                                                risk. Other
                                                                                alternatives are
                                                                                available for this end-
                                                                                use with lower overall
                                                                                risk to human health
                                                                                and the environment.
Rigid PU: Spray foam--one component    HFC-134a, HFC-245fa,     Unacceptable as of       These foam blowing
 foam sealants.                         and blends thereof;      January 1, 2020.         agents have GWPs
                                        blends of HFC-365mfc    One-component foam        ranging from higher
                                        with at least four       sealant cans             than 730 to
                                        percent HFC-245fa, and   manufactured with        approximately 1,500.
                                        commercial blends of     these substitutes on     Other alternatives
                                        HFC-365mfc with seven    or before January 1,     will be available for
                                        to 13 percent HFC-       2020, may be used        this end-use with
                                        227ea and the            after that date.         lower overall risk to
                                        remainder HFC-365mfc;                             human health and the
                                        and Formacel TI.                                  environment by the
                                                                                status change date.
Rigid PU: Spray foam--high-pressure    HFC-134a, HFC-245fa,     Unacceptable as of       These foam blowing
 two-component.                         and blends thereof;      January 1, 2020,         agents have GWPs
                                        blends of HFC-365mfc     except where allowed     ranging from higher
                                        with at least four       under a narrowed use     than 730 to
                                        percent HFC-245fa, and   limit. Closed cell       approximately 1,500.
                                        commercial blends of     foam products and        Other alternatives
                                        HFC-365mfc with seven    products containing      will be available for
                                        to 13 percent HFC-       closed cell foams        this end-use with
                                        227ea and the            manufactured with        lower overall risk to
                                        remainder HFC-365mfc;    these substitutes on     human health and the
                                        and Formacel TI.         or before January 1,     environment by the
                                                                 2020, may be used        status change date.
                                                                 after that date.
Rigid PU: Spray foam--low-pressure     HFC-134a, HFC-245fa,     Unacceptable as of       These foam blowing
 two-component.                         and blends thereof;      January 1, 2021,         agents have GWPs
                                        blends of HFC-365mfc     except where allowed     ranging from higher
                                        with at least four       under a narrowed use     than 730 to
                                        percent HFC-245fa, and   limit.                   approximately 1,500.
                                        commercial blends of    Low pressure two-         Other alternatives
                                        HFC-365mfc with seven    component spray foam     will be available for
                                        to 13 percent HFC-       kits manufactured with   this end-use with
                                        227ea and the            these substitutes on     lower overall risk to
                                        remainder HFC-365mfc;    or before January 1,     human health and the
                                        and Formacel TI.         2025, may be used        environment by the
                                                                 after that date.         status change date.
----------------------------------------------------------------------------------------------------------------

                                 Fire Suppression and Explosion Protection Agents--Acceptable Subject to Use Conditions
--------------------------------------------------------------------------------------------------------------------------------------------------------
               End-use                       Substitute                Decision              Use conditions                Further information
--------------------------------------------------------------------------------------------------------------------------------------------------------
Streaming...........................  2-BTP..................  Acceptable, subject to   As of January 3, 2017,   This fire suppressant has a relatively
                                                                use conditions.          acceptable only for      low GWP of 0.23-0.26 and a short
                                                                                use in handheld          atmospheric lifetime of approximately
                                                                                extinguishers in         seven days.
                                                                                aircraft.               This agent is subject to requirements
                                                                                contained in a Toxic Substance Control
                                                                                Act (TSCA) section 5(e) Consent Order
                                                                                and any subsequent TSCA section
                                                                                5(a)(2) Significant New Use Rule
                                                                                (SNUR).
                                                                                For establishments manufacturing,
                                                                                installing and maintaining handheld
                                                                                extinguishers using this agent:
                                                                                (1) Use of this agent should be used in
                                                                                accordance with the latest edition of
                                                                                NFPA Standard 10 for Portable Fire
                                                                                Extinguishers;
                                                                                (2) In the case that 2-BTP is inhaled,
                                                                                person(s) should be immediately
                                                                                removed and exposed to fresh air; if
                                                                                breathing is difficult, person(s)
                                                                                should seek medical attention;
                                                                                (3) Eye wash and quick drench
                                                                                facilities should be available. In
                                                                                case of ocular exposure, person(s)
                                                                                should immediately flush the eyes,
                                                                                including under the eyelids, with
                                                                                fresh water and move to a non-
                                                                                contaminated area;
                                                                                (4) Exposed person(s) should remove all
                                                                                contaminated clothing and footwear to
                                                                                avoid irritation, and medical
                                                                                attention should be sought if
                                                                                irritation develops or persists;
                                                                                (5) Although unlikely, in case of
                                                                                ingestion of 2-BTP, the person(s)
                                                                                should consult a physician
                                                                                immediately;
                                                                                (6) Manufacturing space should be
                                                                                equipped with specialized engineering
                                                                                controls and well ventilated with a
                                                                                local exhaust system and low-lying
                                                                                source ventilation to effectively
                                                                                mitigate potential occupational
                                                                                exposure; regular testing and
                                                                                monitoring of the workplace atmosphere
                                                                                should be conducted;
                                                                                (7) Employees responsible for chemical
                                                                                processing should wear the appropriate
                                                                                PPE, such as protective gloves,
                                                                                tightly sealed goggles, protective
                                                                                work clothing, and suitable
                                                                                respiratory protection in case of
                                                                                accidental release or insufficient
                                                                                ventilation;
                                                                                (8) All spills should be cleaned up
                                                                                immediately in accordance with good
                                                                                industrial hygiene practices; and
                                                                                (9) Training for safe handling
                                                                                procedures should be provided to all
                                                                                employees that would be likely to
                                                                                handle containers of the agent or
                                                                                extinguishing units filled with the
                                                                                agent.
Total flooding......................  2-BTP..................  Acceptable, subject to   As of January 3, 2017,   This fire suppressant has a relatively
                                                                use conditions.          acceptable only for      low GWP of 0.23-0.26 and a short
                                                                                use in engine nacelles   atmospheric lifetime of approximately
                                                                                and auxiliary power      seven days.
                                                                                units on aircraft.      This agent is subject to requirements
                                                                                contained in a TSCA section 5(e)
                                                                                Consent Order and any subsequent TSCA
                                                                                section 5(a)(2) SNUR.
                                                                                For establishments manufacturing,
                                                                                installing, and servicing engine
                                                                                nacelles and auxiliary power units on
                                                                                aircraft using this agent:
                                                                                (1) This agent should be used in
                                                                                accordance with the safety guidelines
                                                                                in the latest edition of the National
                                                                                Fire Protection Association (NFPA)
                                                                                2001 Standard for Clean Agent Fire
                                                                                Extinguishing Systems;
                                                                                (2) In the case that 2-BTP is inhaled,
                                                                                person(s) should be immediately
                                                                                removed and exposed to fresh air; if
                                                                                breathing is difficult, person(s)
                                                                                should seek medical attention;
                                                                                (3) Eye wash and quick drench
                                                                                facilities should be available. In
                                                                                case of ocular exposure, person(s)
                                                                                should immediately flush the eyes,
                                                                                including under the eyelids, with
                                                                                fresh water and move to a non-
                                                                                contaminated area.
                                                                                (4) Exposed person(s) should remove all
                                                                                contaminated clothing and footwear to
                                                                                avoid irritation, and medical
                                                                                attention should be sought if
                                                                                irritation develops or persists;
                                                                                (5) Although unlikely, in case of
                                                                                ingestion of 2-BTP, the person(s)
                                                                                should consult a physician
                                                                                immediately;
                                                                                (6) Manufacturing space should be
                                                                                equipped with specialized engineering
                                                                                controls and well ventilated with a
                                                                                local exhaust system and low-lying
                                                                                source ventilation to effectively
                                                                                mitigate potential occupational
                                                                                exposure; regular testing and
                                                                                monitoring of the workplace atmosphere
                                                                                should be conducted;
                                                                                (7) Employees responsible for chemical
                                                                                processing should wear the appropriate
                                                                                PPE, such as protective gloves,
                                                                                tightly sealed goggles, protective
                                                                                work clothing, and suitable
                                                                                respiratory protection in case of
                                                                                accidental release or insufficient
                                                                                ventilation;
                                                                                (8) All spills should be cleaned up
                                                                                immediately in accordance with good
                                                                                industrial hygiene practices;
                                                                                (9) Training for safe handling
                                                                                procedures should be provided to all
                                                                                employees that would be likely to
                                                                                handle containers of the agent or
                                                                                extinguishing units filled with the
                                                                                agent;
                                                                                (10) Safety features that are typical
                                                                                of total flooding systems such as pre-
                                                                                discharge alarms, time delays, and
                                                                                system abort switches should be
                                                                                provided, as directed by applicable
                                                                                OSHA regulations and NFPA standards;
                                                                                use of this agent should also conform
                                                                                to relevant OSHA requirements,