Page 66 - 2018_IFC

DEFINITIONS

KEY BOX. A secure device with a lock operable only by a ucts or services that maintains periodic inspection of produc-
fire department master key, and containing building entry tion of listed equipment or materials or periodic evaluation of
keys and other keys that may be required for access in an services and whose listing states either that the equipment,
emergency. material, product or service meets identified standards or has
been tested and found suitable for a specified purpose.
[A] LABELED. Equipment, materials or products to which
have been affixed a label, seal, symbol or other identifying LOCKDOWN. An emergency situation, in other than a
mark of a nationally recognized testing laboratory, approved Group I-3 occupancy, requiring that the occupants be shel-
agency or other organization concerned with product evalua- tered and secured in place within a building when normal
tion that maintains periodic inspection of the production of evacuation would put occupants at risk.
such labeled items and whose labeling indicates either that [BG] LODGING HOUSE. A one-family dwelling where
the equipment, material or product meets identified standards one or more occupants are primarily permanent in nature and
or has been tested and found suitable for a specified purpose.
rent is paid for guestrooms.
LABORATORY SUITE. A fire-rated enclosed laboratory LONGITUDINAL FLUE SPACE. See “Flue space—longi-
area that will provide one or more laboratory spaces, within a tudinal.”
Group B educational occupancy, that are permitted to include
ancillary uses such as offices, bathrooms and corridors that [A] LOT. A portion or parcel of land considered as a unit.
are contiguous with the laboratory area, and are constructed [A] LOT LINE. A line dividing one lot from another, or
in accordance with Chapter 38. from a street or any public place.
LEVEL OF EXIT DISCHARGE. See “Exit discharge, [BE] LOW ENERGY POWER-OPERATED DOOR.
level of.” Swinging, sliding or folding door which opens automatically
LIMITED SPRAYING SPACE. An area in which opera- upon an action by a pedestrian such as pressing a push plate or
tions for touch-up or spot painting of a surface area of 9 waving a hand in front of a sensor. The door closes automati-
2
square feet (0.84 m ) or less are conducted. cally, and operates with decreased forces and decreased
speeds. See also “Power-assisted door” and “Power-operated
LIQUEFIED NATURAL GAS (LNG). A fluid in the liquid door.”
state composed predominantly of methane and which may
contain minor quantities of ethane, propane, nitrogen or other LOWER EXPLOSIVE LIMIT (LEL). See “Lower flam-
components normally found in natural gas. mable limit.”
LIQUEFIED PETROLEUM GAS (LP-gas). A material LOWER FLAMMABLE LIMIT (LFL). The minimum
which is composed predominantly of the following hydrocar- concentration of vapor in air at which propagation of flame
bons or mixtures of them: propane, propylene, butane (nor- will occur in the presence of an ignition source. The LFL is
mal butane or isobutane) and butylenes. sometimes referred to as LEL or lower explosive limit.
LIQUID. A material having a melting point that is equal to LOW-PRESSURE TANK. A storage tank designed to with-
or less than 68°F (20°C) and a boiling point which is greater stand an internal pressure greater than 0.5 pound per square
than 68°F (20°C) at 14.7 pounds per square inch absolute inch gauge (psig) (3.4 kPa) but not greater than 15 psig
(psia) (101 kPa). Where not otherwise identified, the term (103.4 kPa).
“liquid” includes both flammable and combustible liquids. LP-GAS CONTAINER. Any vessel, including cylinders,
LIQUID OXYGEN AMBULATORY CONTAINER. A tanks, portable tanks and cargo tanks, used for transporting or
container used for liquid oxygen not exceeding 0.396 gallons storing LP-gases.
(1.5 liters) specifically designed for use as a medical device MAGAZINE. A building, structure or container, other than
as defined by 21 USC Chapter 9 that is intended for portable an operating building, approved for storage of explosive
therapeutic use and to be filled from its companion base unit, materials.
a liquid oxygen home care container.
Indoor. A portable structure, such as a box, bin or other
LIQUID OXYGEN HOME CARE CONTAINER. A con- container, constructed as required for Type 2, 4 or 5 maga-
tainer used for liquid oxygen not exceeding 15.8 gallons (60 zines in accordance with NFPA 495, NFPA 1124 or DOTy
liters) specifically designed for use as a medical device as 27 CFR Part 55 so as to be fire resistant and theft resistant.
defined by 21 USC Chapter 9 that is intended to deliver gas- Type 1. A permanent structure, such as a building or
eous oxygen for therapeutic use in a home environment.
igloo, that is bullet resistant, fire resistant, theft resistant,
LIQUID STORAGE ROOM. A room classified as a Group weather resistant and ventilated in accordance with the
H-3 occupancy used for the storage of flammable or combus- requirements of NFPA 495, NFPA 1124 or DOTy 27 CFR
tible liquids in a closed condition. Part 55.
LIQUID STORAGE WAREHOUSE. A building classified Type 2. A portable or mobile structure, such as a box,
as a Group H-2 or H-3 occupancy used for the storage of skid-magazine, trailer or semitrailer, constructed in accor-
flammable or combustible liquids in a closed condition. dance with the requirements of NFPA 495, NFPA 1124 or
[A] LISTED. Equipment, materials, products or services DOTy 27 CFR Part 55 that is fire resistant, theft resistant,
included in a list published by an organization acceptable to weather resistant and ventilated. If used outdoors, a Type 2
the fire code official and concerned with evaluation of prod- magazine is also bullet resistant.

2018 INTERNATIONAL FIRE CODE ® 33
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