Page 54 - 2018_IFC

DEFINITIONS

CARBON DIOXIDE ENRICHMENT SYSTEM. A sys- Chemical Abstracts Service rules of nomenclature, or a name
tem where carbon dioxide gas is intentionally introduced into which will clearly identify a chemical for the purpose of con-
an indoor environment, typically for the purpose of stimulat- ducting an evaluation.
ing plant growth. [M] CHIMNEY. A primarily vertical structure containing
CARBON DIOXIDE EXTINGUISHING SYSTEM. A one or more flues for the purpose of carrying gaseous prod-
system supplying carbon dioxide (CO ) from a pressurized ucts of combustion and air from a fuel-burning appliance to
2
vessel through fixed pipes and nozzles. The system includes a the outdoor atmosphere.
manual- or automatic-actuating mechanism. Factory-built chimney. A listed and labeled chimney
CARBON MONOXIDE ALARM. A single- or multiple- composed of factory-made components, assembled in the
station alarm intended to detect carbon monoxide gas and field in accordance with manufacturer’s instructions and
alert occupants by a distinct audible signal. It incorporates a the conditions of the listing.
sensor, control components and an alarm notification appli- Masonry chimney. A field-constructed chimney com-
ance in a single unit. posed of solid masonry units, bricks, stones, or concrete.
CARBON MONOXIDE DETECTOR. A device with an Metal chimney. A field-constructed chimney of metal.
integral sensor to detect carbon monoxide gas and transmit an CLEAN AGENT. Electrically nonconducting, volatile or
alarm signal to a connected alarm control unit. gaseous fire extinguishant that does not leave a residue upon
[BG] CARE SUITE. In Group I-2 occupancies, a group of evaporation.
treatment rooms, care recipient sleeping rooms and the sup- [BG] CLINIC, OUTPATIENT. Buildings or portions
port rooms or spaces and circulation space within the suite thereof used to provide medical care on a less-than-24-hour
where staff are in attendance for supervision of all care recip- basis to persons who are not rendered incapable of self-pres-
ients within the suite, and the suite is in compliance with the ervation by the services provided.
requirements of Section 407.4.4 of the International Building CLOSED CONTAINER. A container sealed by means of a
Code.
lid or other device such that liquid, vapor or dusts will not
CARTON. A cardboard or fiberboard box enclosing a prod- escape from it under ordinary conditions of use or handling.
uct.
CLOSED SYSTEM. The use of a solid or liquid hazardous
CEILING LIMIT. The maximum concentration of an air- material involving a closed vessel or system that remains
borne contaminant to which one may be exposed. The ceiling closed during normal operations where vapors emitted by the
limits utilized are those published in DOL 29 CFR Part product are not liberated outside of the vessel or system and
1910.1000. The ceiling Recommended Exposure Limit the product is not exposed to the atmosphere during normal
(REL-C) concentrations published by the U.S. National Insti- operations; and all uses of compressed gases. Examples of
tute for Occupational Safety and Health (NIOSH), Threshold closed systems for solids and liquids include product con-
Limit Value-Ceiling (TLV-C) concentrations published by veyed through a piping system into a closed vessel, system or
the American Conference of Governmental Industrial piece of equipment.
Hygienists (ACGIH), Ceiling Workplace Environmental COLD DECK. A pile of unfinished cut logs.
Exposure Level (WEEL-Ceiling) Guides published by the
American Industrial Hygiene Association (AIHA), and other COMBUSTIBLE DUST. Finely divided solid material
approved, consistent measures are allowed as surrogates for which is 420 microns or less in diameter and which, when
hazardous substances not listed in DOL 29 CFR Part dispersed in air in the proper proportions, could be ignited by
1910.1000. a flame, spark or other source of ignition. Combustible dust
will pass through a U.S. No. 40 standard sieve.
[A] CHANGE OF OCCUPANCY. A change in the use of a
building or a portion of a building that results in any of the COMBUSTIBLE FIBERS. Readily ignitable and free-burn-
following: ing materials in a fibrous or shredded form, such as cocoa
fiber, cloth, cotton, excelsior, hay, hemp, henequen, istle,
1. A change of occupancy classification. jute, kapok, oakum, rags, sisal, Spanish moss, straw, tow,
2. A change from one group to another group within an wastepaper, certain synthetic fibers or other like materials.
occupancy classification. This definition does not include densely packed baled cotton.
3. Any change in use within a group for which there is a COMBUSTIBLE GAS DETECTOR. An instrument that
change in the application of the requirements of this samples the local atmosphere and indicates the presence of
code. ignitable vapors or gases within the flammable or explosive
CHEMICAL. An element, chemical compound or mixture range expressed as a volume percent in air.
of elements or compounds or both. COMBUSTIBLE LIQUID. A liquid having a closed cup
CHEMICAL FUME HOOD. A ventilated enclosure flash point at or above 100°F (38°C). Combustible liquids
designed to contain and exhaust fumes, gases, vapors, mists shall be subdivided as follows:
and particulate matter generated within the hood. Class II. Liquids having a closed cup flash point at or
CHEMICAL NAME. The scientific designation of a chemi- above 100°F (38°C) and below 140°F (60°C).
cal in accordance with the nomenclature system developed by Class IIIA. Liquids having a closed cup flash point at or
the International Union of Pure and Applied Chemistry, the above 140°F (60°C) and below 200°F (93°C).

2018 INTERNATIONAL FIRE CODE ® 21
Copyrighted © 2017 by, or licensed to, ICC (ALL RIGHTS RESERVED); licensed to UL, LLC pursuant to License Agreement with ICC. No further reproductions authorized or distribution authorized.
ANY UNAUTHROIZED REPRODUCTION OR DISTRIBUTION IS A VIOLATION OF THE FEDERAL COPYRIGHT ACT AND THE LICENSE AGREEMENT; AND SUBJECT TO CIVIL AND CRIMINAL PENALTIES THEREUNDER.